Résultats de la recherche
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Fishing and conservation in southern waters
. The former Soviet Union has been the most important fishing nation, taking 80-90 % of the entire catch ... . The krill catch from the Southern Ocean has been 4.9 million tonnes to date. More than 90 % of this ... catch originated from the Atlantic sector. 50- 90 % is taken from the foraging range of land-based ... the by-catch of juvenile fish in the krill fishery, to incidental mortality of birds during longline ...
Meeting Document : SC-CAMLR-XII/BG/11 : Auteur(s): Delegation of Germany
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Sampling toothfish from longlines with unequal probabilities
Abstract: To obtain a representative sample of the catch taken by toothfish longliners, CCAMLR ... with less catch effort than those outside; or more generally, sampling effort is applied in inverse ... sampling data, or sampling effort should be proportional to catch effort. As vessels generally record the ...
Meeting Document : WG-FSA-03/85 : Auteur(s): J.R. Ashford (USA)
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QUANTIFYING MOVEMENT BEHAVIOUR OF VESSELS IN THE ANTARCTIC KRILL FISHERY
behaviour of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed ... a distinct pattern. Mean between-haul distances were generally longer when catch levels fell below ... 10 t per haul, and the travel distance decreased as the catch level increased; this pattern was most ...
Meeting Document : WG-EMM-09/P05 : Auteur(s): S. Kawaguchi and S.G. Candy
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REPORT ON A RANDOM STRATIFIED TRAWL SURVEY TO ESTIMATE DISTRIBUTION AND ABUNDANCE OF DISSOSTICHUS ELEGINOIDES AND CHAMPSOCEPHALUS GUNNARI IN THE HEARD ISLAND REGION (DIVISION 58.5.2) FOR 2008 AND 2009
generally reduced from the previous year’s survey, with the catch of toothfish being one third of that for ... features of the survey was the very large catch of jellyfish. In contrast, overall catches for the 2009 ... survey were much higher than those from the 2008 survey. The total catch of fish was three times higher ...
Meeting Document : WG-FSA-09/34 : Auteur(s): G.B. Nowara (Australia)
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Preliminary aspects of a simulation model to be used for evaluating the experimental crab fishery
Antarctic crab fishery. A simulation model is proposed for conducting this work. Length frequency and catch ... recruitment relationship, and a model for catch that contains a random normal deviate. Finally, an algorithm ... simulation. This algorithm is based on the idea that each fishing vessel constructs a map of expected catch ...
Meeting Document : WG-FSA-94/26 : Auteur(s): G. Watters (USA)
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Robust characterisation of the age structure, growth and recruitment of toothfish in the Macquarie Island and Heard Island and McDonald Islands fisheries
these fisheries. The inclusion of catch at age data is shown to substantially improve the precision of ... the stock assessment in Division 58.5.2 compared to a scenario using only catch at length data. The ... catch at age data remains a high priority for toothfish fisheries. A costing breakdown for otolith ...
Meeting Document : WG-FSA-12/P07 : Auteur(s): D.C. Welsford, S.G. Candy, J.J. Verdouw and J.J. Hutchins
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Estimating the biodiversity of the shelf and oceanic zone of the d’Urville Sea (East Antarctica) for ecoregionalisation using the CEAMARC (Collaborative East Antarctic Marine Census) CAML surveys
biogeography of the pelagic species. The SB is the northern limit of Euphausia superba and the ASF clearly ...
Meeting Document : WS-MPA-11/07 : Auteur(s): P. Koubbi (France), G. Hosie, A. Constable, B. Raymond (Australia), M. Moteki (Japan), N. Améziane, R. Causse (France), V. Fuentes (Spain), K. Heerah, F. Penot, D. Vincent, A. Ancel, C.A. Bost, M. Eléaume (France), D. Lindsay (Japan), M. Lindsay (Australi
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Killer whale Orcinus orca and sperm whale Physeter macrocephalus interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic
interactions were observed at night. Catch rates were significantly lower (P > 0.05) when killer whales were ... /hook; 48.5 fish/1000 hooks). The same trend was, however, not observed for catch rates when sperm ... whales were present during hauling (0.32 kg/hook; 51.9 fish/1000 hooks). Catch rates were in fact ... likely that sperm whales were attracted to areas with high catch rates, but in areas with lower catch ...
Meeting Document : WG-FSA-03/27 : Auteur(s): M.G. Purves (United Kingdom), D.J. Agnew (United Kingdom), E. Balguerías (Spain), C.A. Moreno (Chile) and B. Watkins (South Africa)
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The results of performance of tagging programs of the Korean exploratory fishery for Dissostichus spp. in 88.1 in the 2010/11 season
on Dissostichus spp. and by-catch such as their distribution, size, sex, weight, etc. This paper ... presented the results from the fisheries and comparison of statistics in each SSRU. Total catch including by ... -catches in 88.1 BCJL were 35,436 fishes. Dissostichus Spp. was the highest catch, contributing 99.62% to ... 88.1B and C, a depth of 600 to 700 in 88.1J and L. The composition of the by-catch species was WGR, ANT ...
Meeting Document : WG-FSA-11/54 : Auteur(s): T. Jung and H.J. Choi (Republic of Korea)
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Results of a research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea, February 2012
. Catch rates of pre-recruit toothfish were highest between 500 and 900 m and very low shallower than 450 ... toothfish, the survey provided the opportunity to compare catch rates in 2012 with historical catch rates by ... CPUE analysis suggest that there has been no significant change in catch rates in the southern Ross Sea ...
Meeting Document : WG-SAM-12/29 : Auteur(s): S.M. Hanchet, S. Mormede, A. Dunn (New Zealand) and H.-S. Jo (Republic of Korea)