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  • Fisheries  (13,839)
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  • 1
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    North West Water Authority
    Publication Date: 2013-03-22
    Description: This is the report from the Central Area Fisheries Advisory Committee meeting, which was held on the 31st March, 1982. It includes information on the River Leven smolt rearing scheme, the annual report on match fishing at Skerton and Mitton fisheries, and the report by the area fisheries officer on fisheries activites from September 1981 to January 1982. The report covers information on river conditions and fishing, migratory fish movements, an update on the work at Middleton hatchery, Salmon cages on the Leven and Langcliffe hatchery. It also includes information on fish disease, fish mortalities, management work and monthly salmon and sea trout catches for rod, line, nets and fixed engines for the 1981 season. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.
    Keywords: Fisheries ; Limnology ; Management
    Repository Name: Aquatic Commons
    Type: Monograph or Serial Issue , NonPeerReviewed
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  • 2
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    North West Water Authority
    Publication Date: 2013-03-05
    Description: This is the report from the South and West Cumberland Fisheries Advisory Committee meeting, which was held on the 16th October, 1978. It covers information on fisheries income and expenditure, the study of salmon propagation in England and Wales, work on the future programme of fisheries work, keep nets, and the drought order for the reduction of compensation water from Lake Ennerdale. It also covers the report by the area fisheries officer on fishing activities including river conditions and fishing, migratory fish movements, and an update on Holmwrangle hatchery. The report also looks at stocking numbers of salmon and sea trout in various rivers, predator counts for various rivers, fish mortalities and fish disease. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.
    Keywords: Fisheries ; Limnology ; Management
    Repository Name: Aquatic Commons
    Type: Monograph or Serial Issue , NonPeerReviewed
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  • 3
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    Geneva: World Trade Organization (WTO)
    Publication Date: 2020-04-21
    Description: In order to ensure transparency and to keep abreast of trade policies in support of sustainability, the WTO Committee on Trade and Environment (CTE) mandated the WTO Secretariat to compile and collate all environment-related measures notified to WTO. The database also includes environment-related entries found in Trade Policy Reviews (TPRs). This information, which is updated annually, is contained in the WTO Environmental Database (www.wto.org/edb). It has nearly 11,500 measures drawn from WTO notifications and over 7,800 trade policy review entries. By analysing the trade policy review entries over time, we can better understand how the relationship between trade and environment is evolving in Members' trade policies, the relevant sectors involved, and the types of instruments which are most frequently used to pursue environmental objectives.
    Keywords: F13 ; F18 ; F42 ; F64 ; F68 ; Q56 ; ddc:330 ; Agriculture ; Circular Economy ; Climate ; Energy ; Environment ; Environment and Trade ; Fisheries ; Forestry ; International Trade ; Policy Making ; Trade ; Trade Policy ; Services ; Waste ; Wildlife ; WTO
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:workingPaper
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  • 4
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    International Collective in Support of Fishworkers (ICSF)
    Publication Date: 2020-05-07
    Description: SAMUDRA Report No. 82, dated February 2020, features articles on fisheries from around the world. The current issue has extensive analysis and commentary on the Blue Economy and Blue Growth. The article from Seychelles analyzes the several contradictions in the conservation initiative of the country’s Blue Bond scheme, while the one from Sri Lanka points out that the National Fisheries Policy needs to be remodelled to incorporate the SSF Guidelines. Yet another says that women in fisheries can utilize the SSF Guidelines to advance their interests and build a common vision. The biggest-ever oil spill disaster in Brazil's history points to the need for State-sponsored disaster management, says another report. From neighbouring Chile comes a piece that argues for a new type of autonomous social movement to create a democratic and representative Constitution. India's draft National Inland Fisheries and Aquaculture Policy (NIFAP) is analyzed in one article, while another explains how artisanal fishers’ experiential knowledge can help address many problems, including climate change. SAMUDRA Report No. 82 also carries an obituary tribute to Sidney Holt, a towering intellect and a committed conservationist, who died late last year.
    Keywords: Fisheries ; Sociology
    Repository Name: Aquatic Commons
    Type: Monograph or Serial Issue , NonPeerReviewed
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  • 5
    Publication Date: 2020-05-26
    Description: Five of the seven species of pawikan (sea turtles) are found in the Philippine seas. These are Olive ridley turtle (Lepidochelys olivacea), Hawksbill turtle (Eretmochelys imbricata), Green sea (Chelonia mydas), Loggerhead turtle (Caretta caretta), and Leatherback turtle (Dermochelys coriacea). All of these are threatened species due to predation (animals and humans), climate change, harvesting of eggs, juveniles and adults, bycatch, and habitat degradation. Thus, to protect the species, several laws, policies, and programs have been passed and implemented by the Philippines government since 1979 (Marine Wild Fauna Watch of the Philippines (MWFWP), 2014). However, despite the efforts to protect the pawikan, reports about dead sea turtles due to various causes are becoming frequent than ever. Furthermore, public posts on Facebook about dead pawikan by private individuals are increasing. On the other hand, data on the mortality causes of sea turtles remain scarce as of the moment. Hence, to provide additional data, this study was conducted.
    Keywords: Conservation ; Ecology ; Environment ; Fisheries ; Information Management ; Pollution
    Repository Name: Aquatic Commons
    Type: Conference or Workshop Item , NonPeerReviewed
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  • 6
    Publication Date: 2019-05-06
    Description: The effects of chitosan (2%) coating combined with green tea extract (GTE) (1%) on the quality of tiger-tooth croaker (Otolithes ruber) fillets including chemical, microbiological, texture, color and sensory properties during 16 days of refrigerated storage was investigated. The color changes were significantly retared, and the texture parameteres and sensory scores were significantly improved in tiger- tooth croaker coated by chitosan, GTE and chitosan combined with GTE, compared with the control. The coincidental lowered rate of increase total volatile base (TVB) content, thiobarbitoric acid (TBA), peroxide value (POV) and free fatty acids (FFA) were obtained in tiger-tooth croaker coated chitosan+GTE. Chitosan in combination with GTE had higher inhibition on microbial growth and yielded the tigertooth croaker with higher likeness, compared with the other treatments. Therefore, fish coated with chitosan+GTE had the lowest losses in quality during refrigerated storage.
    Keywords: Biology ; Chemistry ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , PeerReviewed
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  • 7
    Publication Date: 2019-05-06
    Description: Hand cream is used for rehydrating and improving skin properties. The skin is the first point of contact with the environment. Thus having healthy skin with proper barrier properties is quite important. The beneficial effects of fish oil on skin make it a favorable ingredient to be used in hand care products. In the present study, the efficacy and stability of various hand cream formulations using 0, 1.0, 2.5 and 5.0% of fish oil were investigated and compared. The appearance, odor, texture, and pH of formulations containing 1 and 2.5% of fish oil remained stable in very good qualities during the storage, whereas the related values to the appearance and texture of formulation containing 5.0% of fish oil at the end of 6 months of storage at 45°C were significantly (p〈0.05) lower than other formulations and previous evaluations of this formulation. Weight loss was not observed in all formulations under study.
    Keywords: Biology ; Chemistry ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , PeerReviewed
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  • 8
    Publication Date: 2019-05-06
    Description: Snow-fed River Pinder -a tributary of River Alaknanda in central Himalaya was explored for fish assemblages and habitat specificity. Altogether 27 fish species were reported from three orders, four families and nine genera. Cypriniformes order was dominating followed by Siluriformes and Salmoniformes. Shannon-Weiner diversity index (3.09 to 4.10) and Simpson index of diversity (0.81 to 0.92) of four sites specified strong relationship with species richness. The distribution of fish species showed interesting patterns, 33% species were common to all four sampling sites while 14.80% were restricted to single site and the remaining species were randomly distributed among two or three sampling sites. Habitat variability in the river significantly influenced the species assemblage structure. About 7.40% species were found common to all habitats while 3.70% species were restricted to only single habitat type. The remaining 88.90% of species were dwelling between two to three habitat types. Deep pools recorded maximum species richness followed by shallow pools, while least species richness was recorded in cascade habitats. The conservation status of fish fauna of the river was ascertained by CAMP (Conservation Assessment and Management Plan). Out of 27 species, the status of 8 species was not assessed due to data being deficient, 7 species were categorised as lower risk near threatened, 6 as vulnerable, 5 as endangered while 1 species was exotic.
    Keywords: Biology ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , PeerReviewed
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  • 9
    Publication Date: 2019-05-06
    Description: Otolith shape analysis is one way to identify stocks of different fish species in the marine environment. Length, width, area, perimeter, form factor, aspect ratio, roundness, circularity, ellipticity and rectangularity analyses of otoliths were undertaken to assess patterns of spatial and temporal stock structure of a wide-ranging fish, the Arabian yellow fin sea bream Acanthopagrus arabicus. Fish were sampled from 125 stations across the distribution range of the species in the Northern Persian Gulf and Oman Sea from June 2014 to May 2016. Analysis of morphometric parameters of otolith showed the minimum size in Khuzestan waters and the West Strait of Hormuz and the maximum size in the East Strait of Hormuz. In Bushehr waters, form factor showed the lowest and circular factor showed the highest frequency. These findings are in agreement with the irregularity in otolith margin of this area. The highest aspect ratio of otolith indicated higher growth in Khuzestan Waters. The thinner and longer otoliths were identified in the East Strait of Hormuz region. Further, rectangularity ratio factor in the Bushehr and West Strait of Hormuz waters was higher in comparison with other regions and this finding confirmed the quadrilateral otolith shape of this region. There are significant differences among otolith morphometric variables of the A. arabicus (p〈0.05). The result of discriminant analysis on morphometric parameters indicated that 53/8 percent were in their geographic location accurately.
    Keywords: Biology ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , PeerReviewed
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  • 10
    Publication Date: 2019-05-06
    Description: To investigate the effects of carvacrol supplementation in rainbow trout induced by lipopolysaccharide (LPS), relative gene expressions levels of some pro-inflammatory cytokines and apoptosis markers in kidney and liver were measured. Fish with a mean weight of 44.71±1.33 g were studied using four different treatments with three replicates each. Inflammation and apoptosis were performed using LPS of Escherichia coli (25 µg ml ^-1) except in the control group and only carvacrol (100 µg ml ^-1 diet) containing diets were fed to this group (CAR). The last group was the infected fish fed carvacrol supplemented diet (+CAR). Kidney and liver tissues were removed 3 days after to determine the levels of interleukin-1β (IL-1β), interferon gamma (INF-γ), caspase 3 (Cas 3), caspase 8 (Cas 8) using Real-Time PCR analyses. IL-1β expressions of both kidney and liver was significantly decreased (12.9 and 2.14 fold, respectively) in LPS treated cells (p〈0.05). While IFN-γ expression was up regulated in kidney, it had down regulation in liver. LPS decreased both Cas 3 and 8 expressions in kidney but increased in liver. +CAR increased expressions of IL-1β and IFN-γ compared with the control (up to 2-3 fold) in all tissues except caspase gene expressions that were similar in the control. In all tissues, IL-1β and IFN-γ expressions increased in +CAR group, expect IFN-γ in the kidney. However, Cas 3 and 8 expressions including apoptosis was induced by up-down regulations in all tissues compared to LPS-injected fish. The results showed that carvacrol had pro-inflammatory and apoptotic effects especially on liver tissue of LPS-induced inflammation model of Oncorhynchus mykiss.
    Keywords: Aquaculture ; Biology ; Chemistry ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , PeerReviewed
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  • 11
    Publication Date: 2019-04-24
    Description: The fecundity of the blotched picarel Spicara maena from the western Mediterranean (Oran Bay) was assessed by the volumetric method. Total length (TL) of studied females varied between 91 and 140 mm (mean ± SD: 111.9 ± 10.6 mm). Estimates of total potential annual fecundity varied from 16,750 to 28,125 oocytes per individual (mean ± SD: 21,404.7± 2,698.8). Relationships between total potential fecundity (F) and TL, total weight, gonad weight were established using the multiplicative regression model and a high significant correlation was found in all the cases.
    Keywords: Aquaculture ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , PeerReviewed
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  • 12
    Publication Date: 2019-05-06
    Description: Caspian trout (Salmo trutta caspius Kessler, 1877) as endemic migratory fish, possessing great ecological economic and biodiversity value. Among the habitat drivers, temperature related effects on the genome were considered in this research. During the embryonic developmental stages, genomic alterations of single cells were assessed by Comet assay. After artificial propagation of wild broodstocks, the batches of eggs, were transferred to incubators with constant temperatures, REDD water recycling, 3 stages water filtration, UV-C application on effluent of each incubator and DO–pH–temperature control. Samples were collected from normal (8°C), cold (4°C) and warm (12°C) treatments on eyed egg, alevin and larval stages. Single Cell Gel Electrophoresis were applied on samples for evaluation of Comet Tail length (TL), DNA in tail (DT) and Tail Moment (TM) indices as DNA damage markers. Comparison between mean values of Comet TL index indicated 85.19 ±9.2, 9.88 ±2.3 and 256.54±14.6 for 4, 8 and 12°C treatments, respectively. DT were 18.07±6.3, 9.72±1.9 and 31.47±2.8 and then TM were measured as 15.27± 4.1, 1.21±0.2 and 95.25±8.6 for 4, 8, and 12°C treatments, respectively. Significant difference between thermal treatments (p〈0.05) observed. Warm treatments demonstrated greater DNA damage in compare with others. TM explained better information in comparison with TL and DT in all analyzed samples. In conclusion, temperatures out of the range of the optimal conditions could significantly affect Caspian trout genome which could be the subject of management considerations pertaining to Caspian trout stocks rehabilitation and captive rearing strategies.
    Keywords: Biology ; Fisheries
    Repository Name: Aquatic Commons
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  • 13
    Publication Date: 2019-06-06
    Description: Non-tariff measures (NTMs) can affect trade performance of trading partners. In addition to trade performance, the NTMs (including sanctions) may have direct and indirect linkages to capacity of trading partners to meet their commitments under Sustainable Development Goals (SDGs). The purposes of this research were to explore the performance of exports of seafood industry of Sri Lanka before, during and after the imposition of European Union's ban in January, 2015 and to develop indicators and measure the impact of the same ban on stakeholders of the seafood industry in Sri Lanka by looking through the prism of sustainable development. More specifically, this study applied composite indicator approach with min-max normalization, arithmetic mean aggregations and weighting techniques to assess the impact on several of SDGs. The principal component analysis was performed to identify the best sub-indicators for the composite indicator. During the period when the ban was in force, Sri Lanka seafood industry experienced lower revealed competitive advantage score, market concentration score and growth rate than at other times. Further, the findings revealed that the ban generated mixed effects on SDGs. Due to the ban, SDG 12 (responsible production) and SDG 14 (life below water) have been positively impacted while SDG 1 (no poverty) and SDG 8 (economic growth) were adversely affected. The research recommends that unilateral and ad hoc decisions should not be taken regarding NTMs because they have very sensitive and invisible linkages with SDGs. Furthermore, when there are legitimate needs to impose such NTMs, sufficient time should be given to the trading partners to put in place measures and actions for compliance with such NTMs.
    Keywords: F13 ; Q01 ; ddc:330 ; Fisheries ; Seafood industry ; NTMs ; Import Ban ; SDGs ; Sri Lanka
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 14
    Publication Date: 2019-06-06
    Description: The members of the World Trade Organization (WTO) have been continuously involved in achieving a balanced outcome in the area of fisheries subsidies negotiations in 2018. The discussions have been ongoing and will continue in 2019. According to the 11th Ministerial Conference decision of the WTO, members are committed towards securing a deal in 2019. There are various aspects of fisheries subsidies that members of the WTO are presently assessing. The SDG (Sustainable Development Goals) Target 14.63 is one of the fundamentals for an outcome in the fisheries negotiations. The SDG Target 14.6 aims to prohibit or reduce fisheries subsidies linked to overfishing, overcapacity and illegal, unreported and unregulated fishing (IUU). In 2018, in the Rules Negotiating Group (RNG) on the fisheries clusters, members have discussed on overfishing and IUU issues. However, discussions on the overcapacity issue merits further investigations part of the SDG Target 14.6. This paper therefore aims to assess the relationship between fishing vessel capacity and fisheries subsidies as well as non-tariff measures, and provide further policy advice to trade negotiators in relation to the SDGs. In the assessment, we use panel data modelling of select developed OECD member countries that hold current vessel capacity and assess this against subsidies, non-tariff measures, exports and fish landing. The selected OECD member countries comprise of the proponents of the "Friends of fish" group. The finding of the paper provides policy recommendations for negotiators on fisheries subsidies and overcapacity. It also provides suggestions for special and differential treatment for developing and least developed countries (LDCs) in the fisheries negotiations.
    Keywords: F13 ; F18 ; Q22 ; H23 ; ddc:330 ; Fisheries ; SDGs ; Sri Lanka ; OECD
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 15
    Publication Date: 2019-07-23
    Description: The present paper reports a new record of Giant devil ray Mobula mobular (Bonnaterre, 1788) from western Algerian waters that is encountered for the first time in that coast since its first description in 1901 and last observation in late 80’s. This elasmobranch is categorized as endangered on the IUCN Red List (Endangered A2d ver 3.1) and is likely to be the rarest of the nine species of Mobula genus. Occasionally it is captured in Mediterranean Sea by purse seines, bottom and pelagic trawls, pelagic nets, bottom longlines, drifters and harpoons. The specimen stranded in “la Madrague Beach” in Western Algerian coasts. Its disc length was measuring 108.96 cm and disc width was 226.02 cm. This Myliobatidae is rarely seen with daily landed fish at Oran fishery. Up to date no explicit reason can be given for the strand of M. mobular but ghost fishing and important maritime traffic stay the most plausible cause of this incident.
    Keywords: Ecology ; Environment ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , PeerReviewed
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  • 16
    Publication Date: 2019-07-20
    Description: We tried to estimate age, growth parameters, condition factor, length-weight relationship and mortality rates (Z, M, and F) of the common carp in Merdja Sidi Abed dam. Cyprinus carpio specimens were captured by long line between April and June 2013 in Merdjea Sidi abed. 220 individuals were collected and weights ranged between 265.5 and 620.3 g while the total length ranged between 26.3 and 35.6 cm. Length-converted catch curve was used to estimate total annual instantaneous mortality rates (Z), natural mortality was calculated using Pauly formula [ln(M) = -0.0152 - 0.279 ln(L∞) + 0.6543 ln(K) + 0.463 ln(T)]. Recruitment patterns were determined from the routine implemented in FISAT II. For all individuals (n = 220) of the common carp, the relationship between total length and body weight was: W = 0.0384 L2.70 (r2 = 0.906) for females and W = 0.0467 L2.653 (r2 = 0.976) for males a minor allometry was found for this species, mean condition factor K was estimated at 1.41. The maximum value of recruitment was recorded in March-April period with 19.56 and 15.20% respectively. The Battacharya method was used to estimate age of individuals that was comprised between 1 and years 3. The equation of Von Bertalanffy growth was: L = 36.75 [1-e-0.46 (t + 0.33)] for all the population. Total mortality (Z), natural mortality (M) and fishing mortality (F) were as follows: Z = 1.08, M = 0.82, F = 0.26 yr-1 while exploitation ratio (E) was evaluated at 0.24 indicating an under exploitation of this local resource.
    Keywords: Aquaculture ; Ecology ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , PeerReviewed
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  • 17
    Publication Date: 2019-09-12
    Description: This study used mitochondrial cytochrome c oxidase 1 in the identification of the fish prey from the gut samples collected from a stranding of a dead Irrawaddy dolphin in Pulupandan, Negros Occidental. Obtained consensus sequences were searched against the nucleotide database of NCBI and reference sequences, and sample sequences were used for generating the dendrogram and the pairwise genetic distances between species. Results showed that most of the sample sequences were 99% identical to the reference sequences.Eubleekeria splendens and Conger japonicus were the identified species in the stomach contents. E. splendens is a demersal and coastal species while C. japonicus is a demersal species and has not been previously recorded in the Philippines. Conflict in the taxonomy of the Conger genus may suggest that this may be identified as C. jordani. This study reports the first record of fish prey identification of the Irrawaddy dolphin in the country. Continuous monitoring of the Irrawaddy dolphin in the Guimaras Strait, including their feeding ecology, is needed to understand the population further and to improve their conservation.
    Keywords: Ecology ; Fisheries
    Repository Name: Aquatic Commons
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  • 18
    Publication Date: 2019-09-12
    Description: The shrimp aquaculture is one of the most important livelihoods in the Philippines. Although there is an observed boost in the production of shrimps in the Philippines, there are remaining problems that are needed to be resolved. Bacterial and viral infections in shrimps have significantly affected its mortality, resulting in lower production and yield. In order to prevent or lessen this effect, various researches have been made to increase the resistance of shrimps against infections. In this study, a probiotic microorganism, Lactobacillus salivarius was used as a dietary supplementation for Macrobrachium rosenbergii and see its influence on the antioxidant biomarkers and temperature stress tolerance of the shrimp. Three concentrations of L. salivarius (1.0x107, 1.0x108, and 1.0x109 cells/g) were initially tested for its effect towards the oxidative stress tolerance and the oxygen consumption of the shrimp. The study involved the use of various antioxidant biomarkers including total glutathione (tGSH), catalase enzyme activity, and lipid peroxidation. Results showed that 1.0x108 cell/g of L. salivarius was the most effective concentration of probiotic microorganism per weight of feeds in improving the metabolic rate of the shrimp. Oxidative stress tolerance levels were observed to be increasing in terms of the catalase reaction (12.46 and 21.74 nmole/min) and lipid peroxidation (1.4X10-7 and 1.49X10-7 nmole MDA/mg protein) on both hepatopancreas and muscles tissues when the shrimp was fed with supplemented feeds. Also, high oxidant stress biomarkers were more evident on the hepatopancreas than the muscles.
    Keywords: Ecology ; Fisheries ; Health
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 19
    Publication Date: 2019-09-12
    Description: The eco-translation approach offers a new perspective to translate concepts in fishing and aquaculture. It focuses on ecological meanings of local knowledge (LK). Such knowledge, embedded in the local language, Hiligaynon, is used as an impetus for developing a trilingual glossary of fishing and aquaculture. Eco-translation becomes the theoretical springboard for translating Hiligaynon words in Filipino and English. The gathering of word tokens is informed by linguistic ethnography, a research method that focuses on the description of the community experiences, activities, and appreciation of its ecology. The LK is presented through the fisherfolk’s narratives of their cultural experiences, identification, and analysis of local fishing and aquaculture word tokens, along with its validation. The trilingual glossary highlights the concepts on preparations, harvesting, and marketing of fishing and aquaculture. Evidently, the community uses its LK through its language to create concepts for fishing and aquaculture that represent its own culture and ecological experiences.
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 20
    Publication Date: 2019-09-12
    Description: Farming of Litopenaeus vannamei in the Philippines was seen as a measure to increase shrimp production in the country. Taura Syndrome Virus (TSV) is a viral pathogen reported to be associated with Litopenaeus vannamei and other shrimp species. TSV outbreak impedes the production of Litopenaeus vannamei population and other species susceptible to the virus. Detection of TSV in L. vannamei in the Philippines calls for proper mitigation and appropriate actions for aquaculture and environmental management towards sustainable development. This study embarked on the detection of TSV using a purposive sampling method. Samples showing morphological symptoms of TSV such as redness of the carapace and pleopods and necrotic gill tissue collected from sites in Luzon and Visayas in the Philippines were processed. Viral RNA was extracted from the gills, the central area of infiltration and replication site of the virus. Complementary DNA (cDNA) was synthesized from the RNA templates and were subjected to RT-PCR under specific conditions using TSV specific primers against a positive control. Selected sites in the Philippines were proven to be positive of infection as they showed morphological symptoms and RT-PCR result in having a band at around 200 base pairs (bp). Percentage of prevalence results were obtained: Bulacan with 5 out of 15 samples (33%), Batangas with 7 out of 15 samples (47%), Bohol with 1 out of 15 samples (7%) and Cebu with 2 out of 15 samples (13%). The Batangas samples showed the highest prevalence of 47% (7 out of 15 samples) that were positive of the infection. This study reported the presence of TSV in L. vannamei in the country using morphological and molecular techniques.
    Keywords: Ecology ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 21
    Publication Date: 2019-09-12
    Description: A preliminary study on spawning period, length at maturity, and main fishing grounds of Decapterus macrosoma (shortfin scad) collected from coastal waters of San Fernando, Romblon, Philippines were conducted. A total of 1,168 specimens were collected from July 2016 to December 2017. From these specimens, the minimum and maximum total lengths were 11.50 cm to 22 cm while its body weights ranged from 13 g to 100 g, respectively. D. macrosoma was capable of spawning whole year round. Two spawning peaks were observed (February and August to September) based on the monthly mean gonadosomatic indices. Male appeared to dominate female as evidenced by its sex ratios. The lengths at 50% maturity of female and male D. macrosoma were estimated at 15.29 cm and 17.22 cm, respectively. D. macrosoma was caught in volume through commercial ring net at a depth of about 150 m-200 m within the municipal waters. Coastal waters near barangay Canjalon and Agtiwa were identified as the main fishing grounds of D. macrosoma in San Fernando, Romblon. This initial data on spawning period may be used as a basis in implementing closed fishing season of D. macrosoma in the locality, and the length of maturity may as well be used for the allowable size of the capture of this species.
    Keywords: Ecology ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 22
    Publication Date: 2019-11-23
    Description: Kurzfassung: Aus dem aktuellen WGBFAS-Bericht des ICES geht hervor, dass Nahrungsmangel in der östlichen Ostsee Kümmerwachstum und damit einen Verlust an Produktivität bei Dorsch verursacht. Dieser Zustand, zunächst unbemerkt, verschlimmert sich seit etwa 30 Jahren. Hungernde Bestände müssen unbedingt vermieden werden, denn, nur der über den Grundbedarf hinausgehende Anteil der assimilierten Nahrung, wird für das Wachstum eingesetzt. Eine Reduktion der Bestandsgröße ist erforderlich! Der Internationale Rat für Meeresforschung (ICES) hat jedoch die Schließung der Fischerei auf Dorsch empfohlen. Betrachten wir die Fischerei durch die Brille der Aquakultur, stellen wir fest, dass diese Empfehlung kritisch hinterfragt werden muss. Nutzt man den „gemästeten“ Dorschbestand nicht ausreichend, werden mögliche Erträge ebenfalls nicht realisiert. Zusätzlich zu diesem Verlust verliert man das zur Mast eingesetzte Futter. Denn, als Alternative zur Dorschmast wären Erträge aus der Fischerei auf Hering und Sprotten möglich. Im Gegensatz dazu verursacht die Überfischung des Dorschbestandes zwar Ertragseinbußen, eröffnet aber gleichzeitig erweiterte Fangmöglichkeiten auf die Futterfischbestände. Die Überarbeitung der verwendeten Bestandsmodelle und die Hinwendung vom Einartenansatz über den Ökosystemansatz, hin zu Ansätzen, die Ökonomie und Ökologie vereinen, sind notwendig. Vergleicht man die Futterkosten mit den späteren Erlösen wird klar, dass bei der Mast von Dorsch über einer Körpermasse von etwa 1 kg mehr Geld in der alternativen Futterfisch-Fischerei verloren wird, als bei der Fischerei auf Dorsch gewonnen wird. Ein reflexartig geforderter Bestandsschutz verursachte in den vergangenen Jahrzehnten geringe Wachstumsraten bei Dorsch durch Unterfischung in der östlichen Ostsee und damit einen Rückgang der Produktivität auch bei anderen Arten. Man kann keine ertragreiche Fischerei auf Dorsch, Hering und Sprotten erwarten, wenn man einen hungernden Dorschbestand duldet. Um nun aber größere Dorsche fangen zu können, muss die Zahl der Rekruten ausreichend gering sein. Wir wissen es aus unserem Kleingarten. Wenn wir die Radieschenreihen nicht ausdünnen, können wir nur kleine Radieschen ernten. Das Gleiche gilt für den Kabeljau in der Ostsee. Wenn wir die Zahl der Rekruten nicht frühzeitig reduzieren, werden wir immer kleinen Kabeljau zu unattraktiven Preisen fangen. You can find the English version of the manuscript here: https://ssrn.com/abstract=3419758 Abstract: The latest ICES WGBFAS report shows that food shortages in the eastern Baltic Sea are causing poor growth and thus a loss of cod productivity. This situation, initially unnoticed, has been worsening for about 30 years. It is essential to avoid starving stocks, because only the part of assimilated food that exceeds basic needs is used for growth. A reduction of the stock size is necessary! However, the International Council for the Exploration of the Sea (ICES) has recommended the closure of the cod fishery. If we look at fishing through the eyes of aquaculture, we see that this recommendation must be questioned critically. If the "fattened" cod stock is not used sufficiently, potential yields will not be realised either. In addition to this loss, the feed used for fattening is also lost. Because, as an alternative to cod fattening, yields from fishing for herring and sprat would be possible. In contrast, overfishing of the cod stock may result in a loss of yield, but at the same time it opens up greater fishing opportunities for forage fish stocks. A revision of the stock models used and a shift from the one-species approach via the ecosystem approach to approaches that combine economy and ecology are necessary. If one compares the feed costs with the later revenues, it becomes clear that when fattening cod beyond a body mass of about 1 kg more money is lost in the alternative forage-fish fishery than is gained when fishing for cod. A reflex-like demand for stock protection has caused low growth rates for cod in recent decades due to underfishing in the eastern Baltic Sea and thus a decline in productivity for other species as well. You cannot expect high-yield fishing for cod, herring and sprat if you tolerate a starving cod population. In order to catch larger cod, however, the number of recruits must be sufficiently low. We know this from our allotment garden. If we don't thin out the rows of radishes, we can only harvest small radishes. The same applies to cod in the Baltic Sea. If we do not reduce the number of recruits beforehand, we will always catch small cod at unattractive prices.
    Keywords: Biology ; Fisheries ; Management ; Policies
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  • 23
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    North Pacific Marine Science Organization (PICES)
    Publication Date: 2020-01-28
    Description: PICES science in 2017: Notes from the Science Board Chair. 2018 PICES awards. ECCWO-4 Workshop on “Intercomparison of fisheries and marine ecosystem models”. The PICES–MAFF-sponsored Project on “Building capacity for coastal monitoring by local small-scale fishers”. Northeast Pacific juvenile salmon summer surveys in 2018. 2018 PICES Summer School on “Coastal ocean observatory science”. Working Group 37 organizes a Practical Workshop on “Production methodologies and measurements for in situ zooplankton”. PICES in Ireland: ADRIFT marine bioinvasions study presented at NEOBIOTA 2018. The Bering Sea: Current status and recent trends. The Northeast Pacific: Current status and recent trends. The western North Pacific during the 2018 warm season. In memory of Boris Kotenev. New leadership in PICES.
    Keywords: Biology ; Chemistry ; Fisheries ; Oceanography
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  • 24
    Publication Date: 2020-03-05
    Description: Experiments were conducted to optimize the nursery rearing methods for the sea cucumber Holothuria scabra at the BFAR-GMFDC, Eastern Samar. The growth performance and survivorship of juveniles were compared in different locations, seasonality, stocking densities, and rearing media. For the experiments on location and seasonality, nursery rearing was conducted in Guiuan and in Salcedo, Eastern Samar during April-May, July-August, and September-October 2018. The mean total weight gain (TWG) and specific growth rate (SGR) of juveniles were significantly better in Guiuan (3.78 g and 13.09%.d-1, respectively) compared to Salcedo (1.997 g and 11.70%.d-1, respectively) (p 〈 0.05). However, survival rates were significantly higher in Salcedo (75.67%) compared to that of Guiuan (66.89%) (t=-1.732, p〉0.05). Predatory crabs and parasitic isopods (Cymodoce sp.) infiltrated the net cages in Guiuan, which increased the mortality of juveniles. Highest growth and survivorship were observed during dry months in April-May 2018 (TWG of 3.71 g, survival of 71.39%) but were lowest during the wet season in September-October 2018 (TWG of 2.26 g, survival of 70.89%). However, the growth and survival results did not significantly differ among different months (p〉0.05). For the experiment on stocking density, juveniles stocked at 300 ind./cage had the highest growth (TWG of 5.19 g, SGR of 13.86%.d-1) while juveniles at 1000 ind./cage had the lowest growth (TWG of 1.28 g, SGR of 10.70%.d-1) (p 〈 0.05). Survival rates of the juveniles in 300 ind./cage were also highest (80.30%). This study recommends stocking juveniles at 500 ind./cage since survival at this density did not significantly differ with that of 300 ind./cage (p〉0.05). In terms of rearing medium, growth was better in floating net cages (TWG of 2.60 g, SGR of 11.67%.d-1) compared to indoor tanks (TWG of 0.18 g, SGR of 6.38%.d-1). However, indoor tanks yielded higher survival rate (67.83%) than floating net cages (56.11%) (p〉0.05). Higher mortality in net cages was caused by intruding predators and fluctuations in water quality.
    Keywords: Biology ; Fisheries ; Health
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  • 25
    Publication Date: 2020-03-05
    Description: A pre-column derivatization-ultra high performance liquid chromatographic (UHPLC) method is described for the determination of histamine in fish and fishery products. The homogenized samples were extracted with trichloroacetic acid (TCA) solution and derivatized with o-phthaldialdehyde. Histamine was separated using reversed-phase column and determined using UHPLC with fluorescence detection. The linear calibration range was 10 to 60 µg/mL with a correlation coefficient of 0.9993. Good recoveries were observed for the histamine under investigation at all spiking levels, and average recoveries were higher than 89% with a precision smaller than 8.46%. The detection and quantification limit were 2.7 and 8.3 µg/g, respectively. The uncertainty was estimated to be ± 0.45. The performance of the proposed method was checked with a proficiency test sample from the Food Analysis Performance Assessment Scheme (FAPAS) as external quality control; the resulting z-score was -0.2, which was found within acceptable range of -2 ≤ z ≤ 2. The results indicated that this HPLC method was reliable, sensitive, reproducible, and practical for the routine analysis of histamine in fish and fishery products.
    Keywords: Chemistry ; Environment ; Fisheries
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  • 26
    Publication Date: 2020-03-05
    Description: Analysis on the catch of Bigeye tuna (Thunnus obesus) from purse seine and ring nets of various net depths was conducted to assess the effect of reducing net depth as a compatible measure the Philippines has implemented and reducing the catch of Bigeye in its internal waters and the Exclusive Economic Zone (EEZ). The study was based on observer reports from ring net and purse seine fishing vessels operating in internal waters and EEZ as well as from group seine operations in the high seas pocket 1. Nets were classed by depth to determine and compare variations on the catch of Bigeye, catch rates and relative proportion, species composition, and fishing grounds. Results indicated that the catch of Bigeye is correlated with the depth of net, with a significantly higher catch of Bigeye in deeper nets. The result of the study is consistent with other studies elsewhere, and in consonance with the implementation of Fisheries Administrative Order 236 limiting the depth to 115 fathoms for ring net and purse seine operating in Philippine internal waters and the EEZ as a compatible measure to reduce the catch of Bigeye.
    Keywords: Conservation ; Fisheries ; Management ; Policies
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  • 27
    Publication Date: 2020-03-05
    Description: The effectiveness of a conventional predator system for tiger prawn ponds consisting of a net barrier and fence interwoven around a modified pond gateway (set-up 1) was compared to an expanded system that directed water-borne pests to a fish compartment (set-up 2). The compartment had two confinement areas holding fifty, 5 g sea bass fingerlings and nineteen, 300-400 g tiger grouper juveniles separated by a fine mesh net gate secured to a sluice structure. Regardless of the set-up employed, after 88 days of culture, three pest categories were identified inside the ponds: prawn predators, opportunistic feeders, and benthic scavengers. Wet biomasses of fish pests were 1.92 kg and 2.12 kg, while that of mangrove snail was 29 kg and 80 kg in setups 1 and 2, respectively. Prawn length-weight frequency from 30% biomass manifested negatively skewed population curves with the highest frequency size range of 111-120 mm: set-up 2 had a smaller skewness value (-10.68) than set-up 1 (-20.64). A significant t-value of -1.39 (p 〈 0.10; df18 at t90) indicated that prawns raised in set-up 2 were larger than those grown under set-up 1. Finfish pests collected from set-up 2 were fewer than those in set-up 1, consisting predominantly of smaller (81-120mm) Megalops cyprinoides and Tilapia mossambicus: pests with total lengths below 81 mm were presumed to have been eaten by the sea bass and tiger grouper in the fish compartment. In both predator control systems, the period where tiger prawns are most vulnerable to predation pressure was during the first two months of culture, at lengths less than 111 mm and weights below 12.9 g.
    Keywords: Aquaculture ; Fisheries ; Health
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  • 28
    Publication Date: 2020-03-05
    Description: In recent years, increasing global trade, travel, and transport had rapidly increased the rate of introduction and diversity of non-native fish species. Once established, some introduced fish species can become aggressive and dangerously invasive. Here, we provide the first report of the occurrence of a non-native Midas cichlid Amphilophus citrinellus in Laguna de Bay using morphological analysis and genetic marker, specifically the mitochondrial gene cytochrome c oxidase subunit 1 (CO1). The results provide important information on the presence of another invasive species in Laguna de Bay that needs to be addressed since this species can competitively exclude, predate, and displace native species
    Keywords: Biology ; Conservation ; Fisheries
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  • 29
    Publication Date: 2020-03-05
    Description: A first-ever effort to rank commercially-important mollusk species of Panay Island was conducted based on an extensive survey between March and April 2018. Ranking was based on the following criteria, namely: commercial value (40%), catch rates (20%), sources of threats (type of gear, processing plants, and number of fishers) (20%), frequency in the markets and source sites (10%), and literature available (10%), modified to a certain extent. A total of 90 mollusk species categorized into bivalves (49), gastropods (32), and cephalopods (9) were ranked. The comb pen shell Atrina pectinata (Pinnidae), Indian squid Uroteuthis duvaucelii (Loliginidae), and the scallop Mimachlamys sanguinea (formerly Chlamys senatoria) (Pectinidae) formed the top three species in the list strongly attributed to their high commercial value and thus catch rates. Squids, in general, are caught by trawls, whereas most of the other species are harvested primarily by gleaning and diving. The study highlights the high diversity of the malaco-fauna of Panay, as well as the multi-gear character of tropical fisheries. This ranked inventory can be used in prioritizing research on mollusks, by identifying target species for more in-depth studies useful for establishing their present status.
    Keywords: Environment ; Fisheries ; Planning
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  • 30
    Publication Date: 2020-03-05
    Description: The ornamental fish business is a lucrative industry worldwide with huge prospects for livelihood and trade, but the Philippines has not developed this industry to its full potential due to some constraints. This study was conducted to assess the ornamental fish industry in the Philippines using purposive survey interview and focal group discussions in major production areas in the country to determine aspects for development. Information on key stakeholders in the marine and freshwater ornamental fish sector; quantity and value of production by region and by species; and trade were generated from the study. Approximately 8,911,879 pieces of marine ornamental fish were exchanged per year, contributing to PHP 137,165,576 in the country’s annual trade. Production of freshwater ornamental fish was 14,304,739 pieces valued at PHP 145,958,667. The bulk of marine ornamental fish supply came from regions with coral reef areas teeming with marine ornamentals, namely: Regions IV-A (65.56%), III (23.18%), and VII (4.63%). Freshwater ornamental fish were produced mainly by Regions IV-A (34.29%), XI (35.41%), VI (11.96%) and III (10.43%) which have existing local markets. The center of trade for marine ornamental fish is Metro Manila and Cebu City due to the presence of international airports. Meanwhile, freshwater ornamental trade is concentrated in major cities and municipalities given the significant number of local hobbyists. An ornamental fish development program is needed to attain the full potential of the industry with an emphasis on (1) captive breeding of marine ornamental and freshwater indigenous fish, (2) tapping the export market for freshwater ornamental fish, and (3) promoting the sustainability of wild-caught marine ornamental fish.
    Keywords: Fisheries ; Management
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  • 31
    Publication Date: 2020-03-05
    Description: Different aspects of Holothuria scabra larval production, including feeding regimen and water treatment, were investigated under experimental conditions. This study highlights the optimization of techniques and simplification of the requirements of sea cucumber larval rearing. The growth performance, development, and survivorship of H. scabra larvae were measured to assess which treatment provides optimum results. Chaetoceros gracilis (Cgr) and Chaetoceros calcitrans (Cc) were administered singly and in combination (Cgr-Cc) to sea cucumber larvae. Growth was highest in combined Cgr-Cc feed with mean final length of 2088µm, followed by Cc with 1855 µm and Cgr with 1800 µm, but with no significant difference (p 〉 0.05). Similarly, survival rates among treatments were not statistically different (Cgr-Cc = 2.23%; Cgr = 1.6%; Cc = 1.3%) (p 〉 0.05). However, larval development was better in combined Cgr-Cc and Cc single diet, with 90% and 100% composition of early juveniles on Day 30. Slower development was observed in Cgr single feed, with only 90% early juveniles observed later on Day 35. Different microalgal concentration of Cgr-Cc (10,000, 30,000 and 50,000 cells.mL-1) were also tested. Juveniles (~3 mm) yielded from 50,000 cells.mL-1 microalgal concentrations were five times larger than when fed at 10,000 cells.mL-1 microalgae. Development of larvae was also faster in 50,000 cells.mL-1, yielding harvestable juveniles in 25 days. However, water replenishment in tanks with high microalgal density should also be regularly done at 50-70% rate in two days interval to mitigate fouling. In addition, sand-filtered, chlorinated, and UV-treated seawater were also tested for their efficiency as culture media. Growth rates were significantly highest in sand-filtered seawater (68.3 µm.d-1), followed by UV-treated seawater (52.4 µm.d-1), and by chlorinated seawater (34.8 µm.d-1) (p 〈 0.05). Larval development did not differ in sand-filtered and UV-treated seawater, yielding ~1 mm juveniles as early as Day 25. Likewise, sand-filtered seawater rendered highest survival of larvae (10.24%) followed by UV-treated seawater (6.24%); chlorinated seawater yielded lowest (2.60%) (p 〈 0.05). Although a sterilization process is advised, findings on sand-filtered seawater as a rearing medium were notable.
    Keywords: Aquaculture ; Biology ; Fisheries ; Health
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  • 32
    Publication Date: 2020-05-07
    Description: During the present study collectively eighty two (82) molluscan species have been explored from Bandri (25 04. 788 N; 61 45. 059 E) and Shapk beach (25 01. 885 N; 61 43. 682 E) of Jiwani coast. This study presents the first ever record of molluscan fauna from shapk beach of Jiwani. Amongst these fifty eight (58) species were found belonging to class gastropoda, twenty two (22) bivalves, one (1) scaphopod and one (1) polyplachopora comprised of thirty nine (39) families. Each collected samples was identified on species level as well as biometric data of certain species was calculated for both sites. Molluscan species similarity was also calculated between two sites. For gastropods it was remain 74 %, for bivalves 76 %, for Polyplacophora 100 % and for Scapophoda 0 %. Meanwhile total similarity of molluscan species between two sites was calculated 75 %. Notable identified species from Bandri and Shapak includes Oysters, Muricids, Babylonia shells, Trochids, Turbinids and shells belonging to Pinnidae, Arcidae, Veneridae families are of commercial significance which can be exploited for a variety of purposes like edible, ornamental, therapeutic, dye extraction, and in cement industry etc.
    Keywords: Biology ; Fisheries
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  • 33
    Publication Date: 2020-05-07
    Description: In the present study fifteen morphometric characters of Indian mackerel, Rastrelliger kanagurta were studied. Collections were made from three fish harbors, Kund Malir, Sonmiani and Gadani, Baluchistan, Pakistan. The morphometric lengths (total length, fork length, standard length, head length, pre-dorsal fin length, pre-orbital length, eye diameter, lower-jaw length, pre-anal fin length, head depth, pectoral fin length, pelvic fin length, greatest depth and pre-pelvic fin length and pre-pectoral fin length) were recorded and the descriptive statistical parameters and correlation coefficient (r) were analysis with independent variable (total length) and dependent variable (other morphometric parameters). The result shows that morphometric parameters are highly correlated to total length. Coefficient of correlation (r) indicated highest positive correlation between total length and forked length (r = 0.961, r = 0.928 and r = 0.919 at Kund Malir, Sonmiani and Gadani, respectively).The maximum total lengths of R. kanagurta recorded in the present study were 26.1 cm at Kund Malir, 26.3 cm at Sonmiani and 29.0 cm at Gadani. This study provides knowledge to the biologists regarding morphometric characters of Indian mackerel, Rastrelliger kanagurta from the fish harbors of Baluchistan to help in planning of conservation strategies for this fish species.
    Keywords: Biology ; Fisheries
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  • 34
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    International Collective in Support of Fishworkers (ICSF)
    Publication Date: 2020-05-07
    Description: Samudra Report No. 81, dated June 2019, features articles on fisheries from around the world, with a special focus on implementation of the the Voluntary Guidelines for Sustainable Small-Scale Fisheries (SSF Guidelines). The editorial Comment that opens the issue focuses on subsistence fisheries in the Western and Central Pacific region and their importance as a source of nutrition, culture and welfare for the communities living there. It notes that the course of action for the region is outlined in the SSF Guidelines, which need to be integrated into regional strategies and processes. An article from Cuba reports on a Fisheries Forum that brought together stakeholders from coastal communities to examine opportunities and challenges to make fisheries more sustainable, considering how vital fishing is for Cuba's economy and the livelihoods of its coastal communities. The geography, histories and cultures of the Pacific island region, and its 14 small island developing states, represent unique challenges and opportunities, argues another article. It notes that the introduction of the SSF Guidelines is an ambitious global-level policy pledge designed to provide overarching guidance towards improving the governance of small-scale fisheries around the world. The piece from Nigeria shows how waterfront communities, whose livelihoods are predominantly dependent on fishing and related activities, live under constant fear of eviction.
    Keywords: Fisheries ; Sociology
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  • 35
    Publication Date: 2018-10-19
    Description: Efficiency of various meshes of gillnets and trolling gear was investigated for catching kingfish (Scomberomorus commerson) in coastal waters of Sistan and Baluchestan province in 2007. In gillnets with mesh sizes between 57 to 110 mm and netting of monofilamnet and multifilament, the size distribution of kingfish ranged between 40 to 78 cm of fork length, which all specimen caught were immature. In mesh size of 146 mm and 171 mm, the length range of the species was larger, in which the frequency of immature fish for the respective mesh sizes was 19 and 11. In general, most fish was captured by wedging in the all mesh sizes. The size range of kingfish captured by the trolling was between 52 and 147 cm, of which more than 50 percent of caught fish were immature. The proportion of kingfish catches in the gillnets of 57-110 mm mesh sizes is about 13% of the total catch composition, for which the mesh sizes are considered as the dominant gillnets for capturing the species in this area. The conribution of kingfish catches in 133, 146, and 171 mm mesh sizes was 1.1, 52.3 and 18.9% respectively, with a 146-mm mesh size is considered as a dominant gillnet for this species. The implementation of the ban on the use of 57 to 110 mm mesh sizes for exploitation of kingfish is mandatory, which the mesh size of 146 mm and above seems to be appropriate for responsible fishery of the species. However, recommendation of standard mesh size needs to be re-examined in field trials.
    Keywords: Fisheries
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  • 36
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    Ministère de la Pêche et de l’Economie Maritime. Direction de la Pêche Continentale
    Publication Date: 2018-10-22
    Description: Le sous-secteur de la pêche continentale est une composante essentielle de l’activité halieutique et revêt une importance capitale pour l’économie des régions continentales (Source importante de protéine et de revenues). La Pêche continentale est pratiquée aussi bien au niveau des principaux fleuves qu’au niveau des mares et autres plans d’eau aménagés. Elle est une activité artisanale qui cherche à s’améliorer de jour en jour avec l’aide de l’Etat à travers des aménagements d’infrastructure et autres donations et subvention d’équipements. La Production de la continentale varie d’une région à une autre du fait de la configuration hydrographique, des écosystèmes et du professionnalisme des acteurs.
    Keywords: Fisheries
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  • 37
    Publication Date: 2019-01-08
    Description: A workshop to strengthen small-scale fishery communities in the context of the SSF Guidelines was held on 28 September 2018 at the National Science Foundation in Colombo, Sri Lanka. A workshop was held in Colombo, Sri Lanka for the implementation of the Voluntary Guidelines for Securing Sustainable Small-Scale Fisheries in the Context of Food Security and Poverty Eradication (SSF Guidelines). The workshop, held on 28th September, 2018 was attended by 45 participants from the Ministry of Fisheries and Aquatic Resources Development (MFARD), the Director General of the Department of Fisheries and Aquatic Resources Development (DFARD), National Aquaculture Development Authority (NAQDA) and Ceylon Fisheries Corporation (CFC), and 15 officers from Coast Conservation Department (CCD), Agriculture Department, Ministry of Tourism, Department of Wildlife, Coast Guard (Navy) and Marine Environmental Protection Agency (MEPA).
    Keywords: Fisheries
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  • 38
    Publication Date: 2019-01-07
    Description: Social contexts inevitably influence entry into the occupation and how fishing lives are shaped by the unfolding of non-fishing identities. Temporal perspectives can help us understand what it means to be a fisher – including the importance of social contexts for entering the occupation and how non-fishing identities shape the unfolding of fishing lives.
    Keywords: Fisheries ; Sociology
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  • 39
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    Publication Date: 2019-01-07
    Description: Only collective action in small-scale fisheries can overcome the problems of poverty, marginalization, insecure tenure rights and powerlessness.
    Keywords: Fisheries ; Sociology
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  • 40
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    International Collective in Support of Fishworkers (ICSF)
    Publication Date: 2019-01-08
    Description: SAMUDRA Report No. 80, dated December 2018, features articles on fisheries from around the world that focus on a diverse range of issues, from small-scale fisheries and community fisheries to illegal fishing, the SSF Guidelines, conservation of manta rays and fisheries governance, among other topics. The editorial Comment in this issue discusses how the Regional Plan of Action for Small-scale Fisheries in the Mediterranean and the Black Sea is a model for other regional fisheries management organizations. The tide of fortune for small-scale fisheries in the Mediterranean and the Black Sea is turning, says the opening article. The article from Cambodia shows how extensive and well-developed is the nation's system of community fisheries. Sri Lanka's SSF communities can be strengthened in the context of the SSF Guidelines, argues another article, while a report from Vietnam on a recent consultation workshop discusses illegal fishing and co-management in the central coastal region. The piece from Indonesia discusses how Lamakera village has initiated a programme for the conservation of manta rays. From Pakistan comes a report on a Peoples Long March against dams on the Indus River. Effective fisheries governance has led to democratization and decentralization in Myanmar, according to another article. The social contexts and lives of fishing communities are analyzed in another article, while the last article in the current issue points out that only collective action in SSF can overcome the problems of poverty and marginalization. SAMUDRA Report No. 80 also features the regular Roundup section that carries news snippets, analysis and tidbits on fisheries from around the world. SAMUDRA Report No. 80 can be accessed at: https://www.icsf.net/en/samudra/article/EN/80.html?limitstart=0
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  • 41
    Publication Date: 2018-10-23
    Keywords: Fisheries
    Repository Name: Aquatic Commons
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  • 42
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    Publication Date: 2019-03-27
    Keywords: Fisheries
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 43
    Publication Date: 2018-09-18
    Description: The Sustainable Development Goal for the oceans and coasts (SDG 14) as part of the 2030 Agenda can be considered as an important step towards achieving more comprehensive blue growth. Here, we selected a set of 18 indicators to measure progress against SDG 14 for EU coastal states in the Baltic and the North Sea and the Atlantic Ocean since 2012. In our assessment we distinguish between a concept of weak and strong sustainability, assuming high and low substitution possibilities, respectively. Overall, we show that the majority of countries in our assessment fail to achieve comprehensive blue growth. Sweden, Spain, Ireland, and in particular Portugal experienced a considerable reduction in scores since 2012. The only exemption is Estonia which managed to improve its scores over time under both concepts of sustainability. The unsustainable development at the EU level is mainly driven by deteriorations in indicators related to fisheries.
    Keywords: Q01 ; Q22 ; Q56 ; ddc:330 ; Sustainable Development Goals ; Blue Growth ; European Union ; Fisheries
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:workingPaper
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  • 44
    Publication Date: 2018-06-19
    Description: The feeding habits and trophic level of Himantura gerrardi were studied according to sex and size classes of 80 individuals obtained using bottom trawl between May and December 2014 from the Oman Sea. Collected specimens were divided into three size classes (small〈38 cm, medium 38-58 cm and large〉58 cm) based on disk width. Prey was identified in seven main zoological categories, where crustacean and polychaetes were the dominant in diets, indicating this species is a demersal dwelling species. No significant differences were observed between sexes, but size classes showed significant differences in their diets. Also, results showed a decrease in feeding overlap between size classes with an increase in disk width, suggesting that intraspecific competition reduced, which allows the coexistence of different size classes. Trophic level was positively correlated with the disk width, which was lower than 4.0 for both sexes and different size classes, placing it in an intermediate trophic level.
    Keywords: Biology ; Ecology ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , PeerReviewed
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  • 45
    Publication Date: 2018-03-15
    Description: Conflicting forces of nature, alongside the ecological intervention of traditional fishermen, helped mitigate the destruction wrought in Puerto Rico by Hurricane María
    Keywords: Environment ; Fisheries
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 46
    Publication Date: 2018-06-19
    Description: After entering aquatic ecosystems, heavy metals accumulate in the organs and tissues of aquatics including fish and finally enter the food chain. These heavy metals can enter the human body through eating contaminated fish. Absorbance values and accumulation of heavy metals in aquatics especially the fish depend on ecological conditions, physical, chemical and biological factors of water, the element type, and the physiological state of the aquatic (Oryan et al., 2010). Among aquatic ecosystems, wetlands and rivers are considerably important from the point of ecology. Rivers act as carriers of nutrients and non–nutrients and wetlands act as sinks for these substances. Now this effect will be more apparent if the wetland is an intermediary between a river and a static ecosystem. The Anzali Wetland is the type of ecosystem that embraces water from 11 rivers from one side and passes water into the Caspian Sea through a second outlet on the other side. The rivers passing through urban and rural areas and forests carry different types of organic matter, minerals, sediment, and industrial sewage (Taheri, 2013). The Anzali Wetland is one of the valuable wetlands registered in the Ramsar International Convention the contamination of which has become the main challenge for the people and officials during the past two decades (Khosravi, 2011).
    Keywords: Biology ; Fisheries ; Pollution
    Repository Name: Aquatic Commons
    Type: Article , PeerReviewed
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  • 47
    Publication Date: 2018-03-15
    Description: Cyclone Ockhi, which hit southern India late last year, brought out the need to empower communities to manage risks through locally owned and locally appropriate approaches
    Keywords: Fisheries
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 48
    Publication Date: 2018-03-15
    Description: The Norwegian experience shows that learning about sustainable small-scale fisheries development should not be a one-way traffic from the North to the South
    Keywords: Fisheries
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 49
    Publication Date: 2018-03-15
    Description: In the wake of tropical cyclone Ockhi, the focus now should be on improving at-sea cyclone preparedness and search-and-rescue co-ordination to save precious lives
    Keywords: Fisheries
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 50
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    Kish International Campus, Tehran University
    Publication Date: 2018-08-20
    Keywords: Biology ; Fisheries
    Repository Name: Aquatic Commons
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  • 51
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    Kish International Campus, Tehran University
    Publication Date: 2018-08-20
    Keywords: Biology ; Fisheries
    Repository Name: Aquatic Commons
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  • 52
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    UNSAM EDITA
    Publication Date: 2019-02-10
    Description: Este libro contiene las presentaciones de las conferencias invitadas de expertos y las realizadas en formato “poster” por los estudiantes participantes en el Workshop “Aguas + Humedales”, realizado en San Martín entre el 17 y el 22 de octubre de 2016 en la Universidad Nacional de San Martín, San Martín, Argentina. Con el objeto de brindar a los estudiantes de posgrado un panorama amplio del problema del agua y su proyección hacia el futuro, el material que aquí se presenta se ocupa de temas tales como el agua como fuente segura para consumo humano y su vida cotidiana, como recurso fundamental para la actividad agropecuaria, como fuente de alimentos, como fluido de proceso y de transporte de calor, como vía de comunicación y transporte. Se plantean interrogantes sobre la disponibilidad del recurso, sobre la intervención humana en el ciclo hidrológico y en el clima. También se analizan problemas relacionados con tecnologías para el tratamiento de aguas, tanto para consumo humano como tratamiento de efluentes de diverso tipo. Se presta especial atención a la dimensión social del tema: derecho y economía del agua, estudios vinculados con las decisiones sobre el uso del recurso y el desarrollo de legislaciones y regulaciones.
    Keywords: Agriculture ; Aquaculture ; Biology ; Chemistry ; Conservation ; Earth Sciences ; Ecology ; Engineering ; Environment ; Fisheries ; Limnology ; Policies ; Pollution
    Repository Name: Aquatic Commons
    Type: Book , PeerReviewed
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  • 53
    Publication Date: 2018-09-11
    Keywords: Environment ; Fisheries ; Sociology
    Repository Name: Aquatic Commons
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  • 54
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    Publication Date: 2018-09-11
    Description: Innovative boat clinics bring health and hope to thousands of men, women and children, among India’s poorest, who live along the mighty Brahmaputra river.
    Keywords: Fisheries ; Sociology
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 55
    Publication Date: 2018-09-11
    Description: Costa Rica is among the first few countries to respond immediately and favourably to the question of implementation of the Voluntary Guidelines for Securing Sustainable Small-scale Fisheries in the Context of Food Security and Poverty Eradication (the SSF Guidelines). In a move that extends overwhelming support to the small-scale fisheries, in particular to women in the sector, the Costa Rican government, in association with the country’s fishers and their representatives, and civil society organisations, has introduced a bill for the implementation of the SSF Guidelines. Titled ‘General Law for the sustainability of small-scale, artisanal fisheries in the context of food security, poverty eradication and shared governance’, this bill is presently under consideration by the representatives of the Costa Rican Legislative Assembly.
    Keywords: Fisheries ; Policies
    Repository Name: Aquatic Commons
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  • 56
    Publication Date: 2018-09-11
    Description: Sex-segregated employment data in the recently released State of World Fisheries and Aquaculture 2018 report points to the need for better and more standardised data collection.
    Keywords: Fisheries ; Sociology
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 57
    Publication Date: 2018-09-10
    Description: Women in Seafood Industry (WSI) is an international not-for-profit organization whose aim is to reinforce the voices of women in the seafood industry, amplifying their visibility through projects and collaborations with existing associations, and by supporting relevant initiatives and sharing information on the worldwide web.
    Keywords: Fisheries ; Sociology
    Repository Name: Aquatic Commons
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  • 58
    Publication Date: 2018-09-11
    Description: This article reviews a recent publication on women’s participation and leadership in fisherfolk organisations and collective action in fisheries.
    Keywords: Fisheries ; Sociology
    Repository Name: Aquatic Commons
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  • 59
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    Publication Date: 2018-09-10
    Description: The painful aftermath of Cyclone Ockhi reveals the multiple dimensions of disaster preparedness that still need attention in India.
    Keywords: Fisheries
    Repository Name: Aquatic Commons
    Type: Article , NonPeerReviewed
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  • 60
    Publication Date: 2018-09-10
    Description: Voluntary Guidelines for Securing Sustainable Small-scale Fisheries: Gender equity and equality produced by the Fisheries and Aquaculture Department, and the Social Policies and Rural Institutions Divisions of the Food and Agriculture Organization of the United Nations (FAO); 6.04 minutes; English
    Keywords: Environment ; Fisheries
    Repository Name: Aquatic Commons
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  • 61
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    Publication Date: 2019-03-27
    Keywords: Fisheries ; Sociology
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  • 62
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    International Collective in Support of Fishworkers
    Publication Date: 2018-09-10
    Keywords: Fisheries ; Sociology
    Repository Name: Aquatic Commons
    Type: Monograph or Serial Issue , NonPeerReviewed
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  • 63
    Publication Date: 2018-09-11
    Description: Under Suman Singh’s leadership, women in Madhubani, India, gain greater control over their lives.
    Keywords: Fisheries ; Sociology
    Repository Name: Aquatic Commons
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  • 64
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    International Collective in Support of Fishworkers (ICSF)
    Publication Date: 2018-09-10
    Description: The opening editorial Comment in this issue argues that as the implementation of the Voluntary Guidelines for Securing Sustainable Small-Scale Fisheries in the Context of Food Security and Poverty Eradication (SSF Guidelines) gets under way, it is imperative to lobby for policies and processes that will empower small-scale fishing communities. How the Guaranis, indigenous people of Morro dos Cavalos in Brazil, are being displaced from their lands to satisfy the interests of politicians and businesses is analyzed in one article, while another details how the Seafood Slavery Risk Tool tracks abuses of labour and human rights in seafood supply chains. The current issue also features a report on the Danish Institute for Human Rights’ meeting on the contribution of human rights to the sustainable development of fisheries. Continuing on the theme of livelihood rights, the article from Indonesia delineates the causes for the poor nutritional intake in Indonesia's coastal communities. On-the-ground reports of two meetings – one on the largest conference on occupational safety and health in the fishing industry, held in Canada, and the other, on the 33rd Session of the FAO Committee on Fisheries (COFI) – provide insights into issues that plague the fisheries sector in different ways. Another article in SAMUDRA Report No. 79 explains how fishermen and scientists are being brought together to track wind and waves, and save lives, through new innovative weather forecasting technology. A report on the Pêcheurs du Monde film festival, held in Lorient, France, and which turns 10 this year, as well as a review of a book on the global implementation of the SSF Guidelines, swing the spotlight to the problems that small-scale fishing communities face around the world. SAMUDRA Report No. 79 also features the regular Roundup section that carries news snippets, analysis and tidbits on fisheries from around the world. SAMUDRA Report No. 79 can be accessed at https://www.icsf.net/en/samudra/article/EN/79.html?limitstart=0
    Keywords: Aquaculture ; Environment ; Fisheries ; Health ; Law
    Repository Name: Aquatic Commons
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  • 65
    Publication Date: 2018-06-19
    Description: Small pelagic fishes particularly anchovy (Encrasicholina punctifer) and sardine (Sardinella sindensis) have an important role to support the Iranian fisheries and are distributed along the coastal waters of the Persian Gulf and Oman Sea. Using a logbook on small pelagic fisheries, a GIS-based environmental modeling approach was applied to investigate the presence and abundance of anchovy and sardine in relation to environmental variables. Redundancy analysis (RDA) was applied to provide a preliminary view of the relationships between fish presence/absence and environmental variables. Generalized Additive Models (GAMs) indicated the presence/absence of fish was related to distance from the nearest coast, depth, sea surface Chlorophyll-a, and SST. Results of the EFH showed that sardine is concentrated in specific areas of more favorable conditions, such as north of the Persian Gulf and all areas of the northwest of the Oman Sea. However, EFH of anchovy showed a more widespread distribution, occupying most of the north-west of the Oman Sea coastal waters, south of Qeshm Island in the Strait of Hormoz as well as the Parsian district in the north of the Persian Gulf. In this study, it seems that the anchovy showed the probability of presence in the areas with more distance from the coastal waters. However, the EFH probability presences of sardine were predicted for near coastal water and obviously, shallower waters. Due to the development of small pelagic fisheries, it is highly recommended to investigate anchovy and sardine fishing possibility in areas with high EFH prediction probability.
    Keywords: Biology ; Fisheries
    Repository Name: Aquatic Commons
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  • 66
    Publication Date: 2018-06-19
    Description: Monthly length frequency data of banana shrimp, Penaeus merguiensis were collected from the coastal waters of the north east of the Persian Gulf, from January 2012 to January 2013. Software package FiSAT was used to analyze the length frequency data. Growth parameters, mortalities, exploitation rate and recruitment pattern were estimated from the carapace length in the area. Based on length – weight relationships, the estimated parameter a was 0.0015 for males and females and b was 2.8015 for males and 2.7852 for females. The estimated growth parameters: L∞=39.5 mm, K=1.8 year^−1 and t0=-0.08 year^−1 for males and L∞=50 mm, K=1.5 year^−1 and t0=-0.09 year^−1 for females. Longevity was estimated 1.67 and 2.00 years for males and females, respectively. The estimated mortality coefficients, were Z=5.9 (4.89 – 6.92) year−1 (α=0.05), M=2.9 year^−1 and F=3.0 year^−1 for males and Z=5.7 (4.94–6.37) year^−1 (α=0.05), M=2.5 year^−1 and F=3.2 year^−1 for females. The length at first capture, Lc estimated from the probability of capture routine was 23.3 mm for males and 24.2 mm for females. Sex ratio (M:F=1.1:1) was significantly different to 1:1. The exploitation rates of shrimp were 0.49 and 0.56 for males and females, respectively which could get higher because the survival of spawning stock after the fishing season is related to environmental factors and has less effect on the next year’s biomass. Recruitment was continued throughout the year but with one major peak in July to November.
    Keywords: Biology ; Fisheries
    Repository Name: Aquatic Commons
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  • 67
    Publication Date: 2018-03-15
    Description: The experience with tourism-based boat trips in Caixa d´Aço Bay in Paraty, Brazil, highlights the problems of livelihoods in restricted-use protected areas
    Keywords: Fisheries
    Repository Name: Aquatic Commons
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  • 68
    Publication Date: 2018-06-19
    Description: One of the most visible direct impacts of fishing is the capture of non-target species, known collectively as by-catch. By-catch includes species that are unwanted and discarded (discards) and species that are retained and sold (byproduct) (Stobutzki et al., 2003). Although tuna purse seine fisheries have been shown to be selective, leading to lower levels of by-catch than other fisheries (Alverson et al., 1994; Kelleher, 2005), several species can be incidentally caught and, in some cases, discarded at sea. These include vulnerable and sensitive species such as turtles, mammals, and sharks (Minami et al. 2007; Romanov, 2008b). Tuna purse seine fisheries probably apply the most intensive direct human impact on the tropical epipelagic ecosystems in all oceans. Because of the worldwide scale of purse seine fisheries, an assessment of their impact on associated and dependent species is essential (Romanov, 2002a).
    Keywords: Fisheries
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  • 69
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    Publication Date: 2018-03-15
    Description: Fisherfolk use their social networks to navigate formal and informal rules in accessing the fisheries of Lake Victoria
    Keywords: Fisheries
    Repository Name: Aquatic Commons
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  • 70
    Publication Date: 2018-06-19
    Description: In the current paper reproductive strategy and growth rates of Luciobarbus esocinus were investigated from 2010 to 2012, in Gamasiab River, Kermanshah, Iran. Samples were collected seasonally by gillnet and electro-fisher device. Sex ratio was evaluated from 162 individuals and the percentage of male and female individuals were 54.76% and 45.24% respectively. Age structure was distributed between I and V and most frequency numbers for males and females belonged to II and IV age group, respectively. Length-weight relationship was computed as W=8E-05TL^2.6546 for all individuals. Mean total length and weight was 333.82±13.10 mm and 297.67±4.85 g for males, and 371.5±21.17 mm and 307.85±7.64 g for females. The von-Bertalanffy growth models of L. esocinus were described as Lt =357.14×[1-e^(-0.77×(t-0.090))] for males, Lt =367.02×[1-e^(-0.78×(t–0.094))] for females and Lt =363.57×[1-e^(-0.76×(t –0.087))] for both sexes. Results indicated that growth factors were highly similar in spring, summer and winter. CDA analysis revealed that the total and gonad weight are the main factors in discriminant analysis. The highest GSI values were found in spring for females and winter for males, however, it decreased rapidly after spring in females. Maximum growth rates were observed in early ages (I-II) and depleted with ages. K value and L∞ were determined as 0.77±0.09 Y^-1 and 357.14±10.38 mm for males and 0.78±0.24 Y^-1 and 367.02±24.15 mm for females, respectively. In conclusion this study provided basic information for stock assessment and management of L. esocinus in Gamasiab Reservoir.
    Keywords: Biology ; Fisheries ; Management
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  • 71
    Publication Date: 2018-03-15
    Description: Belize, a pioneer in fisheries conservation, has become the first country to adopt a national, multispecies territorial user rights programme
    Keywords: Fisheries
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