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  • People  (1,126)
  • Surface physics, nanoscale physics, low-dimensional systems  (1,077)
  • Fisheries
  • Organic Chemistry
  • 2015-2019  (2,224)
  • 2017  (2,224)
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  • 2015-2019  (2,224)
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  • 1
    Publication Date: 2021-05-19
    Description: Status of fish consumption was analyzed by completing the 295 questionnaires in all 22 metropolitan regions of Tehran from different households in 2008. After reviewing the descriptive and statistics analysis along with the non-parametric statistics, the fish consumption per capita was extracted through formulas. The average and mode of purchasing of each household occurs 11 times per year with 5.1 Kg in each time. Considering the higher fish consumption growth rate in Iran, the sequence of interest in all kinds of protein is as follows: poultry, mutton, beef, Trout, wild fishes and Chinese carps. The highest interest of households to buy fish more than other protein resources is due to the nutrient value of it. An average of 33.2% purchasing is dedicated to the farmed fish. 59% of purchasers are interested to buy packed up fish products and pay attention to the label of nutrient values on the product package. Fish consumption per capita is 13.3 Kg, which is divided to 6.4 kg for farmed fishes, 5.8 Kg for wild fishes and 1.1 Kg for canned fish. The higher consumption per capita of Tehran citizens in comparison with other people from other cities, who are living in Tehran, is because of their tendency and freshness of farmed fishes. In contrast, the consumption of canned and wild fishes among people of littoral regions who live in Tehran is higher than others.
    Description: Published
    Keywords: Fish consumption per capita ; Fish ; Consumption ; Per capita ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.546-556
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  • 2
    Publication Date: 2021-05-19
    Description: The purpose of the present research was to identify and rank the effective environmental (background) indices on OE process in Mazandaran Fisheries Organization. In terms of data collection, the method used in this study was the descriptive-survey method and in terms of research purposes, it was an applied research. Statistical population included experts and leading experts of Mazandaran fisheries organization in 2014. After literature review, the effective environmental (background) indices on OE were identified. Data were collected using Delphi and paired comparisons questionnaires, and analyzed using fuzzy Delphi method and FAHP. The results showed that the effective environmental (background) indices on OE, in order of priority, were the economic environments, legal-political environment, social-cultural environment, technological environment, administrative environment and international environment.
    Description: Published
    Keywords: Development ; Economic ; Environmental ; Organizational Entrepreneurship ; Fuzzy Delphi ; Fuzzy AHP ; Mazandaran Fisheries Organization ; Entrepreneurship ; Fisheries ; Explanation ; Ranking ; Factors
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.125-138
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  • 3
    Publication Date: 2021-05-19
    Description: Creating a database of affiliated laboratories of the institute is organized with the aim of integrating information related to laboratories of research centers and their subsidiaries. The main objective of conducting this project in this stage is to upgrade it, establish and running one software system based on up-to-date technology of networking. For this purpose organizing the centers database, a periodic report on various aspects can be done which help for implementing appropriate monitoring and management .Among the sectors that are designed and upgraded for this system include : Portal, bank of information, advanced possibilities for inputting data, searching and reporting on laboratory.The advantages of this precise and updated reports can be collected easily from the general information of research institutes and centers, reports of the number of lab experts with different educational levels in affiliated centers, awareness of numbers and status of the chemical materials in the laboratories of each center, and the significant and important point is about economizing equipment, chemical materials and on time calibration.
    Description: Published
    Keywords: Bank of information ; Laboratories ; Research institute ; Network ; Data ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.149-153
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  • 4
    Publication Date: 2021-05-19
    Description: Caspian Sea, Persian Gulf and the natural aquatic environment, made Iran’s geo-strategic and socioeconomic situation of the fisheries and aquaculture sector unique. This sector in the three areas of “ecotourism”, “food production” and “social behavior” play a crucial role in achieving Iran's Vision Policy of 1404 goals. However, Iran's valuable position in ornamental fish farming industry has been less attention and several issues challenged its development trend. Markazi is one of the leading provinces in this industry. So the main purposes of research were to identify current situation and providing development strategies. This study was descriptive and data were collected by survey method. The Statistical population was ornamental fish’s Producers and experts in Markazi province which due to limit number, census sampling was applied. The main tool for gathering information was questionnaire which its face validity confirmed through educational specialist and expert’s viewpoint. Also, the reliability of research tool was evaluated by Coronbach Alfa Test. The results showed that "Employment and income" and "Interest in breeding ornamental fish" were two main reasons to attract practitioners to this industry. The respondents considered the current situation ornamental fish industry, undesirable (Score 1.17 out of 5). Factor analysis showed that five factors named; "Corporate management and food resources", "management of extension and informing about authentic breeding principles", "Care Management and Insurance", "imported fish quality management" and "technical and financial support" have explained about 80% of the variance of the current situation and barriers to the development of ornamental fish industry in Markazi Province. The most important strategies to reduce facing problem in mentioned industry were development priority belonged ornamental fish industry trade system and development of specialized human resources training.
    Description: Published
    Keywords: Ornamental fish industry ; ِDevelopment ; Ornamental ; Fish ; Industry ; Fisheries ; Aquaculture ; Quality
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.133-148
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  • 5
    Publication Date: 2021-05-19
    Description: Debido a la disminución de las poblaciones de Panulirus argus a nivel nacional, y al conocimiento limitado sobre su estado actual en la región noroccidental de Cuba, se realizó la evaluación de la pesquería de langosta en esta zona. Se aplicó un Modelo Dinámico de Biomasa basado en series de captura (t) y esfuerzo pesquero (días pesca) por temporadas de pesca entre 1955-2015. El modelo mostró buen ajuste a los datos de captura (R2 = 0,74). Los parámetros estimados fueron: coeficiente de capturabilidad (q = 6,08 x 10-5), tasa intrínseca de crecimiento de la población (r = 0,18) y capacidad de carga del ambiente (K = 5 621 t). La captura máxima sostenible (CMS) obtenida fue de 251 t con un esfuerzo (fCMS) de 1 469 días pesca, una tasa de mortalidad por pesca (FCMS) de 0,089 y una biomasa (BCMS) de 2 811 t. A partir de 2012 se observó un incremento en la captura por unidad de esfuerzo, lo cual puede reflejar una cierta recuperación de la abundancia de la especie, ya que la biomasa presenta una tendencia creciente desde 2005 aunque todavía se encuentra por debajo del límite de sostenibilidad (BCMS), por lo que el recurso se califica como agotado. Los resultados de la tasa de mortalidad por pesca (F) muestran que existieron niveles elevados de explotación en los períodos 1966-1978, 1982-1992 y 1994-2005, que contribuyeron con la disminución de la biomasa por debajo de su nivel sostenible desde 1972. Sin embargo, en los últimos años se observa una reducción de F por debajo del límite de FCMS, y por lo tanto la pesquería no se encuentra bajo efectos de sobrepesca desde 2005.
    Description: Due to the declining populations of Panulirus argus nation wide, and the limited knowledge about its current status in the northwestern region of Cuba, an assessment of the spiny lobster fishery in this area was conducted. A biomass dynamic model was applied, based on catch series (t) and fishing effort (fishing days) by fishing seasons between years 1955-2015.The model showed good fit to the data catch (R2 = 0,74).The estimated parameters were: catchability coefficient (q = 6,08 x 10-5), population growth intrinsic rate (r = 0,18) and environment carrying capacity (K = 5 621 t). The maximum sustainable yield (MSY) obtained was 251 t, with an effort (fMSY) of 1 469 fishing days, a fishing mortality rate (FMSY) of 0.089 and a biomass (BMSY) of 2811 t. From 2012 an increase in catch per unit effort was observed, which may reflect a recovery in the abundance of the species. The biomass also shows a rebuilding from 2005, but remains depleted below the limit of BMSY. The fishing mortality rate (F) was high in the periods 1966-1978, 1982-1992 and 1994-2005, which contributed to the decline of the biomass below its sustainable level since 1972. In recent years F decreased bellow FMSY and therefore there is not overfishing since 2005.
    Description: Published
    Keywords: Langosta ; Modelo dinámico de biomasa ; Panulirus argus ; Pesquería ; Región noroccidental ; Lobster ; Biomass dynamic model ; Fisheries ; Northwestern region
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.24-29
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  • 6
    Publication Date: 2021-05-19
    Description: Thunnus tonggol is one of the most important large pelagic fish species in Hormuzgan province waters. Nominal catch of T. tonggol in 2010 was 32405 tones comprising 65% of total catch of large pelagic fishes. For sustainable exploitation of the resources of this fish, we need to identify its fishing pattern, maximum constant yield and recruitment pattern. Hence, length and weight data were collected randomly from 6 major artisanal fish-landing sites Hassineh, Kong, Bandar Abbas, Salakh, Sirik and Jask in Hormuzgan province, starting in April 2010 over one year. Growth parameters L∞ and K were estimated at 112.23cm 0.3 and (1/year), respectively. Hence, the natural mortality was calculated at 0.43 (1/year) and the maximum constant yield was computed at 11880 tones. Length-weight power relationship, W= aFLb , was W= 3×10-05FL2.82 that showed T. tonggol have isometric growth. Fishing pattern indicated that almost 85% of the catch was under the size at first maturity. Maximum recruitment pattern was in November with average fork length being 27cm. For optimum exploitation of T. tonggol stocks, we suggest two approaches including fishing ban in the maximum recruitment time and gear (Drift gillnet) modification.
    Description: Published
    Keywords: Mackerels ; Thunnus tonggol ; MCY ; Fishing ; Pattern ; Fisheries ; Fish ; Fish stocks
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.129-138
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  • 7
    Publication Date: 2021-05-19
    Description: Published
    Keywords: Establishment ; Streblospio gynobranchiata ; Cerastoderma glaucum ; Fish cage culture ; Structure ; Macrobenthic ; Invertebrate ; Population ; Culture ; Fish ; Biomass ; Abundance ; Feeding ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.23-40
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  • 8
    Publication Date: 2022-05-25
    Description: Despite an absence of freshwater exploitation, the adult salmon run in the Matamek River, Quebec, declined during 1975-1980 to 〈23% of the level thought to occur there prior to 1967. Returns in 1979 and 1980 of adults tagged as smolts were 1.0% and 0.9%, respectively. Numbers of emigrating smolts and their corresponding adult returns are not significantly correlated, although we observed a trend towards more salmon (2 sea year fish) returning with larger numbers of migrating smolts. Since 1967 there is noted a decrease in the age at which returning adults smolted and females appear to now constitute a larger percentage of returning grilse and salmon. These, and other changes in life history characteristics, appear to be caused solely by commercial exploitation.
    Description: Prepared by the Woods Hole Oceanographic Institution and the Department of Recreation, Fish and Game of the Province of Quebec.
    Keywords: Atlantic salmon ; Fish populations ; Atlantic salmon ; Fisheries
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 9
    Publication Date: 2022-05-25
    Description: The United States Congressional Serial Set contains a wide variety of historical documents relating to natural resources and their history in the United States. It is an excellent resource for those researching historical data concerning fisheries, from extant species and ecology to economic issues. Information on resources outside the United States is also available due to the U.S. history of explorations and expansions. Charts, maps and tables are found within many of the papers and reports. There are also numerous scientific illustrations.
    Keywords: Fisheries ; fisheries data ; historical account ; United States government data ; United States Serial Set
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 10
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    University of Tehran , Kish International Campus | Iran, Kish Island
    Publication Date: 2021-05-19
    Description: Unpublished
    Keywords: Lutjanus ehrenbergii ; Fish ; Fisheries
    Repository Name: AquaDocs
    Type: Images/Video , Non Refereed
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