Resultados de la búsqueda
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Interannual changes in body fat condition, stomach content mass and distribution of minke whales in Antarctic Areas IV and V
the six years included in the study, two were categorized as years of poor body fat condition, and ... three as years of good condition. Estimated body weight gain during the feeding season in poor years was ... 25 % lower than in good years. The relationship between girth and stomach content mass in the ice ... (Euphausia superba) was the dominant prey species, but in the southern part of the Ross Sea (in Area V), E ...
Meeting Document : WG-EMM-97/18 : Autor(es): Ichii, T., Nishiwaki, S., Tamura, T., Fujise, Y., Matsuoka , K.
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Linking predator and prey behaviour: contrasts between Antarctic fur seals and macaroni penguins at South Georgia
are the two main land-based krill Euphausia superba consumers in the northern Scotia Sea. Using a ... -based (animal tracking and diet analysis) techniques, we examined variability in the foraging ecology of ... these sympatric top predators during the austral summer and autumn of 2004. Krill availability derived ... from acoustic surveys was low during summer, increasing in autumn. During the breeding season, krill ...
Meeting Document : WG-EMM-10/P07 : Autor(es): C.M. Waluda, M.A. Collins, A.D. Black, I.J. Staniland and P.N. Trathan
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A SIMULATION MODEL FOR EVALUATING MANAGEMENT STRATEGIES TO CONSERVE BENTHIC HABITATS (VULNERABLE MARINE ECOSYSTEMS) WHICH ARE POTENTIALLY VULNERABLE TO IMPACTS FROM BOTTOM FISHERIES
ecosystems’ in order to maintain the ecological structure and function of, particularly, deep sea benthic ... habitats. Noting the paucity of data on the ecology of these habitats, this paper provides a practical ... approach to develop and evaluate fishing strategies aimed at achieving this objective i.e. what is the most ... cost‐effective way that fishers might be able to collectively enact this resolution? The UNGA ...
Meeting Document : WG-SAM-09/21 : Autor(es): A.J. Constable (Australia)
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Analysis of krill fishery operations in Subarea 48.1: spatial-time distribution of CPUE and fishing efforts
Abstract: In previous years we revealed that period 2006-2011 is characterized by the highest ... values of standardized CPUE indices in the Subarea 48.1 for the last 25 years. We continue to investigate ... krill fishery data for understanding reasons of this ‘high CPUE’ regime. The authors present the ... method. We obtained the additional evidence that ‘high CPUE’ regime’ in 2006-2011 is not associated with ...
Meeting Document : WG-EMM-14/21 : Autor(es): S. Kasatkina and P. Gasyukov (Russia)
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Direct ageing of Antarctic krill (Euphausia superba) – potential utility of eyestalk sections for age determination
Abstract: We outline a method for the direct determination of age in Antarctic krill (Euphausia ... superba). Recent studies (Kilada et al. 2012), have shown that annular growth bands are present in the ... endocuticle layer of the eyestalks and gastric mill in decapod crustaceans. Here we report on a preliminary ... proof of concept study using several known age krill grown under controlled conditions at the Australian ...
Meeting Document : WG-EMM-15/45 : Autor(es): C. Reiss (USA), R. Kilada (Canada) and S. Kawaguchi (Australia)
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WS-KCPUE-85
trends D.G.M. Miller and D.S. Butterworth (South Africa) WS-KCPUE-85/04 Some considerations on the ... usefulness of CPUE data from Japanese krill fishery in the Antarctic Y. Shimadzu and T. Ichii (Japan) WS ... -KCPUE-85/05 An updated information of the Japanese krill fishery in the Antarctic Y. Shimadzu (Japan) WS ... -KCPUE-85/06 Some aspects of repeated operation on the same patch in Japanese krill fishery T. Ichii ...
Meeting
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Fitting a von Bertalanffy growth model to length-at-age data accounting for length-dependent fishing selectivity and length-stratified sub-sampling of length frequency samples
Abstract: Response-biased sampling in the context of regression modelling occurs when sample ... units are selected with a probability that is a function of the response. In sampling to obtain fish to ... is the response and age is the predictor variable. These sample processes are (i) the actual fishing ... process involving a particular gear, and (ii) the method of on-deck sub-sampling fish for ageing from the ...
Meeting Document : WG-FSA-SAM-05/13 : Autor(es): S.G. Candy (Australia)
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Research standards for exploratory fisheries
Abstract: The potential for data poor exploratory fisheries in the CAMLR Convention area to ... recommendations are made for optimizing this potential. The types of data that have led to successful assessments ... in the past are reviewed. Exploratory fisheries and research questions for subareas without currently ... assessed stocks (48.6, 58.4, parts of 88.1 and 88.2) are summarized. The multi-nation, multi-year ...
Meeting Document : WG-SAM-11/15 Rev. 1 : Autor(es): D. Kinzey (USA)
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Report on a tuna long-lining fishing voyage aboard Southern Venture to observe seabird by-catch problems
Abstract: Incidental captures of seabirds, and the behaviour of seabirds around the fishing gear ... birds survived hooking in this study because of the lighter gear and quicker recovery of the long-line ... (about 6 hours between beginning the set and beginning hauling-in). Petrels, particularly Cape Pigeons ... Daption capense, were mainly responsible for bringing the sinking baits back to the surface where ...
Meeting Document : WG-IMALF-94/10 : Autor(es): M.J. Imber (New Zealand)
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Krill distribution and biomass variability within Subarea 48.3 in June 1991
within each survey. The maximum horizontal extension of swarms was 120 m, although about 70% of swarms ... less than 1 tonne. Average statistical parameters of swarms in the polygon varied insignificantly from ... survey to survey, while the swarm number varied within the board range from 1 918 to 7 000 and further to ... 1 554 units. Krill biomass in the polygon varied spasmodically within the range from 1 091 to 6 085 ...
Meeting Document : WG-KRILL-93/35 : Autor(es): S.M. Kasatkina, E.N. Tymokhin, P.P. Fedulov and K.E. Shulgovskiy (Russia)