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  • Aquaculture  (3,517)
  • India  (724)
  • 2020-2022  (4,058)
  • 1
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    Increase in Population Exposure Due to Dry and Wet Extremes in India Under a Warming Climate (2021)
    Details
    Publication Date: 2021-06-30
    Description: Dry and wet extremes affect agricultural production, infrastructure, and socioeconomic well‐being of about 1.4 billion people in India. Despite the profound implications of dry and wet extremes, their changes in the observed and projected climate in India are not well quantified. Here, using the observations from multiple sources, we show that the area affected by dry extremes during the monsoon season (June–September) and water‐year (June–May) has significantly increased (~1% per decade; p value 〈 0.05) over the last six decades (1951–2015) in India. On the other hand, the area affected by wet extremes does not exhibit any significant trend over the same time period. Dry and wet extremes in the monsoon season are corroborated with the positive phase and negative phase of the sea surface temperature (SST) anomalies in the tropical Pacific Ocean (Niño 3.4 region). Global climate models (GCMs) project an increase of more than 25–30% (±3–6%) in the combined area affected by the dry and wet extremes in India by the end of the 21st century. The frequency of both dry and wet extreme years is also projected to increase in the majority of India (〉80%) under a warmer world if the global mean temperature rises above 1.5°C (or 2°C) from a preindustrial level. Moreover, the population exposed to the dry and wet extremes is likely to increase threefold under the projected 2°C warmer world. Therefore, limiting global mean temperature rise below 2°C can substantially reduce the area and population exposure due to dry and wet extremes in India.
    Description: Key Points: The area affected by dry extremes has significantly increased (~1% per decade) during 1951–2015 in India Climate models project increase in the combined area affected by the dry and wet extremes in India (25–30%) by the end of the 21st century The population exposed to the dry and wet extremes is likely to increase threefold under a (2°C) warmer world climate
    Description: Ministry of Earth Sciences (MoES) http://dx.doi.org/10.13039/501100001851
    Keywords: 551.6 ; dry extremes ; wet extremes ; CMIP5 ; population exposure ; SPEI ; India
    Type: article
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  • 2
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    Ex-ante impact evaluation: case studies from Malawi, Bangladesh and Ghana (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/10990 | 115 | 2013-03-18 12:53:47 | 10990 | WorldFish Center
    Details
    Publication Date: 2021-06-25
    Description: This document presents ex-ante impact evaluations of research for development projects related to aquaculture in Bangladesh, Malawi and Ghana. The Ghana chapter also includes an ex-ante evaluation of a fisheries project. The case studies utilized preliminary versions of guidelines developed specifically for ex-ante evaluations of aquaculture and fisheries projects. The guidelines, found in A Practical Guide for Ex-Ante Impact Evaluations in Fisheries and Aquaculture, are designed to provide an approach for a qualitative examination of the potential for a project to deliver impacts. Using a conceptual framework based on the outcome focus of results-based management, the guidelines stress careful examination of the setting, internal consistency, a sound theory of change, and an examination of stakeholders’ interests and potential partnerships. The case study reports illustrate the variability with which the guidelines may be interpreted and applied. The different teams, operating with limited time and budget that constrained the collection of new data, were forced to utilize existing secondary data and information and consult with key stakeholders to complete their analyses. The varying levels of reporting reflect the differences among the cases in the amounts of existing information and variety of stakeholders potentially involved in the projects being examined.
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Keywords: Aquaculture ; Aquaculture ; Impact assessment ; Malawi ; Bangladesh ; Ghana
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 38
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  • 3
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    SAMUDRA Report No. 60, November 2011 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  http://aquaticcommons.org/id/eprint/11174 | 25 | 2013-06-02 15:32:33 | 11174 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-28
    Description: Contents: ITQs in New Zealand.Finfish Farming in Atlantic Canada.Sustainable Small-scale Fisheries.Salmon Aquaculture in Chile.South Africa’s Fisheries Policy.Voluntary Guidelines for SSF
    Description: ISSN 0973-1121
    Keywords: Aquaculture ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
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  • 4
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    SAMUDRA Report No. 59, July 2011 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  http://aquaticcommons.org/id/eprint/11173 | 25 | 2013-06-02 15:46:04 | 11173 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-28
    Description: Contents: Catch Shares in Fisheries.South Africa’s Small-scale Fishing Policy.WFFP General Assembly.Ecolabels and Sustainable Seafood in the UK.MPAs in Costa Rica.Indigenous Fishing Rights in Chile
    Description: ISSN 0973-1121
    Keywords: Aquaculture ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    Yemaya, No. 41, November 2012 (2021)
    International Collective in Support of Fishworkers (ICSF) | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11184 | 25 | 2015-09-24 08:22:47 | 11184 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: ISSN 0973-1156
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
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  • 6
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    Yemaya, No. 42, March 2013 (2021)
    International Collective in Support of Fishworkers (ICSF) | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11185 | 25 | 2015-09-24 08:21:49 | 11185 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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  • 7
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    Yemaya, No. 37, July 2011 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11180 | 25 | 2015-09-24 08:24:52 | 11180 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: ISSN 0973-1156
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
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  • 8
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    Yemaya, No. 40, July 2012 (2021)
    International Collective in Support of Fishworkers (ICSF) | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11183 | 25 | 2015-09-24 08:23:16 | 11183 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 12
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  • 9
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    Yemaya, No. 39, March 2012 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11182 | 25 | 2015-09-24 08:23:48 | 11182 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: ISSN 0973-1156
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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  • 10
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    Uganda aquaculture value chains: strategic planning mission report (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/11218 | 115 | 2013-06-14 14:13:17 | 11218 | WorldFish Center
    Details
    Publication Date: 2021-06-29
    Description: This report presents the findings and recommendations of a strategic planning mission to reevaluate the feasibility of WorldFish implementing a fish value chain research program in Uganda under the CGIAR Research Program on Livestock and Fish (L&F). The over-arching goal of L&F is to increase productivity of small-scale livestock and fish systems so as to increase availability and affordability of meat, milk and fish for poor consumers and, in doing so, to reduce poverty through greater participation by the poor along animal source food value chains. This will be achieved by making a small number of carefully selected animal source food value chains function better, for example by identifying and addressing key constraints and opportunities (from production to consumption), improving institutional arrangements and capacities, and supporting the establishment of enabling pro-poor policy and institutional environments.
    Description: CGIAR Research Program 3.7 Livestock & Fish
    Keywords: Aquaculture ; Aquaculture ; Uganda
    Repository Name: AquaDocs
    Type: monograph
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  • 11
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    Solomon Islands: Essential aspects of governance for Aquatic Agricultural Systems in Malaita Hub (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/11256 | 115 | 2013-07-23 09:58:18 | 11256 | WorldFish Center
    Details
    Publication Date: 2021-06-30
    Description: In late 2012, a governance assessment was carried out as part of the diagnosis phase of rollout of the CGIAR Aquatic Agricultural Systems Program in Malaita Hub in Solomon Islands. The purpose of the assessment was to identify and provide a basic understanding of essential aspects of governance related to Aquatic Agricultural Systems in general, and more specifically as a case study in natural resource management. The underlying principles of the approach we have taken are drawn from an approach known as “Collaborating for Resilience” (CORE), which is based on bringing all key stakeholders into a process to ensure that multiple perspectives are represented (a listening phase), that local actors have opportunities to influence each other’s understanding (a dialogue phase), and that ultimately commitments to action are built (a choice phase) that would not be possible through an outsider’s analysis alone. This report begins to address governance from an AAS perspective, using input from AAS households and other networked stakeholders. We attempt to summarize governance issues that are found not only within the community but also, and especially, those that are beyond the local level, both of which may need to be addressed by the AAS program.
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Keywords: Agriculture ; Aquaculture ; Aquatic Agricultural Systems ; Governance
    Repository Name: AquaDocs
    Type: monograph
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    Format: 17
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  • 12
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    Ovarian growth and ovulation in the mature blue crab, Callinectes sapidus Rathbun (2021)
    Chesapeake Biological Laboratory | Solomons Island, MD
    In:  http://aquaticcommons.org/id/eprint/12399 | 130 | 2014-02-08 01:07:00 | 12399 | University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory
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    Publication Date: 2021-06-30
    Description: Introduction.Observations: structure of the ovary during the periods of growth and ovulation in the mature crab (stages 1-5).Discussion and conclusions.
    Keywords: Aquaculture ; Biology ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
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  • 13
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    Fütterungsversuche an Regenbogenforellen (2021)
    In:  SF@ti.bund.de | http://aquaticcommons.org/id/eprint/12411 | 1240 | 2014-03-03 19:49:17 | 12411 | Johann Heinrich von Thünen-Institut, Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei
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    Publication Date: 2021-06-30
    Description: “Institut für Küsten- und Binnenfischerei” was an independent Institute. Later, it was transferred to the „Institut für Seefischerei“.
    Keywords: Fisheries ; feeding experiments ; Aquaculture ; Salmo gairdnerii ; Rainbow Trout ; penicillin residues ; fish feeding ; Vitamin T ; growth
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
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  • 14
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    The food habits of hatchery-produced pond-cultured shad (Alosa sapidissima) reared to a length of two inches (2021)
    Chesapeake Biological Laboratory | Solomons Island, MD
    In:  http://aquaticcommons.org/id/eprint/12428 | 130 | 2014-02-08 03:58:43 | 12428 | University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory
    Details
    Publication Date: 2021-06-30
    Description: The present study was aimed at determining the food habits of hatchery-produced, pond-cultured shad (Alosa sapidissima) reared to a total length of approximately two inches. More specifically, the objectives were to determine: (1) That point in life at which young shad start to consume food; (2) What type or types of food the young shad consume at the onset of feeding; (3) Food changes, if any, which occur with age and growth in size up to the arbitrarily designated total length of two inches. The plan was that the shad larvae be introduced into an outdoor rearing pond previously fertilized, and that the larvae be dependent upon the plankton for food as they would be under natural conditions.
    Keywords: Aquaculture ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
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  • 15
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    Assessment of the carp seeds value chain in southern Bangladesh (final draft) (2021)
    WorldFish | Dhaka, Bangladesh
    In:  http://aquaticcommons.org/id/eprint/12702 | 115 | 2013-12-04 08:17:43 | 12702 | WorldFish Center
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    Publication Date: 2021-07-04
    Description: The Aquaculture for Income and Nutrition (AIN) project implemented by World Fish and funded by USAID, aims at increasing aquaculture production in 20 districts of Southern Bangladesh (Greater Khulna, Greater Barisal, Greater Jessore and Greater Faridpur) to reduce poverty and enhance nutritional status. As part of its initial scoping activities World Fish commissioned this value chain assessment on the market chains of carp fish seed (spawn, fry and fingerlings) in the southern region of Bangladesh. The purpose of this study is to obtain a clearer understanding of the volumes of fish produced and consumed in Southern Bangladesh and their origin (by system and location), their destination (by type of market, type of consumer and location), and to gain a clearer understanding of potential market based solutions to farmer’s problems, which the project could implement.
    Description: CGIAR Research Program Livestock and Fish
    Keywords: Aquaculture ; Aquaculture ; Nutrition ; Value chain ; Marketing ; Fishery product
    Repository Name: AquaDocs
    Type: monograph
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  • 16
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    Feed the future aquaculture project: annual report October 2011-Sept 2012 (2021)
    WorldFish | Dhaka, Bangladesh
    In:  http://aquaticcommons.org/id/eprint/12700 | 115 | 2013-12-04 08:13:26 | 12700 | WorldFish Center
    Details
    Publication Date: 2021-07-04
    Description: The Feed the Future Aquaculture project is a five year transformative investment in aquaculture focused on 20 southern districts in Barisal, Khulna and Dhaka divisions, Bangladesh. This report describes the achievements of FtF-Aquaculture project activities implemented during FY12. Some of the targets for production and associated income have not been achieved yet as a large share of the fish will be harvested after closing of the reporting period. However, on the basis of growth monitoring, indications are that production is on track to achieve the targets.
    Description: CGIAR Research Program Livestock and Fish
    Keywords: Aquaculture ; Aquaculture ; Research ; Food security ; Livelihoods
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 72
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  • 17
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    Value chain analysis: shrimp, prawn and tilapia from the southern region of Bangladesh & feasibility analysis: brackish water sea-bass in the southern region in Bangladesh (2021)
    WorldFish | Dhaka, Bangladesh
    In:  http://aquaticcommons.org/id/eprint/12703 | 115 | 2013-12-03 12:57:19 | 12703 | WorldFish Center
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    Publication Date: 2021-07-04
    Description: The WorldFish Center is implementing the FtF Aquaculture Project in 20 southern districts in Bangladesh. The project is implemented under USAID’s Feed the Future initiative in collaboration with the Government of Bangladesh. The project contributes to achieving the ‘Feed the Future’ goals through four objectives: (i) dissemination of improved quality fish and shrimp seed, (ii) improving the nutrition and income status of farm households, (iii) increasing investment, employment and fish production through commercial aquaculture and (iv) policy and regulatory reform and institutional capacity building to support sustainable aquaculture growth. The project commissioned this study to gather insights into the value chains of shrimp, prawn and tilapia in the project region and the feasibility of promoting culture of brackish water sea-bass in the region. The findings and recommendations are expected to provide the foundation for the project to design its interventions for achieving its goals.
    Description: CGIAR Research Program Livestock and Fish
    Keywords: Aquaculture ; Aquaculture ; Seed (aquaculture) ; Policies ; Shrimp culture
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 82
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  • 18
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    2012 Annual report (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/12704 | 115 | 2013-12-03 13:03:36 | 12704 | WorldFish Center
    Details
    Publication Date: 2021-07-04
    Description: The CGIAR Research Program on Aquatic Agricultural Systems is a multi-year research initiative launched in July 2011. It is designed to pursue community-based approaches to agricultural research and development that target the poorest and most vulnerable rural households in aquatic agricultural systems. Led by WorldFish, a member of the CGIAR Consortium, the program is partnering with diverse organizations working at local, national and global levels to help achieve impacts at scale.
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Keywords: Agriculture ; Aquaculture ; Agriculture ; Aquaculture ; Development projects ; research
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 35
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  • 19
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    Synthesis of aquaculture policy and development approaches in Africa (2021)
    WorldFish | Zomba, Malawi
    In:  http://aquaticcommons.org/id/eprint/12705 | 115 | 2013-12-04 01:31:27 | 12705 | WorldFish Center
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    Publication Date: 2021-07-04
    Description: The WorldFish Center was tasked to undertake a study to access, collate and develop background materials to produce an internationally linked and Africa-wide perspective on sectorally relevant policy issues. The specific objective of the study was to assess and define conditions and impact pathways, in Africa or elsewhere, where markets, policies, resources and technologies have combined to promote steady and sustainable growth of aquaculture, and where have been clear direct impacts on food supply, income, employment and consumption opportunities, as well as increase in supply that has led to stabilised prices. The study was also aimed at providing guidelines for scaling up the implementation of the synthesis study via Afri-FishNet (CAADP Fish Expert Pools) at the national and regional levels.
    Description: Submitted to: The NEPAD Aquaculture Working Group, NEPAD Programme on African Fisheries. NEPAD Fish Node, Bunda College, Lilongwe
    Keywords: Aquaculture ; Sociology ; Aquaculture ; Policies ; Governance ; Africa
    Repository Name: AquaDocs
    Type: monograph
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  • 20
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    Feed the future aquaculture project: draft quarterly progress report, Jan-March 2013 (2021)
    WorldFish | Dhaka, Bangladesh
    In:  http://aquaticcommons.org/id/eprint/12701 | 115 | 2013-12-04 08:15:49 | 12701 | WorldFish Center
    Details
    Publication Date: 2021-07-04
    Description: The Feed the Future Aquaculture project is a five year transformative investment in aquaculture focused on 20 southern districts in Barisal, Khulna and Dhaka divisions, Bangladesh, which started in October 2011. This report describes the achievements of FtF-Aquaculture project activities implemented during the 6th quarter (January to March 2013) along with cumulative progress on FtF indicators. Due to the seasonality of fish and shrimp production, which is out of sync with the project year, final harvesting of aquaculture production was completed in this quarter. The achievements summarized below relate to progress of project activities. Progress against the FtF indicators that were not reported on previously are now included in this report.
    Description: CGIAR Research Program Livestock and Fish
    Keywords: Aquaculture ; Aquaculture ; Research ; Food security ; Livelihoods
    Repository Name: AquaDocs
    Type: monograph
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  • 21
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    Genetic improvement of freshwater prawn, Macrobrachium rosenbergii (de Man) in India. Phase two: annual report for period January to December 2012 (2021)
    WorldFish | Bhubaneswar, India
    In:  http://aquaticcommons.org/id/eprint/12749 | 115 | 2013-12-03 13:46:30 | 12749 | WorldFish Center
    Details
    Publication Date: 2021-07-05
    Description: Macrobrachiurn rosenbergii is one of the widely cultured freshwater prawn species globally. India was the third largest producer of this species in 2007 and its aquaculture production rose to 43,000 metric tons (t) in 2005 froin less than 500 t in 1995. However, since then production has been declining and in 2008-09 it was 12,856 t, a reduction of more than 70% compared to 2005. There are several contributing factors to this decline, such as slow growth rate, poor survival, disease outbreaks, increase in cost of production, and availability of low risk alternative fish species. However, there is a consensus that poor seed quality leading to unsatisfactory growth and survival rates in ponds is one of the major reasons. Hence, the development of a systematic selective breeding program aimed at improving growth rate and ensuring high survival rate of this species was deemed a high priority. The Central Institute of Freshwater Aquaculture (CIFA), Bhubaneswar, India in collaboration with the WorldFish Center, Malaysia initiated a selective breeding program for this species in 2007.
    Description: CIFA - WorldFish Project on Genetic Improvement of Freshwater Prawn, Macrobrachium rosenbergii (de Man) in India (Phase Two)
    Keywords: Aquaculture ; Prawn culture ; Genetics ; Seed production ; Selective breeding ; Freshwater aquaculture ; India •Livestock and Fish
    Repository Name: AquaDocs
    Type: monograph
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  • 22
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    Community-based marine resource management in Solomon Islands: a facilitators guide (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/12751 | 115 | 2013-12-03 13:58:51 | 12751 | WorldFish Center
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    Publication Date: 2021-07-05
    Description: This guide was developed to document the process and activities that WorldFish staff have used and adapted as facilitators working with communities interested in marine resource management in Solomon Islands. It draws on the experiences from work conducted with FSPI and MFMR through ACIAR funded projects, with communities that had a primary interest in the management of coral reef fisheries. Since 2011 the process has been trialed and adapted further with communities interested in mangrove ecosystem management (through the MESCAL project). This guide is based on lessons about the process of a community developing, writing and implementing a management plan. This guide does not cover lessons about the outcomes of that management.
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Description: Based on lessons from implementing CBRM with rural coastal communities in Solomon Islands (2005-2013)
    Keywords: Aquaculture ; Fisheries ; Ecology ; Marine resources ; Resource management ; Participatory approach ; Solomon Islands
    Repository Name: AquaDocs
    Type: monograph
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  • 23
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    Institutional, policy and regulatory framework for sustainable development of the Egyptian aquaculture sector (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/12756 | 115 | 2013-12-04 08:34:48 | 12756 | WorldFish Center
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    Publication Date: 2021-07-05
    Description: This report presents the findings of a mission to critically review the institutional, policy and regulatory framework for sustainable development of the Egyptian aquaculture sector. The study was undertaken by an International Expert on Aquaculture Policy, and a National Expert on Institutions, on behalf of the Project “Improving Employment and Income through the Development of Egypt’s Aquaculture Sector“, implemented by WorldFish and CARE, and funded by the Swiss Agency for Development and Cooperation(SDC). The objective of the mission was to assess the current status of the Egyptian aquaculture sector, in terms of the policy, legal and institutional environment, with a view to suggesting the major issues to be addressed within a future policy dialogue.
    Description: Swiss Agency for Development and Cooperation
    Description: Improving Employment and Income through the Development of Egypt’s Aquaculture Sector (IEIDEAS) Project
    Keywords: Aquaculture ; Aquaculture ; Policy ; Governance ; Aquaculture development ; Egypt
    Repository Name: AquaDocs
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  • 24
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    Food and nutrition security in Timor-Leste (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/12757 | 115 | 2013-12-04 08:29:50 | 12757 | WorldFish Center
    Details
    Publication Date: 2021-07-05
    Description: This report is a literature review on Food and Nutrition Security in Timor-Leste based on data from surveys conducted by the Timor-Leste National Statistics Directorate, as well as from national and international organizations working in Timor-Leste. This review was supported by the Australian Centre for International Agricultural Research (ACIAR)-funded project “Strategy for Investment in Fisheries in East Timor”. This report describes the current food and nutrition situation in Timor-Leste for the purpose of planning and implementing interventions aimed at improving food and nutrition security, especially within aquatic agricultural systems. The potential role of aquaculture in improving food and nutrition security is considered, with reference to the recently endorsed Timor-Leste National Aquaculture Development Strategy (2012-2030) developed by the National Directorate of Fisheries and Agriculture, Ministry of Agriculture and Fisheries.
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Keywords: Aquaculture ; Aquaculture ; Nutrition ; Food security ; Gender
    Repository Name: AquaDocs
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    Solomon Islands Aquatic Agricultural Systems Program design document (2021)
    WorldFish | Solomon Islands
    In:  http://aquaticcommons.org/id/eprint/12753 | 115 | 2013-12-03 14:16:27 | 12753 | WorldFish Center
    Details
    Publication Date: 2021-07-05
    Description: WorldFish is leading the CGIAR Research Program on Aquatic Agricultural Systems together with two other CGIAR Centers; the International Water Management Institute (IWMI) and Bioversity. In 2012 and 2013 the AAS Program rolled out in Solomon Islands, Zambia, Bangladesh, Cambodia and the Philippines. Aquatic Agricultural Systems are places where farming and fishing in freshwater and/or coastal ecosystems contribute significantly to household income and food security. The program goal is to improve the well-being of AAS-dependent people. A hub is a geographic location that provides a focus for learning, innovation and impact through participatory action research. In Solomon Islands AAS works in Malaita Hub (Malaita Province) and Western Hub (Western Province). In each hub we identify a ‘Development Challenge’ that the Program will address to give us focus and motivation.
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Keywords: Agriculture ; Aquaculture ; Aquatic Agricultural Systems ; Research ; Development projects ; Solomon Islands
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    Tonle Sap scoping report (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/12823 | 115 | 2016-03-01 06:59:01 | 12823 | WorldFish Center
    Details
    Publication Date: 2021-07-06
    Description: The scoping mission team was composed of 14 people representing research institutions (RUPP), government (FiA, IFReDI), NGOs (ANKO, ADIC) and CGIAR institutions (WorldFish and Bioversity). The scoping trip was carried out over a 7-day period from April 28 to May 4 within eight (8) communities in Kampong Thom, Siem Reap, Battambang, Pursat and Kampong Chhnang. In addition, panel discussions were held with local government, fishery, agriculture and water management institutions, NGOs, the private sector and communities, and were convened in Siem Reap, Battambang and Pursat. The AAS scoping team focused their enquiries on five themes, and the findings of this report are presented in sections that highlight the opportunities, challenges and knowledge gaps related to each theme. The sections have been lightly edited to maintain the style and intention of the authors. The themes are: 1) AAS production systems--fish, rice, aquaculture. 2) Livelihoods, poverty, and gender equity . 3) Value chains and markets. 4) Institutions and governance. 5) Knowledge management and partnerships.
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Keywords: Agriculture ; Aquaculture ; Policies ; Aquatic Agricultural Systems ; Development projects ; Research ; Aquaculture ; Fisheries ; Agriculture ; Value chains ; Livelihoods ; Governance ; Gender ; Poverty reduction ; Cambodia ; Tonle Sap L.
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    Study of the Juvenile Shrimp Populations, Penaeus aztecus and Penaeus setiferus, of Galveston Bay (2021)
    Texas Game and Fish Commission Marine Laboratory | Rockport, TX
    In:  http://aquaticcommons.org/id/eprint/14198 | 9596 | 2020-08-31 20:31:32 | 14198 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: One hundred and twenty-three samples were collected producing 3085 white shrimp and 3703 brown shrimp. Juvenile brown shrimp entered the bay in three waves in April, July, and August. Young whites entered in three waves in July, August, and September. The brown shrimp was the more abundant species. Samples produced about one-third as many brown and white shrimp as those of 1961 and about one-tenth as many as those of 1960. Temperatures followed the normal seasonal trend, except for the freeze in January, and a six degree centigrade decline in March. The reduced amount of rainfall and river flow this year resulted in the higher bay salinities than in 1960-61.
    Keywords: Aquaculture ; Fisheries ; penaeid shrimp ; Penaeus aztecus ; Penaeus setiferus ; juveniles ; population dynamics
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    Chemical Analysis of Sinclair Refinery's Waste Waters, Pasadena, Texas - Industrial Waste Control in Region MP-1 (2021)
    Texas Game and Fish Commission | Rockport, TX
    In:  http://aquaticcommons.org/id/eprint/14233 | 9596 | 2020-08-23 21:38:45 | 14233 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: Sinclair Refinery is located on the Houston Ship Channel approximately 2.5 miles above the Washburn Tunnel in Pasadena, Texas. Sinclair employs 2000 personnel and processes over 150,000 barrels of crude per day. Five thousand gallons per minute of waste waters from the refinery enter the Houston Ship Channel after being run through old, outdated, oil skimmers. Samples of this discharge were analyzed for the presence of potentially harmful chemical constituents. It is believed that with the completion of the new retention basin and acid pond with pH control a substantial improvement in water quality should be achieved.
    Keywords: Aquaculture ; Pollution ; wastewater ; chemical analysis ; water analysis ; water quality ; oil pollution ; industrial wastes ; oil refineries ; GBIC
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    Producción de juveniles del patao Eugerres brasilianus (Pisces, Gerreidae) en Santa Cruz del Sur, Camagüey. (2021)
    In:  alajonchere@gmail.com | http://aquaticcommons.org/id/eprint/14960 | 1545 | 2014-04-05 21:35:14 | 14960
    Details
    Publication Date: 2021-06-29
    Keywords: Aquaculture
    Repository Name: AquaDocs
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    Impact of hatchery releases on the recreational fishery for Pacific threadfin (Polydactylus sexfilis) in Hawaii (2021)
    In:  http://aquaticcommons.org/id/eprint/15104 | 403 | 2014-05-28 03:41:12 | 15104 | United States National Marine Fisheries Service
    Details
    Publication Date: 2021-07-02
    Description: The Pacific threadfin (Polydactylus sexfilis) is considered one of the premier Hawaiian food fishes but even with catch limits, seasonal closures, and size limits, catches have declined dramatically since the 1960s. It was identified as the top candidate species for stock enhancement in Hawaii, based on the decline in stocks, high market value, and importance of the fishery.In the stock enhancement program for Pacific threadfin, over 430,000 fingerlings of various sizes were implanted with coded wire tags and released in nursery habitats along the windward coast of Oahu between 1993 and 1998. Because few Pacific threadfin were present in creel surveys conducted between 1994 and 1998, Oahu fishermen were offered a $10 reward for each threadfin that was caught (for both hatchery-reared and wild fish). A total of 1882 Pacific threadfin were recovered from the reward program between March 1998 and May 1999, including 163 hatchery-reared fish, an overall contribution of 8.7% to the fishery. Hatchery-reared fish accounted for as high as 71% of returns in the release areas. Hatchery-reared fish were recovered on average 11.5 km (SD=9.8 km) from the release site, although some had moved as far away as 42 km. Average age for recovered hatchery-reared fish was 495 days; the oldest was 1021 days.Cultured Pacific threadfin juveniles survived and recruited successfully to the recreational fishery, accounting for 10% of fishermen’s catches on the windward side of Oahu. Recruitment to the fishery was highest for the 1997 release year; few juveniles from earlier releases were observed. Presence of a few large, fully developed females in the recreational fishery suggested that hatchery-reared fish can survive, grow, and reproductively contribute to the population. Implementation of an enhancement program that is focused on juveniles and perhaps large females, as part of an integrated fishery management strategy, could speed the recovery of this fish population.
    Keywords: Aquaculture ; Fisheries ; Management
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    The zooplankton species composition and abundance in Ogun River, Abeokuta, Ogun State, southwestern Nigeria (2021)
    In:  http://aquaticcommons.org/id/eprint/15349 | 9513 | 2014-09-19 15:10:35 | 15349
    Details
    Publication Date: 2021-07-06
    Description: Investigation on the species composition and abundance of zooplankton in Ogun River, Abeokuta, Ogun state, Southwestern Nigeria was carried out for a period of seven months (December, 2011-June, 2012), Using hand trawling method, 55 µm mesh size plankton net was trawled horizontally ten times to capture zooplankton. The zooplankton samples were put into properly labeled plastic containers and preserved in 4% formalin solution. A total of sixteen genera from five taxonomic groups were recorded from Ogun River. Cladocera predominated both in terms of species composition and abundance. Five species of Cladocera was recorded consisting of 31.25%. Protozoa and Rotifera recorded four species each consisting of 25%. Copepoda recorded two species consisting of 12.5%, and Ostracoda with one species consisting of 6.25%. The low nature of zooplankton abundance and species composition observed in this study must have been caused by the polluted nature of the water due to the anthropogenic activities carried out around its shores The dominance of Cladocera in this river is similar to findings from River Echara and River Imo, Southeastern Nigeria.
    Keywords: Aquaculture ; Ecology ; Environment ; Fisheries ; Limnology ; Management ; Pollution
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    Monthly spatial occurrence of phytoplankton and zooplankton in River Ogun, Abeokuta, Ogun State, southwest Nigeria (2021)
    In:  http://aquaticcommons.org/id/eprint/15351 | 9513 | 2014-09-19 15:29:26 | 15351
    Details
    Publication Date: 2021-07-06
    Description: The aim of this study was to investigate the monthly spatial occurrence of phytoplankton and zooplankton in River Ogun, Abeokuta, Southwest Nigeria. This was carried out for seven months between December, 2011 and June, 2012 in 4 stations. A total of 41 species of phytoplankton and 16 zooplankton species from 5 classes respectively were recorded. Zooplankton was dominated by Cladocera throughout the study period while phytoplankton was dominated by blue green algae (Cyanophyta or Cyanobacteria). The dominance of Cyanophyta in this river is similar to findings by Sekadende and co-workers, Ogato, Deng and co-worker, and Shakila and co-worker. The dominance of Cladocera in this river is similar to findings by Ude and co-workers, and Ogbuagu and co-worker.
    Keywords: Aquaculture ; Ecology ; Environment ; Fisheries ; Limnology ; Management ; Pollution
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    The phytoplankton species composition and abundance of Ogun River, Abeokuta, southwestern Nigeria (2021)
    In:  http://aquaticcommons.org/id/eprint/15348 | 9513 | 2014-09-19 15:11:35 | 15348
    Details
    Publication Date: 2021-07-06
    Description: The phytoplankton species composition and abundance in Ogun River, Ogun state, Southwest Nigeria was studied for a period of seven months (December, 2011 - June, 2012), a total of forty-one genera belonging to five taxonomic groups were recorded from Ogun River. The phytoplankton species composition was surpassed by Chrysophyta with 15 species consisting of 36.6% followed by Chlorophyta with 14 consisting of 34.1%. This was followed by Cyanophyta (7 species) consisting of 17.1%, Euglenophyta with 3 species consisting of 7.3% and Pyrrophyta with 2 species consisting 4.92%. Cyanophyta was the highest in abundance consisting of 41% while the lowest in abundance was Pyrrophyta consisting of 1.5%. The low nature of phytoplankton abundance and diversity observed in this study must have been caused by the polluted nature of the water due to the anthropogenic activities carried out around its shores The dominance of Cyanophyta in this river is similar to findings from Lake Victoria, Lake Bishoftu, Lake Chaohu and the temple pond of Thirupour.
    Keywords: Aquaculture ; Ecology ; Environment ; Fisheries ; Limnology ; Management ; Pollution
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    Use of flsh-pond mud as a source of organic fertilizer to vegetable crops (2021)
    International Center for Living Aquatic Resources Management | Zomba, Malawi
    In:  http://aquaticcommons.org/id/eprint/15366 | 6 | 2014-09-23 07:01:31 | 15366 | WorldFish Center
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    Publication Date: 2021-07-06
    Keywords: Agriculture ; Aquaculture
    Repository Name: AquaDocs
    Type: monograph
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    Farmer-scientist research partnerships for integrated agriculture-aquaculture (2021)
    International Center for Living Aquatic Resources Management | Zomba, Malawi
    In:  http://aquaticcommons.org/id/eprint/15365 | 6 | 2014-09-23 07:00:17 | 15365 | WorldFish Center
    Details
    Publication Date: 2021-07-06
    Description: A realistic alternative to traditional technology development and transfer has been utilized by the International Center for Living Aquatic Resources Management (ICLARM) to integrate pond fish culture into low-input farming systems in Malawi. Resource mapping was used to assess farm resources and constraints and introduce the concept of integrated resource management (IRM), the synergistic movement of resources between and among farm andhousehold enterprises. Farmer-led IRM research projects are conducted on-farm and monitored by researchers through direct observation and on-station simulation of constraints and management practices. Technology-adoption rates by farmers involved in a pilot activity was 65% compared to 0% by farmers exposed only to top-down extension approaches. Within two years of adoption, every participating farmer had transferred the technology to an average of four other farmers without the involvement of the extension services.
    Description: ICLARM African Aquaculture Project
    Keywords: Agriculture ; Aquaculture
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    Guidelines for undertaking rapid biodiversity assessments in terrestrial and marine environments in the Pacific (2021)
    Pacific Regional Environment Programme (SPREP) | Apia, Samoa
    In:  irc@sprep.org | http://aquaticcommons.org/id/eprint/15369 | 11964 | 2014-09-25 11:47:56 | 15369 | Secretariat of the Pacific Regional Environment Programme (SPREP)
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    Publication Date: 2021-07-06
    Description: BIORAP
    Description: BEM
    Description: Hard copies are also available from: irc@sprep.org
    Keywords: Aquaculture ; Conservation ; Earth Sciences ; Ecology ; Environment ; Oceanography ; rapid biodiversity assessment ; pacific ; terrestrial ; marine ; guidelines ; natural resources conservation area ; oceania ; sprep ; 2014 ; Pacific Regional Environment Programme (SPREP) ; Wildlands
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    Integrated aquaculture-agriculture adoption and impact in rainfed farming systems in Sakata, Malawi (2021)
    International Center for Living Aquatic Resources Management | Zomba, Malawi
    In:  http://aquaticcommons.org/id/eprint/15367 | 6 | 2014-09-23 07:02:03 | 15367 | WorldFish Center
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    Publication Date: 2021-07-06
    Description: ICLARM introduced integrated aquaculture-agriculture (IAA) in Sakata, Malawi three years ago. Since that time, and without extension support, the number of farmers with ponds increased from 4 in 1993/94 to 12 in 1995/96. To learn why and how IAA is spreading, a study of impact and adoption was conducted in the 1995/96 production season. Interviews were conducted with farmers to discuss lAA and collect data on farm function through the use of bioresource flow diagrams. Motivations given by farmers as to why they adopted IAA were to improve household nutrition and income. Constraints to adoption identified by farmers were availability of labor and capital to purchase inputs
    Description: Southern African Development Community
    Keywords: Agriculture ; Aquaculture
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    Strengthening community roles in aquatic resource governance in Uganda (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/15596 | 115 | 2014-11-19 08:49:14 | 15596 | WorldFish Center
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    Publication Date: 2021-07-08
    Description: Lake Victoria fisheries face severe environmental stresses. Stocks are declining in a context of increasing population and growing demand for the lake’s resources. Rising competition between users is putting conservation goals and rural livelihoods at risk. While Uganda’s co-management policy framework is well-developed, key resources for implementation are lacking, enforcement is poor, and the relations between stakeholders are unequal. Poor rural resource users face significant challenges to effectively participate in fisheries decision-making. This case study demonstrates the progress that can be made using a collaborative approach to catalyze community-led actions linking public health, sanitation and environmental conservation in difficult circumstances, even over a relatively short time period. Multistakeholder dialogue can bring to light the sources of conflict, pinpoint governance challenges, and identify opportunities for institutional collaboration to address community needs. At the same time, the process can help build trust, confidence in collective action and public accountability.
    Description: Collaborating for Resilience
    Keywords: Agriculture ; Aquaculture ; Accountability ; Aquatic Agricultural Systems ; Aquatic resources ; Capacity development ; Co-management ; Conservation ; Environmental protection ; Equity ; Fisheries management ; Fresh water ; Governance ; Health ; Human rights ; Livelihoods ; Monitoring and evaluation ; Natural resource management ; Participatory action research ; Partnerships ; Policy ; Research ; Resilience ; Vulnerability ; Uganda ; Africa
    Repository Name: AquaDocs
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    Foods and diets of communities involved in inland aquaculture in Malaita Province, Solomon Islands (2021)
    CGIAR Research Program on Aquatic Agricultural Systems | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/15603 | 115 | 2014-11-19 10:09:58 | 15603 | WorldFish Center
    Details
    Publication Date: 2021-07-08
    Description: Solomon Islands has a population of just over half a million people, most of whom are rural-based subsistence farmers and fishers who rely heavily on fish as their main animal-source food and for income. The nation is one of the Pacific Island Counties and Territories; future shortfalls in fish production are projected to be serious, and government policy identifies inland aquaculture development as one of the options to meet future demand for fish. In Solomon Islands, inland aquaculture has also been identified as a way to improve ood and nutrition security for people with poor access to marine fish. This report undertaken by a Worldfish study under the CGIAR Research Program on Aquatic Agricultural Systems explores the e potential role of land-based aquaculture of Mozambique tilapia in Solomon Islands as it relates to household food and nutrition security. This nutrition survey aimed to benchmark the foods and diets of households newly involved in small homestead tilapia ponds and their neighboring households in the central region of Malaita, the most populous island of all the provinces in Solomon Islands. Focus group discussions and semistructured interviews were employed in 10 communities (five inland and five coastal), four clinics, and five schools.
    Keywords: Agriculture ; Aquaculture ; Aquatic Agricultural Systems ; Livelihoods ; Food security ; Nutrition ; Small-scale aquaculture ; Surveys ; Tilapia ; Pacific ; Solomon Islands
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    Aquaculture and food security, poverty alleviation and nutrition in Ghana: Case study prepared for the Aquaculture for Food Security, Poverty Alleviation and Nutrition project (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/15601 | 115 | 2014-11-19 10:05:09 | 15601 | WorldFish Center
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    Publication Date: 2021-07-08
    Description: This study provides an overview of the aquaculture sector in Ghana. It assesses the actual and potential contribution of aquaculture to poverty reduction and food security, and identifies enabling conditions for and drivers of the development of Ghana’s aquaculture sector. The study uses data collected from a variety of primary and secondary sources, including key informant interviews with actors within the aquaculture sector and relevant secondary literature.
    Keywords: Agriculture ; Aquaculture ; Food security ; Poverty reduction ; Small-scale farmers ; Small-scale fisheries ; Small-scale aquaculture ; Research ; Africa ; Ghana
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    Life history and behaviour of Indian prawns (2021)
    In:  http://aquaticcommons.org/id/eprint/16162 | 12051 | 2015-02-08 09:53:32 | 16162 | Society of Fisheries Technologists, India
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    Publication Date: 2021-06-29
    Description: Studies on life history and behaviour of prawns form an essential background for the understanding of the disposition of their fisheries and for the formulation of effective methods of exploitation and measures of conservation.
    Keywords: Biology ; Fisheries ; Penaeus ; life history ; prawns ; India
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    Some observations on the problem of marine timber destroying organisms of Indian coasts (2021)
    In:  http://aquaticcommons.org/id/eprint/16159 | 12051 | 2015-02-08 09:49:17 | 16159 | Society of Fisheries Technologists, India
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    Publication Date: 2021-06-29
    Description: In India the chief marine timber boring organisms are 2 species of Martesia, 28 species of shipworms, 4 species and a variety of Sphaeroma and 9 species of Limnoria besides bacteria and fungi. The occurrence, abundance and activity of the various species of borers show remarkable variations and fluctuations in the different harbours of India, each harbour or area having its own dominant set of species and an assemblage of less important forms. These species have their own characteristic preferences, life history and seasons of attachment and a scheme evolved for one locality may prove ineffective for another. Through a delicate and complex ecological adjustment the borers occurring in a locality have reached an interrelationship reducing interspecific and intraspecific competition. The seasons of settlement of the dominant borers in the different harbours of India are indicated. The need for a detailed biological enquiry is stressed.
    Keywords: Biology ; coastal waters ; wood ; boring organisms ; ecological distribution ; life history ; boring organisms ; Martesia ; Sphaeroma ; Limnoria ; India
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    Breeding behaviour in Macrobrachium rosenbergii (De Man) (2021)
    In:  http://aquaticcommons.org/id/eprint/16164 | 12051 | 2015-02-08 09:56:08 | 16164 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-06-29
    Description: During the course of experimentations on the inducement of breeding in Macrobrachium rosenbergii (De Man) under laboratory conditions, detailed observations on the mating behaviour of the species have been made, which have been elaborated in this account. Various behaviour patterns have been analysed critically and the probable directive and releasive factors for these behaviour patterns discussed. Differences in behaviour of the male resulting from the introduction of another mature male in the arena have been described. An aberrant displacement activity which has been observed in one of the males has also been discussed.
    Keywords: Aquaculture ; Macrobrachium rosenbergii ; induced breeding ; freshwater crustaceans ; reproductive behaviour ; India
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    Deepwater prawns and lobsters off the Kerala coast (2021)
    In:  http://aquaticcommons.org/id/eprint/16168 | 12051 | 2015-02-09 07:21:54 | 16168 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-06-29
    Description: Majority of the prawn catch of the Kerala coast comes from the inshore regions within the 10 fathom line. A bottom deposit formed of fine mud rich in humus is found to be the ideal condition for the penaeid prawns. Similarly the lobster is observed in large numbers at localised areas very near the coast in the crevices of rocks. Though it has been observed that prawns and lobsters exist in deep water as well under different conditions, our knowledge about these forms along the Indian coasts is very scanty, being restricted to the works of Spence Bate, Alcock, De Man and Ramadan. Recently, during the cruises of the University Research Vessel Conch off the Kerala Coast (1958-1963) two species of deep water prawns and one species of lobster were collected from depths 100 - 180 fathoms. Of these, Penaeopsis philippi is found in large numbers occupying an almost continuous bed extending from Anjengo to Mangalore, while P. rectacutus has a restricted appearance between Cochin and Calicut. However, some sort of year to year variation has also been observed regarding the abundance of the species at various stations. Peurulus sewelli has a more restricted distribution, the maximum number being found between Puvar and Cochin. Attempt has been made to correlate the occurrence of the species with the hydrological conditions at the bottom and the nature of the substratum. It is observed that Peurulus sewelli occupies a more or less hard bed formed of sand with shell fragments or stones and small percentage of silt, the bottom temperature at the stations varying from 11°C to l4°C. P. sewelli is a more or less permanent inhabitant of the edge of the continental shell off the Kerala Coast worthy of attention for detailed investigation with a view to explore the possibilities of commercial exploitation.
    Keywords: Biology ; Fisheries ; geographical distribution ; deep waters ; panaeopsis philippi ; peurulus sewelli ; panaeopsis rectacutus ; Kerala ; India
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    Fishing gear and methods of the river Brahmaputra in Assam (2021)
    In:  http://aquaticcommons.org/id/eprint/16196 | 12051 | 2015-02-10 08:04:16 | 16196 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-06-30
    Description: Potentially the inland fishery resources of the country are of very high order. But the present level of their exploitation is far from optimum, mainly because of the inadequacies of the existing fishing gear and methods. There is vast scope for increasing the fish production from inland waters by improving the existing gear and methods. This would require a thorough study of the fishing gear and methods in vogue, of which very little is known at present. In the present communication the authors discuss the fishing gear and methods of the river Brahmaputra, in Assam, based on a survey carried out by them during January-February 1964. The survey covers a 640 km stretch of the Brahmaputra River, its important tributaries and connected bheels, from Dhubri to Dibrugarh. As a result of the survey about 19 types of fishing nets, which could be grouped into eight classes, were identified. The salient technological features of the gears and their methods of operation are discussed class-wise. The characteristics of the individual types are shown in tables. The materials used for gear and gear accessories, are briefly discussed. The classification and relative importance of different types of gear are examined. Besides, the influence of the ecological and topographical features of the river on the development of different types of fishing gears, is also discussed.
    Keywords: Fisheries ; fishing gears ; fishing methods ; Brahmaputra River ; Assam ; India
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    On the production and nutritive value of fish meal from Silver belly (Leiognathus spp.) landings at Rameswaram (2021)
    In:  http://aquaticcommons.org/id/eprint/16210 | 12051 | 2015-02-10 08:17:43 | 16210 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-06-30
    Description: Silver belly (Leiognathus Spp.) forms a major fishery in recent years in the Rameswaram island but fetches for the fishermen very low prices ranging from Rs. 0.03 to 0.12/Kg only, there being practically no demand for the fish. The possibilities of utilizing this cheap fish are discussed and the processing method described. During the glut season the cost of production of Silver belly fish meal works out to competitive prices of Rs. 500 to 700/ton. The silver belly fish meal is of high quality with good protein content averaging 57.71% in commercial samples and 61.90% in laboratory samples and with a high pepsin digestibility of 90.0% to 92.5%. The essential amino acid composition of the Silver belly fish meal compares very favorably with other round fish meals, with high contents of lysine, leucine, arginine, isoleucine, methionine, phenyl alanine, threonine and valine. Since there is good demand for fish meal as poultry and cattle food both in the internal and external markets, there is good scope for large scale production and sale of fish meal.
    Keywords: Fisheries ; nutritive value ; fish meals ; Silver belly ; Leiognathus ; processing fishery products ; marketing ; Rameswaram ; Ramanathapuram ; Tamil Nadu ; India
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    Studies on the storage characteristics of Silver pomfret (Pampus argentus) transported to Bombay (2021)
    In:  http://aquaticcommons.org/id/eprint/16232 | 12051 | 2015-02-13 08:49:26 | 16232 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-01
    Description: An investigation on the quality of pomfrets transported to Bombay from Gujarat coast and its subsequent changes during storage at room temperature and low temperature were carried out and the results reported. The pomfrets transported in boats having insulated holds were in better condition than those having non insulated holds. In general, the transported fish can be effectively stored in ice for 2 days, while the fish is in acceptable condition up to 4 days.
    Keywords: Fisheries ; Silver pomfret ; Pampus argentus ; storage methods ; quality control ; biochemical composition ; freezing storage ; fish storage ; Bombay ; Maharashtra ; India
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    The study of the sea state data collected from Bay of Bengal during 1964-65 (2021)
    In:  http://aquaticcommons.org/id/eprint/16288 | 12051 | 2015-03-09 15:15:30 | 16288 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-02
    Description: The wave data collected on board Ins Kistna from Bay of Bengal during July to August, 1964 and January, February and April, 1965 are presented. The wave parameters are analyzed and given in a form most suitable for model testing of ships. The variation of wave height with Beaufort number is remarkable. Wave periods from 2 to 10 seconds are observed with maximum frequency in the range of 2 to 5 seconds. The heights and period obtained are compared with those obtained by previous workers for the North Atlantic region and Bay of Bengal. The influence of the wave period 2 to 5 seconds on the rolling, pitching and heaving periods of medium size vessels is also discussed.
    Keywords: Oceanography ; sea state ; data collection ; geophysical data ; design wave ; wave period ; wave height ; statistical analysis ; wave statistics ; dynamical oceanography ; Bay of Bengal ; India
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    A mechanical device for eradication of submerged aquatic weeds (2021)
    In:  http://aquaticcommons.org/id/eprint/16305 | 12051 | 2015-03-28 15:10:40 | 16305 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-03
    Description: This paper embodies details and method of operation of a mechanical device developed for eradication of submerged aquatic weeds. The economics of operation is also discussed.
    Keywords: Biology ; aquatic weeds ; underwater weeds ; aquatic plants ; plant control ; harvesting machines ; eradication ; India
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    Fishing gear research at the Central Institute of Fisheries Technology (2021)
    In:  http://aquaticcommons.org/id/eprint/16284 | 12051 | 2015-03-09 15:10:46 | 16284 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-02
    Description: The Craft and Gear Wing of the Central Institute of Fisheries Technology was established to develop the country's fishing boats and implements scientifically and systematically. The Wing was organized in the year 1957 as a part of the fisheries development schemes included under the Second Five Year Plan.
    Keywords: Fisheries ; fishing gears ; catching methods ; fishing technology ; artisanal fishing ; India
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    Role of technology in the development of fisheries (2021)
    In:  http://aquaticcommons.org/id/eprint/16285 | 12051 | 2015-03-09 15:13:13 | 16285 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-02
    Description: The basic purpose of fishing is to catch/harvest as much fish as possible and reach it to the consumer as a wholesome, acceptable food, though fishery development programs are based on diverse objectives which include, besides the production of a valuable food, creation of employment opportunities, socio-economic uplift of the fishermen community, and earning foreign exchange through export. Both the production and the utilization of fish depend intrinsically on the efficient application of technology.
    Keywords: Fisheries ; fisheries technology ; fisheries development ; fishing gears ; catching methods ; fish preservation ; India
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    Seasonal variation in the chemical composition of pomfrets. Pt. 1. Black pomfret (Parastromateus niger) (2021)
    In:  http://aquaticcommons.org/id/eprint/16301 | 12051 | 2015-06-24 13:22:04 | 16301 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-03
    Description: Seasonal variations in proximate composition of the different parts such as head, middle, tail and skin of black pomfret (Parastromateus niger) are reported over three years on monthly basis. The lean and fatty conditions of fish are discussed on the basis of spawning period, food and feeding activity, size group appearance and the gonadal maturity of the pomfret.
    Keywords: Biology ; chemical composition ; fatty acids ; reproductive cycle ; black pomfrets ; Parastromateus niger ; commercial fisheries ; India
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    Evaluation on propagation of common carp (Cyprinus carpio Lin.) with hormonal and natural stimuli (2021)
    In:  http://aquaticcommons.org/id/eprint/16379 | 12051 | 2015-03-27 09:56:06 | 16379 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-04
    Description: The success of breeding of common carp (Cyprinus carpio) using hormonal inducement and environmental stimuli was evaluated considering different sex ratios, and natural and artificial substrates. A total of 18 females (weighing 250 to 2200g) divided into 6 treatments were investigated. A successful spawning was observed in all the treatment groups, only. 66.66% female responded successfully to LHRH-A combined with dompheridone and 83.33% female in natural stimuli. Females induced with LHRH-A and dompheridone found prompt ovulation than that of natural stimulation. A significant variation (F=7.45, P〈0.05) was found among the different treatment groups. The number of eggs released appear to depend on body weight (t=15.72, P〈0.05), sex ratio (t=7.96, P〈0.05) and percentage of ovulated females (t=5.34, P〈0.05). Although environmentally stimulated females released more eggs than injected female (t=5.18, P〈0.05) but their survival rate was similar (t=1.77, P〈0.05). Comparison between the two approaches under the conditions of AIT hatchery shown that both are suitable for spawning induction in common carp. However, environmental stimulation is advantageous because of the less labor and lower cost required for ovulation.
    Keywords: Aquaculture ; common carps ; Cyprinus carpio ; hormones
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    Manipulation of chromosomes in fish: review of various techniques and their implications in aquaculture (2021)
    In:  http://aquaticcommons.org/id/eprint/16393 | 12051 | 2015-03-27 09:58:51 | 16393 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-04
    Description: Human ingenuity has made it possible to advent the chromosome manipulation techniques to produce individuals with differing genomic status in a number of fish using various causal agents such as physical shocks (temperature or hydrostatic pressure), chemical (endomitotics) and anesthetic treatments either to suppress the second meiotic division shortly after fertilization of eggs or to prevent the first mitotic division shortly prior to mitotic cleavage formation. This results in the induction of polyploidy (triploidy and tetraploidy), gynogenesis (both meiotic and mitotic leading to clonal lines) and androgenesis in fish population. The rationale for the induction of such ploidy in fish has been its potential for generating sterile individuals, rapidly inbred lines and masculinized fish, which could be of benefit to fish farming and aquaculture. In this paper, these are critically reviewed and the implication of recently developed chromosome manipulation techniques to various fin fishes is discussed.
    Keywords: Aquaculture ; clones ; cell division ; chromosomes ; fish eggs ; hybrid culture ; polyploidy ; gynogenesis ; androgenesis ; reproduction ; biotechnology
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    Seasonal fluctuation in the distribution of eggs and larvae of flat fishes (Pleuronectiformes - Pisces) in the Cochin backwater (2021)
    In:  http://aquaticcommons.org/id/eprint/16329 | 12051 | 2015-03-28 14:08:49 | 16329 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-03
    Description: Attempts have been made to correlate the abundance of eggs and larvae of flat fishes belonging to families Cynoglossidae and Soleidae with the hydrographical parameters of the environment, particularly the salinity. The eggs and larvae were found to occur in the Cochin backwater during the pre-monsoon period but not during the south west monsoon period. During the south west monsoon period larvae belonging to very early stages were found at the marine end (Fairway Buoy). The continued or prolonged existence of very low salinity appears to restrict the distribution of flat fish larvae. In the post-monsoon period also the eggs and larvae were not found in regions of very low salinity. Larvae of Cynoglossus puncticeps (Richardson), C. brevis Gunther, C. cynoglossus (Ham. Buch), C. lida (Bleeker) and Solea heinii Steindachner were obtained in the collection taken from the estuary. From the data it is seen that each species has specific spawning period.
    Keywords: Biology ; fish eggs ; backwaters ; pleuronectiformes ; Cochin ; Kerala ; India
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    The influence of nitrogen and phosphorus on the growth of a diatom Skeletonema costatum (Greville) Cleve (2021)
    In:  http://aquaticcommons.org/id/eprint/16382 | 12051 | 2015-03-27 10:07:19 | 16382 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-04
    Description: Nitrogen and phosphorus requirements of a chain-forming diatom, Skeletonema costatum (Greville) Cleve, collected from Yatsushiro Sea, Japan, were investigated in a laboratory culture experiment. Sodium nitrate and sodium glycerophosphate were used as nitrogen and phosphorus sources, respectively. Cultures were grown in modified Provasoli's ASP2NTA medium (Provasoli et al. 1957) at 25±1°C, light intensity 60 µE mˉ² secˉ¹ and photoperiod 12:12-h, L:D cycle. Optimum growth was observed at nitrate concentrations of 3-10 mglˉ¹ and phosphate concentrations of 1.5-15 mglˉ¹. Adequate growth was also found at the nitrate concentration of up to as high as 300 mglˉ¹. Significantly poorer growth was found at lower nitrate (〈3.0 mglˉ¹) and higher phosphate (〉15 mglˉ¹) concentrations. From the present study, it is concluded that S. costatum can grow well at wide ranges of nitrate concentrations but is sensitive to higher phosphate concentrations.
    Keywords: Aquaculture ; marine algae ; diatom ; Skeletonema costatum ; nitrogen ; phosphorus ; growth rate
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    Effects of culture treatments on HUFA levels in Artemia cysts (2021)
    In:  http://aquaticcommons.org/id/eprint/16386 | 12051 | 2015-03-27 09:40:56 | 16386 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-02
    Description: Artemia cysts (of GSL, Utah, USA origin) were produced from the modified traditional solar salt works of Bangladesh during winter months through different feeding/fertilization treatments (T1, T2, T3, T4 ) were analyzed to understand the effects of treatments on their fatty acid profile. Palmitic, Linolenic, Eicosapantaenonic and Docohexaenoic acids (mg/g. DW) were found highest for the cysts in T1 (16.0% ±1 .36), T2 (14.7% ±0.47), T3 (4.7% ±0.40) and T4 (0.7% ±0.06) treatments, respectively. High amount of 18:3(n-3) acids in the cysts of all sources proves to be freshwater type of the cysts. The presence of marine type essential fatty acids in the cysts of all sources were found low for 20:5n-3 (3.7-4.7%) and very low for 22:6n-3 (0.09-0.7%). No significant variation was observed for 16:0 acids within the treatments, but for 18:3(n-3) acid, the variation was found highly significant (P= 0.0052) between T2 and T4 treatments. For 20:5(n-3), only variation between T2 and T4 was found insignificant (P=0.1161), but between other treatments, significant variation was observed between T2 and T4 (P=0.0241), T2 and T4 (P=0.0022) and T1 andT4 (P=0.0161). No significant variation was found in other treatments.
    Keywords: Aquaculture ; Artemia ; HUFA ; cysts ; EFA
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    Studies on the optimum protein to energy ratio of African catfish (Clarias batrachus Burchell) (2021)
    In:  http://aquaticcommons.org/id/eprint/16385 | 12051 | 2015-03-27 10:05:32 | 16385 | Bangladesh Fisheries Research Institute
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    Publication Date: 2021-06-25
    Description: A laboratory trial was conducted to determine the optimum dietary protein to energy (P/E) ratio of African catfish, Clarias gariepinus. The experiment was carried out in a flow-through system for 6 weeks. There were 12 treatments each with two replicates having 10 fish each with a mean initial weight of 1.80 ± 0.02g. Twelve semi-purified diets were formulated with four digestible crude protein levels (23, 26.5, 30 and 33.5%) and three digestible energy levels (2.25, 2.75 and 3.25 Kcal/g). The fish were fed three times daily at satiation level. The results of the study showed that, diet containing 33.5% digestible protein and 2.75 kcal/g digestible energy with a protein to energy ratio of 121 .8 (mg protein/kcal) appeared to be best utilized for growth.
    Keywords: Aquaculture ; catfishes ; Clarias gariepinus ; protein ratio ; energy ratio ; diets ; feed
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    Polyculture of gulsha (Mystus cavasius Ham.) with rajpunti (Puntius gonionotus Bleeker) and silver carp (Hypophthalmichthys molitrix Val.) in earthen ponds (2021)
    In:  http://aquaticcommons.org/id/eprint/16380 | 12051 | 2015-03-27 10:00:08 | 16380 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-04
    Description: Culture of gulsha (Mystus cavasius) with rajpunti (Puntius gonionotus) and silver carp ( Hypophthalmichthys molitrix) was undertaken to assess the growth and production potential of these species under polyculture system. Fingerlings of gulsha, rajpunti and silver carp were stocked at a density of 18.000, 10.000 and 4.000/ha respectively. Two treatments were tested in this experiment. Treatment-I was conducted with rice bran and mustard oil cake and treatment-II with rice bran and duck weed. All the ponds were fertilized with urea and TSP at fortnightly intervals. After six months' rearing, the gross production was estimated to be 3,582 and 3,125 kg/ha from treatment-I and treatment-II respectively. Total yield showed non-significant differences (P〉0.05) between the treatments.
    Keywords: Aquaculture ; polyculture ; Mystus cavasius ; Puntius gonionotus ; Hypophthalmichthys molitrix
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    Rice-fish and rice mono-crop production at Gouripur, Mymensingh: an economic analysis (2021)
    In:  http://aquaticcommons.org/id/eprint/16392 | 12051 | 2015-03-27 10:03:07 | 16392 | Bangladesh Fisheries Research Institute
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    Publication Date: 2021-07-04
    Description: This study examines the relative profitability of rice-fish culture and rice mono-crop production at Gouripur thana of Mymensingh district. The results of the study show that the rice-fish farming was economically more rewarding than the rice mono-crop farming, although both the farming activities were found profitable over cash as well as full costs. In addition to extra earnings from fish, the rice-fish farming produced significantly a higher yield of rice requiring very minimum extra cost for fish. Rice-fish farming also reduced variability in yield of and return from rice.
    Keywords: Aquaculture ; rice fields ; rice field aquaculture ; production cost ; economic analysis ; agropisciculture ; fish culture ; aquaculture systems ; Gouripur ; Mymensingh ; Bangraldesh
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    Investigation on bacterial flora of farmed freshwater prawn (Macrobrachium rosenbergii de Man) in Bangladesh (2021)
    In:  http://aquaticcommons.org/id/eprint/16401 | 12051 | 2015-03-27 09:58:22 | 16401 | Bangladesh Fisheries Research Institute
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    Publication Date: 2021-07-04
    Description: Total bacterial load in the haemolymph of freshwater prawn Macrobrachium rosenbergii varied from 6.2x10⁴ to 1.9x10⁷ CFU/ml whereas in the hepatopancreas, bacterial load varied from 1.9x10³ to 2.9x10⁵ CFU/g. The total bacterial load in the pond water varied from 2.6x10² to 4.1x10⁵ CFU/ml. The isolated bacterial genera in the haemolymph and the hepatopancreas of prawn were Streptococcus, Acinetobacter, Micrococcus, Aeromonas, Vibrio, Flavobacterium, Staphylococcus and Pseudomonas, whereas the detected bacterial genera in pond water were Micrococcus, Streptococcus, Vibrio, Flavobacterium, Staphylococcus, Pseudomonas and Aeromonas. Among the detected genera, Vibrio and Staphylococcus were found to be dominant genera in the haemolymph of the sampled prawn throughout the study period whereas Staphylococcus and Pseudomonas were dominant in pond water.
    Keywords: Aquaculture ; pathogenic bacteria ; haemolymph ; prawn culture ; hepatopancreas ; bacteriology ; Macrobrachium rosenbergii
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    Effect of supplementary feed on the growth of shinghi (Heteropneustes fossilis Bloch) (2021)
    In:  http://aquaticcommons.org/id/eprint/16407 | 12051 | 2015-03-27 09:40:26 | 16407 | Bangladesh Fisheries Research Institute
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    Publication Date: 2021-07-04
    Description: Effect of two supplementary feed (food A and food B) on the growth of shinghi, Heteropneustes fossilis was observed for 3 months period during winter and summer. Food B containing rice bran 2 g, wheat bran 2 g and blood 10 ml, showed better growth. The net gain in length was 70.04 mm and in weight was 13.82 g. Total net production was observed as 254.00 g/m² with feed A and 345.50 g/m² with feed B.
    Keywords: Aquaculture ; diets ; growth ; artificial feeding ; fish culture ; Heteropneustes fossilis
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    Seasonal variation in the occurrence of some zooplankton in a fish pond (2021)
    In:  http://aquaticcommons.org/id/eprint/16406 | 12051 | 2015-03-27 10:03:38 | 16406 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-04
    Description: Observations were made on the seasonal variation in the occurrence of some zooplankton in a fish pond. A total of 31 genera were recorded, out of these, 8 belongs to Rotifera, 5 to Copepoda, 112 to Cladocera, 3 to Protozoa, 2 to Nematoda and 1 to Oligochaeta. The role of temperature, dissolved oxygen, free Co2, pH, turbidity and alkalinity in the occurrence of different genera is discussed.
    Keywords: Aquaculture ; physicochemical properties ; zooplankton ; water quality ; fish ponds ; seasonal variation
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    Effects of cowdung application on the production of mud crab (Scylla serrata Forskal) in brackishwater pond (2021)
    In:  http://aquaticcommons.org/id/eprint/16414 | 12051 | 2015-05-09 19:46:59 | 16414 | Bangladesh Fisheries Research Institute
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    Publication Date: 2021-07-04
    Description: A culture experiment of mud crab for 84 days was conducted in earthen pond at Brackishwater Station, Bangladesh Fisheries Research Institute, Paikgacha, Khulna. The aim of the experiment was to study the effects of cowdung application on crab production and water quality. There were three treatments as without cowdung (T1), 500 kg cowdung/ha/fortnight (T2) and 750 kg cowdung/ha/fortnight (T3) with three replicates for each. The result was evaluated on the basis of growth, production, survival rate etc. The experimental months were mid-April '96 to mid-July '96. To maintain a good water quality, water was exchanged in every spring tide. The range of salinity during the experiment was 8-19 ppt. Trash fish and fresh shrimp head were used as feed on raw basis in every alternate week at a rate of 8% body weight of crab at the same time rice bran and wheat flour were used at a rate of 2% body weight as a source of carbohydrate. The production of T1, T2 and T3, were 720.35 kg, 862.16 kg and 669.19 kg/ha respectively. Though the effects of cowdung on production of crab is insignificant but in terms of production, survival rate and growth, the study suggest that the application of cowdung in addition to feed can be recommended for mud crab culture at a rate of 500 kg/ha/fortnight.
    Keywords: Aquaculture ; fertilizers ; manure ; shellfish culture ; pond culture ; pellet feeds ; water quality ; brackishwater aquaculture ; Scylla serrata
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    Effect of stocking density on the growth of Thai pangas, Pangasius sutchi (Fowler) in net cage fed on formulated diet (2021)
    In:  http://aquaticcommons.org/id/eprint/16432 | 12051 | 2015-03-27 09:24:40 | 16432 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-05
    Description: A three month long experiment was conducted to observe the effect of stocking density on the growth of Pangasius sutchi in net cages. The size of each cage was 1m³.The three stocking densities used were 40, 50 and 60 fishes/m³ and designated as treatment T1, T2 and T3 respectively. Each treatment had three replicates. All the fishes were of same age group having mean length and weight of 7.13 ± 1.37 cm and 2.46 ± 0.12 g respectively. The fish in all the net cages were fed a diet containing 34% protein. The result of the study showed that fish in the treatment T1 stocked at the rate of 40 fish/m³ resulted the best individual weight gain followed by T2 and T3 respectively. The specific growth rate (SGR) ranged between 3.51 and 3.09, the food conversion ratio (FCR) values ranged between 1.73 and 2.04 with treatment T1 resulting the lowest FCR. The protein efficiency ratios (PER) values were 1.69, 1.16 and 1.43 for treatment T1, T2 and T3 respectively. There was no significant (P〉0.05) variation among the survival rates of fish which ranged between 92 and 95%. The net productions in different treatments were 2189, 2343, and 2283g for treatment T1, T2 and T3 respectively. The result of the present study indicated that the best individual growth of P. sutchi was obtained at a density of 40 fish/m³ but the highest total production was obtained at a stocking density of 50 fish/m³ in net cages.
    Keywords: Aquaculture ; formulated diets ; stocking density ; cage culture ; proteins ; artificial feeding ; fish culture ; cages ; Pangasius sutchi
    Repository Name: AquaDocs
    Type: article
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    Format: 173-180
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    Effects of artificial feeds on production of fishes in polyculture (2021)
    In:  http://aquaticcommons.org/id/eprint/16431 | 12051 | 2015-03-27 09:25:50 | 16431 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-05
    Description: A study on the effects of artificial feeds on the growth and production of fishes in polyculture in 6 ponds along with some limnological conditions was conducted. Species of Indian and Chinese major carps (Labeo rohita, Catla catla, Cirrhinus mrigala, Hypophthalmicthys molitrix) and catfishes (Clarias batrachus, Clarias gariepinus) were stocked in 6 ponds. Stocking rate in both cases were 32044 fingerlings per hectare. Ratio of species of Rui:Catla:Mrigal:Silver carp:African Magur:Local Magur=25%:25%:5%:25%:14%:6%. Fertilization and artificial feeds were given in 3 ponds (treatment I) and only fertilization was done in other 3 ponds (treatment II). Average yield/ha/yr was 7.903 m.ton in case of fertilization and artificial feeding application and 3.374 m.ton in case of only fertilization application. Urea, TSP and cow dung were applied fortnightly at the rates of 400 kg/ha/yr, 2000 kg/ha/yr and 4000 kg/ha/yr respectively. Wheat bran, rice bran and mustard oil cake were given daily as an artificial feed in treatment I. Whereas treatment II was conducted without any artificial feed. Ratio of artificial feed was wheat bran:rice bran:oil cake=2:2:1 (by wt). Absence of artificial feed in 3 ponds under treatment II seriously affected the growth and production of fish.
    Keywords: Aquaculture ; diets ; fertilizers ; polyculture ; freshwater aquaculture ; artificial feeding ; fish culture ; Labeo rohita ; Clarias batrachus ; Cirrhinus mrigala ; Hypophthalmichthys molitrix ; Clarias gariepinus ; Catla catla ; Bangladesh
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 165-172
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    Stock dynamics of horse mackerel, megalaspis cordyla (Linnaeus) along northwest coast of India (2021)
    In:  http://aquaticcommons.org/id/eprint/16509 | 12051 | 2015-04-03 06:45:50 | 16509 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: The stock dynamics of horse mackerel, Megalaspis cordyla, along the northwest coast of India has been studied using length frequency data recorded from commercial landings and trawl catches of research-cum-training vessel M.F.V. Saraswati. The growth parameters for this species has been estimated to be L∞=54 cm and K=0.49 per annum. The natural and fishing mortality for the stock have been worked out to be 0.93 and 0.91 per annum respectively. The study indicated that the stock is fished at a safer fishing mortality level F sub(0.1), lower than F sub(msy) level.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Fisheries ; mackerel fisheries ; stock assessment ; population dynamics ; Megalaspis cordyla ; Maharashtra ; Gujarat ; India
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 115-119
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    Effect of vitamin E (α-Tocopherol) on protein content of Labeo rohita (Ham.) fry (2021)
    In:  http://aquaticcommons.org/id/eprint/16513 | 12051 | 2015-04-03 06:49:22 | 16513 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Increase in body protein concentration was noted in the fry of rohu fed vitamin E at 0.0 mg, 25 mg, 50 mg, 75 mg 100 mg, 150 mg, 200 mg, 300 mg, and 400 mg/kg of formulated diet. The protein content of fry was found to be significantly different between the different levels of vitamin E. It was found to be maximum (18.7%) in the case of vitamin E at 75 mg/kg diet followed by vitamin E at 100 mg/kg diet. On increasing of vitamin E above 100 mg per kilogram diet there was further decline in the protein content of the fry. The protein increase, from the initial value (12.5%), were recorded to be 14.4%, control; 21.6%, 25 mg level; 31.2%, 50 mg level; 49.6%, 75 mg level; 45.6%, 100 mg level; 14.4%, 150 mg level; 28% 200 mg level; 29.6%, 300 mg level and 13.6% for 400 mg level in different experimental groups.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; vitamin deficiencies ; freshwater fish ; Labeo rohita ; Bombay ; Maharashtra ; India
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 139-143
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    Integrated wastewater aquaculture (2021)
    In:  http://aquaticcommons.org/id/eprint/16520 | 12051 | 2015-04-03 07:00:21 | 16520 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Utilization of wastewater in fish culture is based on nutrient recycling, which enhances primary productivity, planktonic biomass, macrophytes and benthic organisms which determine fish production. Production of fishes could be enhanced to 10 ton/ha through wastewater recycling by judicial stock manipulation and management. The fallow lands around a sewage fish farm could be utilized for agri-horticultural production by recycling both sludge and sewage water, resulting in a total agro production of about 110 ton/ha through rotational vegetable cropping. The potential for additional production of vegetables not only enhances revenue but also creates employment.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; integrated aquaculture systems ; water quality ; aquaculture effluents ; wastewater facilities ; wastewater utilization ; wastewater aquaculture ; aquaculture techniques ; India
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 57-62
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    Role of fisheries extension officers in FFDA at Balasore (2021)
    In:  http://aquaticcommons.org/id/eprint/16528 | 12051 | 2015-04-03 07:10:19 | 16528 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: The first FFDA in Orissa state was established in the year 1976. The study was conducted in Balasore district of the State. The findings revealed that all of the FEOs were not well qualified but trained and experienced. The duration of training obtained varied from 3 to 10 months. An FEO has a large area under his jurisdiction. Cycle was used by most of the FEOs to visit the fish farmers which resulted in infrequent visits. The FEOs were not satisfied with the working conditions, promotion avenues and conveyance facilities. There was interference of political bodies in leasing out ponds. The amount of loan sanctioned was not adequate to start fish farming. They also revealed that marketing aspects were totally neglected by the FFDA.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Fisheries ; Management ; fisheries extention agencies ; Fish Farmers Development Agency ; aquaculture development ; fisheries development ; Basalore ; Orissa ; India
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    Format: application/pdf
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    On the trend of prawn catches in bottom trawls in inshore waters off Kakinada (Andhra Pradesh) (2021)
    In:  http://aquaticcommons.org/id/eprint/16471 | 12051 | 2015-03-28 14:20:48 | 16471 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-05
    Description: From the results of fishing operations during 3 years (from August 1963 to July 1966) attempts were made to study the extent of availability of prawns for bottom trawls. It was found that prawns formed 22.5% of the total catch on an average of the catch rate of 12.3 kg per trawling hour. The prawns were found to be abundant during two periods from November to February and again from April to July. The depth range of 11-15 m yielded better catch rate with best frequency of the optimum catch per hour.
    Keywords: Fisheries ; fishing boats ; fishing gears ; prawns fishery ; trawl nets ; catching efforts ; Kakinada ; Andrea Pradesh ; India
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    Format: application/pdf
    Format: application/pdf
    Format: 33-37
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    Underwater warp tension meter (2021)
    In:  http://aquaticcommons.org/id/eprint/16474 | 12051 | 2015-03-28 14:25:25 | 16474 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-05
    Description: A self-contained electronic solid-state instrument capable of measuring the tension between the different parts of a trawl net in operation, has been designed and developed for the measurement in the range 0 to 300 kg with an accuracy of ± 2 kg. The instrument is useful for measuring the resistance to motion of various accessories of a trawl net. It consists of an inductive type underwater tension transducer and an electronic indicating meter kept on board the vessel, both the units being connected by electric cable.
    Keywords: Fisheries ; dynamometers ; line tensione meters ; otter boards ; fish trawling ; India
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 48-51
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    On the results of preliminary fishing trials with shark long lines in Veraval waters (2021)
    In:  http://aquaticcommons.org/id/eprint/16488 | 12051 | 2015-11-02 20:05:49 | 16488 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-06
    Description: Experimental fishing operations with shark long lines were conducted in the sea off Veraval with a view to studying their efficiency and gathering information on the available resources of sharks to be used for planning the future gear investigations. The trials were undertaken in 1967, employing departmental fishing vessel "Fishtech No. IV" (10.9 m O.L. and 48 H.P. engine). A total of 5525 hooks were employed and 242 sharks weighing 8629 kg were landed. Data on composition of catch, weight of fishes landed, effectiveness of various baits in capture of different species of sharks and effectiveness of gear including its catch efficiency in this area were compiled. Bait preference was also observed in certain species of sharks caught. Chirocentrus dorab proved to be the cheapest and most effective bait in capture of all the three varieties of sharks landed.
    Description: Ramarao, S.V.S. sometimes cited as Rama Rao, S.V.S.
    Keywords: Fisheries ; fishing trials ; catch efficiency ; fishing gears ; sharks ; Veraval ; Gujarat ; India
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    Format: application/pdf
    Format: 150-157
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    Belly depth studies for shrimp trawls - Part II (2021)
    In:  http://aquaticcommons.org/id/eprint/16492 | 12051 | 2015-03-27 08:53:29 | 16492 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-06
    Description: The paper details further experiments conducted for a reduction in the depth of belly of a 13.69 m (45') four seam shrimp trawl net. The investigations have given conclusive evidence that the optimum depth of belly for this particular trawl design should be 70 meshes.
    Description: Belly depth studies for shrimp trawls – Part I. IPFC occasional paper, 67/6.
    Keywords: Fisheries ; shrimp fishery ; trawl nets ; depth reduction ; catching efficiency ; India
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    Format: application/pdf
    Format: 177-179
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    Hydrobiological features of the Kerala backwaters during premonsoon and monsoon months (2021)
    In:  http://aquaticcommons.org/id/eprint/16495 | 12051 | 2015-03-27 08:59:16 | 16495 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-06
    Description: The hydrobiological features like temperature, salinity,phytoplankton, zooplankton and bottom fauna at twelve stations in the Vembanad lake during pre-monsoon and monsoon months were studied and the results communicated in this paper.
    Keywords: Ecology ; backwaters ; hydrography ; flora ; fauna ; Willingdon island ; Vembanad lake ; Kerala ; India
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 190-194
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    Changes of enzymatic activity during larval development of carp, Catla catla (Ham.) (2021)
    In:  http://aquaticcommons.org/id/eprint/16507 | 12051 | 2015-04-03 06:44:13 | 16507 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Quantitative assays of trypsin, amylase and alkaline phosphatases were made in relation to age and food during the larval development of the Indian major carp Catla catla. The responses of all the test enzymes to age and food were identical. No enzymes were detected from the fertilized eggs. Detectable amount of enzymes were first observed in the first day old hatchlings. All the test enzymes in the group fed normal feed tended to rise gradually with advancement of age till day 22 after which an asymptotic level was attained. Absence of food throughout the rearing period caused the enzymatic activity of the larva to remain at the lowest level throughout. When starvation was followed by feeding, enzymatic activity in the former group was consistently higher than that of latter, suggesting that feeding activity was primarily responsible in maintaining the enzymatic activity of carp larva. The enzymatic activity of zooplankton was significantly higher than carp larva till day 6 to 12 after which the latter exceeded the former implying that carp larva during development utilizes the exogenous enzymes of zooplankton.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; enzymes ; freshwater fish ; Catla catla
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 97-106
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    Studies on the effect of compounded feeds on the growth of juvenile Banana prawn Penaeus merguiensis (2021)
    In:  http://aquaticcommons.org/id/eprint/16534 | 12051 | 2015-04-03 07:15:39 | 16534 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Laboratory experiments were conducted to determine the effect of compounded feeds on growth of juveniles (3 to 4 cm) of the Banana prawn Penaeus merguiensis. In all, seven diets were prepared with different combinations of locally available ingredients. Diascure, a local tuber was used as source of carbohydrate and vitamin mineral mixture (1%) was used in all the diets. The results indicated that diets with groundnut cake (diet 2, 3, 5 and 7) produced better survival and growth. In diets 4 and 6 growth was good but survival was very poor. Amongst all the diets, diet 7 produced significantly better growth, survival and food conversion ratio.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; Banana prawn ; Penaeus merguiensis ; growth rate ; feeding experiments ; freshwater aquaculture ; Maharashtra ; India
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 17-24
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    A record production from an integrated farming system utilising sewage enriched water (2021)
    In:  http://aquaticcommons.org/id/eprint/16536 | 12051 | 2015-04-08 19:01:46 | 16536 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: The results of experiments conducted on a pond dyke (655m²) in the Wastewater Aquaculture Division of the Central Institute of Freshwater Aquaculture, Rahara, during 1992-93 for maximising production through optimum utilisation of resources are communicated. Round the year intensive cultivation of okra (Abelmoschus esculentus), amaranth (Amaranthus gangeticus and A. viridus), water-bind weed (Ipomea aquatica), Indian spinach (Basella rubra), radish (Raphanus sativum), amaranth (Amaranthus viridis), cauliflower (Brassica oleracia var. votrytis), cabbage (Brassica oleracia var. capitota) and papaya (Carica papaya) was undertaken using the treated sewage water from fish ponds for irrigation. The pond dyke yielded 5,626.5 kg vegetable which worked out to 85.9 tons per ha per year. Multiple cropping with these vegetables excluding papaya on a 460 m² dyke recorded a production of 4,926.5 kg at the rate of 107.1t per ha/yr. An improved yearly net return of about 35% over investment could be achieved through the selection of highly productive and pest resistant vegetable crops of longer duration for integration into the system. Introduction of this type of integrated farming would enhance the overall productivity and returns from farming.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; Abelmoschus esculentus ; Amaranthus gangeticus ; Amaranthus viridus ; Ipomea aquatica ; Basella rubra ; Raphanus sativum ; Brassica oleracia ; Carica papaya ; polyculture experiments ; integrated aquaculture system ; vegetable cultivation ; sewage water ; India
    Repository Name: AquaDocs
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    Economic feasibility of composite fish culture in leased-in village tanks of Kanyakumari district: an invesment analysis (2021)
    In:  http://aquaticcommons.org/id/eprint/16547 | 12051 | 2015-04-03 07:25:15 | 16547 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Kanyakumari district belonging to the high rainfall zone has resource advantages for composite fish culture in the leased-in village tanks. There are more than 400 fish farmers operating in leased-in tanks following composite fish culture under the FFDA programme. To estimate the economic feasibility and financial viability of the enterprise, the present study was taken up. 38 fish farmers selected from the district provided the necessary information like capital investment, costs and return and constraints. The data collected were analysed and a farm nearest to the average farm situation was taken as the representative farm. Investment criteria like PayBack Period (PBP), Simple Rate of Returns (SRR), Net Present Value (NPV) and Benefit Cost Ratio (BCR) were estimated taking into account a period of 10 years, the period for which the village tanks are leased-out to fish farmers under the FFDA programme. The analysis indicated the profitability of composite fish culture in village tanks in the district and the results are discussed with recommendations.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; freshwater fish culture ; economic feasibility ; cost analysis ; Kanyakumari ; Tamil Nadu ; India
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    Format: application/pdf
    Format: application/pdf
    Format: 115-119
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    Dried fish cakes with improved texture (2021)
    In:  http://aquaticcommons.org/id/eprint/16549 | 12051 | 2015-11-04 15:07:23 | 16549 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: To overcome the problem of underutilization of marine by-catches, Basu et al. (1985) developed fish cube from minced fish meat. Although the product was acceptable, it had little rubbery texture. An attempt was made to improve the texture of the cake by several methods. It was found that 5% tapioca starch along with 3% texturised soybean protein improved the texture and juiciness of the rehydrated product. Preheating of the minced meat at 70°C for 30 minutes also improved the texture appreciably. It was also found that mixing of the ingredients at low speed (less than 100 rpm) in a dough mixer gave the best texture, higher speed and sharp blades leading to rubbery texture. The dehydrated product (moisture 19-20%) thus prepared had a shelf life of six months at ambient temperature.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Fisheries ; minced fish meat ; fish cubes ; dried fish cakes ; rehydration process ; processing fishery products ; India
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 127-131
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    Present status of the Himalayan mahseer Tor putitora, an endangered species in Nainital lakes of Uttar Pradesh (2021)
    In:  http://aquaticcommons.org/id/eprint/16545 | 12051 | 2015-04-03 07:23:39 | 16545 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: The present status of the Himalayan mahseer in the three lakes of Nainital district of Uttar Pradesh is discussed based on the catch data from 1983-84 to 1992-93. Yield of mahseer have shown a gradual decline in the recent years. Besides catch statistics, market arrivals and availability of fish to anglers have also shown a marked decline. Tor putitora is being considered as an endangered fish. It is therefore necessary to repopulate the lakes with the mahseer by adopting better management practices like stocking the lakes continually with sufficient mahseer fingerlings and enforce strict conservation measures to stop killing of juveniles.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Fisheries ; Tor putitora ; Himalayan mahseers ; rare species ; catch statistics ; fingerlings ; freshwater fish ; Nainital ; Uttar Pradesh ; India
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 99-103
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    Substitution of Artemia with Brachionus in different ratios during larval rearing of Macrobrachium rosenbergii and evaluation of their feed efficacy (2021)
    In:  http://aquaticcommons.org/id/eprint/16561 | 12051 | 2015-04-08 18:58:52 | 16561 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Larval growth during stage I-VIII was studied in Macrobrachium rosenbergii. Duration in moult periodicity were recorded-during larval development period, larvae were fed with Brachionus (grown on Baker's yeast and also Brachinous raised through organic manuring in outdoor culture containers). The performance of the feed was evaluated through substitution of Brachionus in the feeding protocol, in lieu of Artemia 1st instar. The Artemia, Brachionus substitution ratio of 75:25 was found to be most efficient. The study also indicates that the comparative growth rate of Brachionus plicatilis is higher in manure loaded tanks than with Baker's yeast. Growth rate "Y'' in culture tank being 0.245 and 0.112 and corresponding duplicating time (Td) too was found to be 2.855 and 6.365 respectively in tanks manured/enriched with pig manure.
    Keywords: Aquaculture ; feeding efficacy ; substitution ratio ; Artemia ; Brachionus plicatilis ; Macrobrachium rosenbergii
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    Format: application/pdf
    Format: application/pdf
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    Mortality estimates of Indian ribbon fish Trichiurus lepturus off Maharashtra coast (2021)
    In:  http://aquaticcommons.org/id/eprint/16569 | 12051 | 2015-04-08 18:56:24 | 16569 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: In view of its new found status in export market, ribbon fish resources need to be continually monitored. Mortality, one of the important parameter is reported for the Indian ribbon fish Trichiurus lepturus Linnaeus in the present communication. The average annual instantaneous rate of total (Z), natural (M) and fishing mortality coefficient (F) were estimated as 2.66, 0.77 and 1.89 respectively for the 1995 to 1997 period. The exploitation rate (U) and exploitation ratio (E) were estimated as 0.66 and 0.71 respectively, which is beyond the optimum thrust reduction in the fishing effort for this stock along the Maharashtra coast is necessary.
    Keywords: Fisheries ; fishing mortality ; exploitation rate ; Trichiunus lepturus ; ribbon fishes ; Maharashtra ; India
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    Format: application/pdf
    Format: 23-29
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    Effect of Lates calcarifer seed stocking on the survival and production of Indian major carps reared in a freshwater coastal pond in Konkan region (2021)
    In:  http://aquaticcommons.org/id/eprint/16574 | 12051 | 2015-04-08 18:55:26 | 16574 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: The experiment indicated feasibility of culturing Indian major carps seed with Lates calcarifer, if the size of Indian major carps is larger. In the present investigation the average growths of Catla catla, Labeo rohita and Cirrhinus mrigala are recorded as 1193, 1120 and 821 g, respectively, during the year 1997-98, 1998-99 and 1999-2000 in 7.5 months. Complete harvesting of L. calcarifer is essential before stocking of new seed. The average growth of L. calcarifer was recorded as about 670 g during the above period. About 5000 numbers of Indian major carps fry per hectare can be stocked under the present culture system
    Keywords: Aquaculture ; Lates calcarifer ; feeding habits ; survival rate ; growth rate ; freshwater aquaculture ; polyculture ; India
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 73-78
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    Vertical distribution of molluscs in the intertidal area in and around Mumbai, India (2021)
    In:  http://aquaticcommons.org/id/eprint/16577 | 12051 | 2015-04-08 18:54:32 | 16577 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-07
    Description: Vertical distribution of intertidal molluscs in and around Mumbai had been studied. Each species has an upper and lower limit of distribution along the vertical intertidal gradient and are concentrated at particular levels or zones where they find optimum living conditions. Zonation of the intertidal area with reference to molluscs at rocky shores of TIFR, Bandstand and NCPA has similarities. However, there is no similarity in zonation among rocky, sandy and muddy shores. Rocky intertidal zones are more diverse and dense in terms of molluscs. The mid and lower littoral zones have rich diversity. The upper littoral zone at some sites, especially Girgaon chowpatty is totally devoid of molluscs due to anthropogenic activities. Gafrarium divaricatum, Nerita oryzarum, N. polita and Neritina crepidularia have established themselves in all three marked zones, indicating their power to adjust with the wide fluctuations in surrounding environmental conditions.
    Keywords: Ecology ; molluscs ; Gafrarium divaricatum ; Nerita oryzarum ; Nerita polita ; Neritina crepidularia ; intertidal zones ; zonation ; pollution ; dominance ; Mumbai ; Maharashtra ; India
    Repository Name: AquaDocs
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    Stock assessment and biology of Johnius glaucus (Day) off the northwest coast of India (2021)
    In:  http://aquaticcommons.org/id/eprint/16516 | 12051 | 2015-04-03 06:52:17 | 16516 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: The stock size and biology of Johnius glaucus (Day) resource off the northwest coast of India were studied for 1982-83 and 1983-84. The total length at the end of 6, 12, 18, 24 and 26 months was 121 mm, 183 mm, 237 mm, 261 mm and 264 mm respectively. The length growth parameters were: L∞=300 mm, K=0.0807 (monthly) and t(sub)0=-0.51 month. The weight growth parameters were: W∞= 317g, K=0.0762 (monthly) and t(sub)0= -0.41 month. The exploited stock mainly composed of 1/2 + and 1+ age groups. The annual Z, M and F were 2.34, 1.49 and 0.85 respectively. The l(sub)b, t(sub)b, l(sub)r, t(sub)r and selection factor K were 155 mm, 0.75 year, 65 mm, 0.25 year and 3.875 respectively. The Yw/R was optimum at the exploitation rate (E) of 0.75 and coded mesh size of 37 mm. The total stock for 1982-83 and 1983-84 was 14,624 and 26,190 tons respectively. The standing stock of 1982-83 and 1983-84 was 5,645 and 10,110 tons respectively. The MSY for 1982-83 and 1983-84 was 6,623 and 11,788 tons respectively. The F and Z were lowest in 0+ age group and highest in 1+ age group.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Fisheries ; stock assessment ; population dynamics ; Johnius glaucus ; sciaenids ; India
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    Relation of nutrition and salinity to growth in black mollies (2021)
    In:  http://aquaticcommons.org/id/eprint/16521 | 12051 | 2015-04-03 07:00:59 | 16521 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Optimum growth, impaired growth and mortality hi black molly are studied in diluted sea water, sea water and also by introducing laboratory prepared diets. Rapid acclimation in conjunction with enhanced growth capacity was attained at 2‰ concentration of common salt in water, and 2‰ and 5‰ dilutions of sea water. 22‰ protein content in the diet was found to be adequate for growth and fertility of fishes acclimated at a salinity of 2‰. Higher protein content and other nutritive elements were necessary for fishes acclimated at 5‰ and 14‰. Fertility was increased in sea-water dilutions rather than in common salt-water dilutions.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; black mollies ; Poecilia sphenops ; growth rate ; fecundity rate ; salinity levels ; osmoregulatory processes
    Repository Name: AquaDocs
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  • 88
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    Population dynamics and stock assessment of the spider prawn, Nematopalaemon tenuipes Henderson along the Maharashtra coast (2021)
    In:  http://aquaticcommons.org/id/eprint/16515 | 12051 | 2015-04-03 06:51:16 | 16515 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Nematopalaemon tenuipes is an important component of non-penaeid prawn resources of the northwest coast of India. During 1979-82 period, it contributed 29.9% to the non-penaeid prawn and 5.6% to the total fish landings of Maharashtra. The von Bertalanffy growth parameter L∞, K and t(sub)0 were 77.38 mm, 1.31 and -0.02 year for the males while for the females these parameters were respectively 87.23 mm, 1.30 and -0.01 year. The natural mortality coefficient (M) was 3.54 and 3.52 and the average total mortality coefficient (Z) during the period was 9.09 and 7.79 for the males and females respectively. With the exploitation rates of 0.61 and 0.55 for the males and females during the period, the total stock of the species was 26,270 tonnes and the standing stock was 3,418 tonnes. The maximum sustainable yield (MSY) of the species under the prevailing fishing conditions was 15,744 tonnes which is close to the average yield of 14,726 tonnes from the nets. Hence further increase in effort is not suggested.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Fisheries ; population dynamics ; stock assessment ; spider prawns ; Nematopalaemon tenuipes ; Maharashtra ; India
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  • 89
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    Macrobenthos off Mahim (Bombay), west coast of India in relation to coastal pollution and aquaculture (2021)
    In:  http://aquaticcommons.org/id/eprint/16519 | 12051 | 2015-04-03 06:59:52 | 16519 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Deterioration of water quality clearly indicated a moderate to severe coastal pollution around Mahim whereas a relatively healthy marine environment towards offshore was noticed. Foraminifera, polychaetes, crustaceans and pelecypods were the dominant macro faunal groups encountered in the area. The occasional inhabitants like pennatularians, nemertines, sipunculids, ophiuroids and fish larvae were mostly restricted to offshore regions. Biomass and population density of macro fauna were moderate and showed fluctuating trend. Similarity coefficients of foraminifera (0.89) and polychaetes (0.81) were high for offshore unpolluted stations (3 and 4) as compared to near shore coastal stations (1 and 2). Faunal diversity was relatively more in unpolluted zone. The diversity index (H) was more at station 3 for polychaetes (1.39) and at station 4 for foraminifers (0.54). In general, biomass was high during post monsoon excepting station 1 which was invariably under severe pollution stress throughout the study period. Foraminifera were abundant at sandy bottom while polychaetes preferred muddy (clayey silt) bottom. A noticeable ecological modification associated with faunal abundance and diversity were related to deteriorating marine water quality due to anthropogenic waste disposals. The prevailing water quality around Mahim is unsuitable for any kind of culture practices and also for harvesting economically important marine species.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Pollution ; stock assessment ; aquatic pollution ; pollution effects ; macrofauna ; faunal diversity ; foraminifera ; polychaetes ; crustaceans ; pelecypods ; Mahim ; Bombay ; Maharashtra ; India
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    Social status and problems of fishing community at Allahabad (2021)
    In:  http://aquaticcommons.org/id/eprint/16523 | 12051 | 2015-04-03 07:05:59 | 16523 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: The paper highlights social status and socio-economic problems of fishermen living along the Ganga and the Yamuna at Allahabad. Since the problems of fishermen varied with respect to category (with owned boat and with hired boat) and location, significance of this variation was tested by x²-test. The paper further emphasises on an intensive study of fishermen community to have in depth analysis of their problems and to suggest remedial measures for their upliftment.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Fisheries ; Sociology ; fishermen communities ; fishing communities ; local communities ; sociological aspects ; socio-economic problems ; Gange River ; Yamuna River ; Allahabad ; Uttar Pradesh ; India
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  • 91
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    Aquacrops of Darbhanga District in north Bihar and their commercial significance (2021)
    In:  http://aquaticcommons.org/id/eprint/16526 | 12051 | 2015-04-03 07:08:46 | 16526 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Darbhanga district in North Bihar is characterised by thick alluvial soil, moderately good rainfall, high humidity, ample sunshine and numerous water resources in the form of perennial rivers, tributaries, streams, lakes, ponds, pools and puddles. The aquacrops of this district include several species of commercially important fishes, aquatic cash crops such as makhana (Euryale ferox), singhara (Trapa spp.), lotus, lilly, Khubi etc. and molluscs. This paper highlights the commercial significance of these aquacrops and offers suggestions for their sustained development.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; freshwater fishes ; commercial species ; integrated aquaculture systems ; aquaculture enterprises ; aquatic plants ; seeds ; Darbhanga ; Bihar ; India
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  • 92
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    Stock assessment of sin croaker Johnieops sina (Cuvier) from Bombay waters (2021)
    In:  http://aquaticcommons.org/id/eprint/16532 | 12051 | 2015-04-03 07:15:01 | 16532 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Growth, mortality and stock parameters of Johnieops sina (Cuvier) based on the data collected from 1989 to 1994 from Sassoon Dock and New Ferry Wharf landing centres of Greater Bombay has been discussed here. The von Bertallanffy's growth parameters for this species were estimated as follows, L∞= 266 mm, K=0.91 per year and W∞=193 g. This species grows to 159 and 223 mm at the end of first and second year of its life. The mortality parameters estimated were Z=6.17, M=2. 03 and F=4.14. The E and U were calculated as 0.62 and 0.63 respectively. Length cohort and Thompson Bell analyses show that there is no decline in the catches at the present level of fishing. But even by doubling the efforts the catches can go up by only 9.4 % indicating that the fishing efforts is not economical and proportional to the increase in yield.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Fisheries ; Johnieops sina ; sin croaker ; stock assessment ; Bombay ; Maharashtra ; India
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  • 93
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    Dietary cholesterol requirement of larvae and postlarvae of the prawn Penaeus indicus (H. Milne Edwards) (2021)
    In:  http://aquaticcommons.org/id/eprint/16539 | 12051 | 2015-04-03 07:20:17 | 16539 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Two sets of experiments were conducted to determine the dietary cholesterol requirement of larvae and postlarvae 1-10 of Penaeus indicus. Seven approximately isocaloric and isonitrogenous purified experimental diets were tried with graded levels of cholesterol ranging from 0 to 4%. The control feed for larvae and postlarvae 1-10 were phytoplankton and compounded feed NPCL-17, developed by CMFRI, Cochin respectively. Result of these experiments indicates that cholesterol is an essential nutrient in the diet of larvae and postlarvae 1-10. Survival and growth of larvae and postlarvae 1-10 were greatly affected by cholesterol deficiency in the diet. The optimal cholesterol requirement for larvae appeared to be 0.5% of the diet, while it was higher for postlarvae where inclusion of cholesterol at a level of 2% in the diet gave higher growth.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; Penaeus indicus ; larvae ; feeding experiments ; diets ; cholesterol deficiency ; survival rate ; growth rate
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  • 94
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    Use of dopamine antagonists on induced spawning of Indian major carps (2021)
    In:  http://aquaticcommons.org/id/eprint/16540 | 12051 | 2015-04-03 07:21:03 | 16540 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: To test the efficacy of the technique of using dopamine-antagonists with pituitary extracts, experiments were conducted in July/August '93, at the CIFE Fresh water Fish Farm, Powerkheda. In all, 35 sets (1 female x 2 male in each set) were tried individually. 19 sets were treated with Domperidone (DOM) and Carp Pituitary Extract (CPE) and they constituted the experimental sets, while the rest 16 were treated with CPE and formed the control sets. The breeding, complete ovulation and hatching was 84.2%, 87.5% and 85.7%, respectively in the experimental sets whereas it was 93.7%, 60% and 72.7%, respectively in case of control sets. Experimental sets yielded 1.20 lakh spawn/kg body wt. (female) as compared to 0.83 lakh spawn kg body wt. (female) received from control sets on average basis. When DOM was used at 50-60% there was 100% breeding success but when increased to 70%, breeding rate fell to 66%. In mass breeding of Catla in the circular hatchery DOM mixed with CPE in 50:50 ratio gave excellent results.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; Indian major carps ; spawning ; ovulation ; induced breeding ; experiments ; Domperidone ; Carp Pituitary Extract ; aquaculture techniques ; India
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    Breeding performance of Macrobrachium rosenbergii in captivity (2021)
    In:  http://aquaticcommons.org/id/eprint/16543 | 12051 | 2015-04-03 07:22:33 | 16543 | Indian Fisheries Association
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    Publication Date: 2021-07-06
    Description: The key factor in success of a Macrobrachium hatchery is to yield maximum number of larvae with minimum number of brooders. Suitable environmental conditions were provided and the breeding performance of females of M. rosenbergii was observed. A total number of 140 females brought from wild were used for this purpose. Each female was tagged and given a code number which made it possible to record the gestation period, interbreed period, number of breeding and larval yield of individual female during each breeding. Females were found to breed six times during the ten months duration. Of the total females studied, 99.12 % bred once, while only 2.16 % females bred six times in a total span of ten months. The average number of larvae decreased successively from first to fourth breeding. The average interbrood period was minimum between the first and second breeding and maximum between the fourth and fifth breeding. The highest average larval yield of 25,428 was recorded in the first breeding, the lowest of 4,596 in the fourth breeding. The possible reasons for variations in interbrood period and larval yield are discussed.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; Biology ; Macrobrachium rosenbergii ; prawns ; breeding performances ; captivity
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    Prospects of integration of aquaculture with animal husbandry and land crop culture in Tripura State (2021)
    In:  http://aquaticcommons.org/id/eprint/16537 | 12051 | 2015-04-03 07:19:00 | 16537 | Indian Fisheries Association
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    Publication Date: 2021-07-06
    Description: Tripura is a densely populated small state with meagre water resources. 47.51% of the population is constituted by socio-economically backward, illiterate, orthodox, tribal and scheduled castes. Some of them are nomad and a majority of the rest of the population is refugees from Bangladesh, but almost 100% is fish eater. Settlement of tribes in villages, provision of nutritious food and employment therefore calls for proper utilization of every resource they have. The State is poor in water resources but recently has created 21,636.23 ha of new water area. Tripura is rich in pig population, besides poultry birds. Paddy is the main crop cultivated in arable lands. An integration of livestock raising and land based agriculture with pisciculture practices around mini barrages will help in solving the problems to a great extent. The paper is an attempt to outline the prospects of integration of aquaculture with animal husbandry and land based crop culture in Tripura State.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Aquaculture ; polyculture ; integrated farming systems ; animal husbandry ; crop culture ; Tripura ; India
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  • 97
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    Effect of chloral hydrate on metabolic rate of Labeo rohita (Ham) and Poecilia reticulata (Peters) (2021)
    In:  http://aquaticcommons.org/id/eprint/16548 | 12051 | 2015-04-03 07:25:41 | 16548 | Indian Fisheries Association
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    Publication Date: 2021-07-06
    Description: Comparative impact of chloral hydrate anaesthesia on the metabolic rate of Indian major carp Labeo rohita and larvivorous fish Poecilia reticulata was assessed. Observation on the Oxygen Consumption Rate (OCR) revealed that in common guppies OCR was substantially low (1.105 and 1.097 mg/g/hr) at 0.1 and 0.25 g/l concentrations of chloral hydrate as against OCR of 1.487 mg/g/hr in the control. Fry of L. rohita in group showed lower metabolic rates in the control as well as treated conditions as compared to the individuals of this fish. This may be due to sympathetic psychophysiological reflex of grouped fish. Higher dose of chloral hydrate (0.25 g/l) also caused higher OCR probably due to distress. Application of chloral hydrate also favoured lesser release of metabolic wastes (ammonia and carbon dioxide). There was significant positive correlation between time and oxygen consumption, whereas, for time and OCR this relationship was negative. Regression of chloral hydrate doses for OCR and time has also been calculated.
    Description: Paper presented at the National Symposium on Aquacrops, 16-18 November 1994, Versova, Bombay (India)
    Keywords: Fisheries ; Labeo rohita ; Poecilia reticulata ; oxygen consumption rate ; chloral hydrate ; metabolic rate ; India
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    Some aspects of the biology of Otolithes cuvieri (Trewavas) and Johnius glaucus (Day) from Veraval (2021)
    In:  http://aquaticcommons.org/id/eprint/16557 | 12051 | 2015-04-08 19:00:58 | 16557 | Indian Fisheries Association
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    Publication Date: 2021-07-06
    Description: The length-weight relationship in O. cuvieri and J. glaucus can be described by the equations log W=-5.27997+3.13225 log L and log W=-4.93431+3.02556 log L respectively. The length at first maturity in O. cuvieri is estimated as 256 mm and in J. glaucus as 180 mm. Empty stomachs occurred in high percentage in both the species. A study on composition of food items revealed that O. cuvieri feeds on a variety of organisms while J. glaucus a selective feeder.
    Keywords: Biology ; length-weight relationship ; feeding habits ; maturation ; Veraval ; Gujarat ; India
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  • 99
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    Population dynamics of penaeid prawn Penaeus merguiensis off Mumbai coast (2021)
    In:  http://aquaticcommons.org/id/eprint/16564 | 12051 | 2015-04-08 18:58:10 | 16564 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Stock dynamics of Penaeus merguiensis was studied using length composition data collected separately for males and females during the period 1995-1998, at New Ferry Warf landing, centre in Greater Mumbai. Food and feeding, sex ratio, fecundity and length-weight relationships were worked out on a representative sub-sample. Asymptotic length (Loo) and growth coefficient (K) were estimated to be 220 mm and 1.80 per annum respectively for males. These parameters were respectively 281 mm and 1. 72 per annum in the case of females. The instantaneous rate of total mortality coefficient (Z) was found to be 9.79 and 7.44 per annum for males and females respectively. The annual natural mortality coefficient (M) was estimated to be 2.80 for males and 2.60 for females. As the exploitation ratio exceeded 0.5 in the case of both the males and females, the study suggests the necessity for reduction in fishing pressure in order to achieve Maximum Sustainable Yield (MSY).
    Keywords: Fisheries ; Penaeus merguiensis ; banana shrimps ; mortality ; population dynamic ; stock assessment ; maximum sustainable yield ; Mumbai ; Maharashtra ; India
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    Comparative account of growth rate of body parts with total length in adult Puntius sarana (Ham.) (2021)
    In:  http://aquaticcommons.org/id/eprint/16570 | 12051 | 2015-04-08 18:56:11 | 16570 | Indian Fisheries Association
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    Publication Date: 2021-07-06
    Description: The present study on growth rate of different body parts in relation to total length, in the male and female Puntius sarana (Ham.) did not show any significant heterogeneity except in snout length (p.01). The growth rate of snout length was found to be higher in females (b=0.0377) than in males (b=0.0266). Since the growth rate of most of the body parts was found to be homogeneous in both the sexes, the common regression co-efficient "b" was calculated on pooled data to represent the growth rate of different body parts against total length, the linearity of regression lines indicated isometric growth.
    Keywords: Fisheries ; Puntius sarana ; growth rate ; morphometry ; teleostei ; freshwater fishes ; India
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