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The relationship of shell dimensions and shell volume to live weight and soft tissue weight in the mangrove clam, Polymesoda erosa (Solander, 1786) from northern Australia
Gimin, R.; Mohan, R.; Thinh, L.V.; Griffiths, A.D. - In: Naga 27 (2004) 3-4, pp. 32-35
Shell dimensions (length, height, width) and shell volume were evaluated as estimators of growth for Polymesoda erosa in northern Australia. Each parameter was a good estimator when applied to live weight (r2 values of 76-96 percent), but not to soft tissue weight (wet, dry, or ash-free dry...
Persistent link: https://www.econbiz.de/10010554129
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A preliminary analysis on the socioeconomic situation of coastal fishing communities in Vietnam
Long, Nguyen - WorldFish Center, Consultative Group on International …
Fish production in Vietnam increased rapidly from 420 000 t in 1981 to 1 130 680 t in 1998. Likewise, there was an expansion in the number of motorized fishing boats from 29 584 units with an average horsepower (HP) of 19.8 boat-1 in 1981 to 71 800 units with an average HP of 26.2 in 1998. In...
Persistent link: https://www.econbiz.de/10008492407
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Status of demersal fishery resources in the Gulf of Thailand
Kongprom, Amnuay; Khemakorn, Pakjuta; Eiamsa-Ard, M.; … - WorldFish Center, Consultative Group on International …
demersal fishery resources in the Gulf of Thailand. Analyses were focused on biomass trends, population parameters and … indicate by 1995, the trawlable biomass in the Gulf had declined to only about 8.2% of the biomass level in 1961. The … spp., Saurida spp. and squids) comprising trawlable biomass. Estimates of exploitation rate (E) for 23 species indicate …
Persistent link: https://www.econbiz.de/10008492475
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Analysis of demersal fish assemblages in selected Philippine fishing grounds
Campos, W.L. - WorldFish Center, Consultative Group on International …
This paper presents the results of analyses of demersal fish assemblages in various fishing grounds in the Philippines. Data from exploratory trawl surveys conducted in 1947 - 49 show that the 24 fishing grounds covered by the survey can be arranged along a gradient of substrate type (i.e....
Persistent link: https://www.econbiz.de/10008492477
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Trophic model of the coastal fisheries ecosystem in the Gulf of Thailand
Vibunpant, Somchai; Khongchai, Narongsak; Seng-eid, Jarupa - WorldFish Center, Consultative Group on International …
The biomass of 40 ecological groups, the diet composition of prey and predators, production/biomass (P/B) and … consumption/biomass (Q/B) ratios, and catches were used as basic input to parameterize an Ecopath model of the Gulf of Thailand … profit) were also used as input for the time-series simulations using Ecosim. The results depict changes in biomass and …
Persistent link: https://www.econbiz.de/10008492478
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Trophic model of the coastal fisheries ecosystem of the west coast of peninsular Malaysia
Man, A. - WorldFish Center, Consultative Group on International …
A preliminary mass-balance trophic model was constructed for the coastal fisheries ecosystem of the West Coast of Peninsular Malaysia (0 - 120 m depth). The ecosystem was partitioned into 15 trophic groups, and biomasses for selected groups were obtained from research (trawl) surveys conducted...
Persistent link: https://www.econbiz.de/10008492481
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Preliminary analysis of demersal fish assemblages in coastal waters of the Gulf of Thailand
Khongchai, Narongsak; Vibunpant, Somchai; Eiamsa-Ard, M.; … - WorldFish Center, Consultative Group on International …
The 1995 trawl data of the research vessels Pramong 2 and 9 in the Gulf of Thailand were analyzed using TWINSPAN and DCA. Four main station clusters were identified related to geographic location and depth. Two clusters are associated with shallow water areas and the other two clusters are found...
Persistent link: https://www.econbiz.de/10008492489
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A trophic model of the coastal fisheries ecosystem off the west coast of Sabah and Sarawak, Malaysia
Garces, L.R.; Man, A.; Ahmad, A.T.; Mohamad-Norizam, M.; … - WorldFish Center, Consultative Group on International …
the area in 1972. The estimated mean trophic level of the fisheries catch for both models is about 3.3. The biomass values …
Persistent link: https://www.econbiz.de/10008492491
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An ecosystem model of San Pedro Bay, Leyte, Philippines: initial parameter estimates
Campos, W.L. - WorldFish Center, Consultative Group on International …
input parameters were obtained from the resource assessments studies conducted in 1994 - 95 and the biomass of Leiognathidae …
Persistent link: https://www.econbiz.de/10008492497
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Analysis of demersal assemblages off the north coast of Central Java, Indonesia
Nurhakim, S. - WorldFish Center, Consultative Group on International …
Trawl survey data collected by the RV Mutiara 4 in 1979 off the north coast of Central Java (Indonesia) were used to examine the composition and distribution of species assemblages in the area. Classification (TWINSPAN) and ordination (DCA) techniques commonly used in community structure...
Persistent link: https://www.econbiz.de/10008492508