Resultados de la búsqueda
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Foraging interactions of wandering albatrosses Diomedea exulans breeding on Marion Island with longline fisheries in the southern Indian Ocean
attempt to scavenge baited hooks deployed by long-line fishing vessels. We studied the foraging ecology of ... Wandering Albatrosses breeding on Marion Island in order to assess the scale of interactions with known long ... -line fishing fleets. During incubation and large chick-rearing, birds foraged farther away from the ... overlap with the local Patagonian toothfish Dissostichus eleginoides long-line fishery. Tracks of birds ...
Meeting Document : WG-FSA-01/10 : Autor(es): D.C. Nel, P.G. Ryan, J.L. Nel, N.T.W. Klages (South Africa), R.P. Wilson (Germany) and G. Robertson (Australia)
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ASSESSMENT OF PATAGONIAN TOOTHFISH POPULATION IN THE NORTH OF SUBAREA 48.4 USING DATA FROM A FOUR-YEAR TAGGING EXPERIMENT
Abstract: 1. The bycatch TAC of 12 tonnes of macrourids was reached in 2008/09 triggering the ... early closure of the fishery with only 58.9 t of the 75 t TAC of D. eleginoides taken; 2. The target ... in 2008/09, slightly under the target of 375 for the full 75 tonnes of catch; 3. There were 29 D ... . eleginoides tag returns in 2008/09, bringing the total from all seasons up to 54 tag recaptures; 4. A total of ...
Meeting Document : WG-FSA-09/17 : Autor(es): J. Roberts and D.J. Agnew (United Kingdom)
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Using production models to assess the stock of Paralomis spinosissima around South Georgia Island
) data from the 1991/92 fishery for Paralomis spinosissima around South Georgia Island. The four models ... recruitment function. The best fitting model was Model 1. Model 1 had three parameters: an estimate of initial ... abundance (N0), an estimate of the scaling coefficient relating abundance to CPUE (q), and a recruitment ... parameter (a). The generalized likelihood ratio was used to place 95% confidence bounds around the parameter ...
Meeting Document : WG-FSA-93/23 : Autor(es): George Watters (USA)
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The effects of an experimental hake Merluccius capensis/paradoxus longline fishery on Procellariiform seabirds in South Africa - a preliminary investigation
Abstract: Due to the detrimental effect longline fisheries have had on seabirds in other parts of ... the world, concern was raised as to the effect an experimental Hake longline fishery would have on ... 100% of the catch on longlines during setting despite the fact that they were not the most abundant ... species around fishing vessels either during the day or night. Extrapolations showed that 2 vessels were ...
Meeting Document : WG-FSA-95/21 : Autor(es): Barnes, K.
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The Patagonian toothfish: biology, ecology and fishery
supports valuable fisheries throughout the Southern Ocean. D. eleginoides are found on the southern shelves ... and slopes of South America and around the sub-Antarctic islands of the Southern Ocean. Patagonian ... toothfish are a long-lived species (> 40 years), which initially grow rapidly on the shallow shelf areas ... , biochemistry, parasite fauna and tagging indicate a high degree of isolation between populations in the Indian ...
Meeting Document : WG-FSA-10/P05 : Autor(es): M.A. Collins, P. Brickle, J. Brown and M. Belchier
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The Ross Sea cephalopod community: insights from stable isotope analysis
identified as having relatively high importance in the food-web of the Ross Sea. However, information on the ... trophic ecology of the cephalopod assemblage of the Ross Sea region is poor. Stable isotope signatures of ... taxa sampled from the Ross Sea region. Samples were acquired through scientific trawls and from ... stomachs of Antarctic toothfish Dissostichus mawsoni returned from the longline fishery. Most octopods were ...
Meeting Document : WG-EMM-12/55 : Autor(es): D.R. Thompson, M.H. Pinkerton, D.W. Stevens (New Zealand), Y. Cherel (France), S.J. Bury (New Zealand)
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Microincrement analysis in otoliths of Notothenia rossii fingerlings from the South Shetland Islands to estimate early life history timings and to validate annulus formation
timings and to validate annulus formation. Although in the literature it has been reported that N. rossii ... in the South Shetland Islands hatches in spring, our daily ring back counting in otoliths from the ... between February and March and another in winter between July and August. The maximum and minimum ages ... estimated for the pelagic blue phase and demersal brown phase fingerlings were respectively 227 and 240 days ...
Meeting Document : WG-FSA-12/04 : Autor(es): E. Barrera-Oro (Argentina) and M. La Mesa (Italy)
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Survey results on abundance and biology of toothfish in Division 58.4.3b by Shinsei maru No.3 during 2006/07–2011/12 and proposal of the consecutive survey in 2012/13
information for the stock status and biology of toothfish in the Division 58.4.3b (Banzare Bank), using a ... ranged from 22 to 148 during the six cruises. Total catch of Dissostichus spp. ranged from 9 to 108 ton ... downward tendencies with years. D. mawsoni mainly occurred in the shallower areas > 1 200 m but ... decreased in the CPUE as the depth decreased, while D. eleginoides mainly occurred in 600 – 1 000 m depths ...
Meeting Document : WG-FSA-12/56 : Autor(es): K. Taki, T. Iwami, M. Kiyota and T. Ichii (Japan)
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Revised stock assessment of the Patagonian toothfish, Dissostichus eleginoides, in research block C of Division 58.4.4 (Ob & Lena Banks) using CASAL
Abstract: Regarding the low levels of stocks of Dissostichus spp. and the high levels of IUU ... fishing, CCAMLR decided to close the fishery in 2002 in division 58.4.4. Since 2008 only one vessel ... 24-01. France notifies its wish to collaborate in this research fishery over the coming years in ... order to participate in the tagging program and achieve a robust stock assessment. A preliminary ...
Meeting Document : WG-FSA-14/06 : Autor(es): A. Rélot-Stirnemann (France)
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Towards the development of an assessment of stock abundance for Subarea 88.2 SSRUs 88.2C–G
Abstract: This paper frames a discussion for improving the assessment of toothfish abundance for ... SSRUs 88.2C–G. We initially provide a characterisation of the fishery and a summary of available tagging ... fish have been recaptured. It is likely that the lack of recaptures of tagged fish in this region has ... been caused primarily by the poor spatial overlap of released tagged fish with subsequent fishing ...
Meeting Document : WG-FSA-14/59 : Autor(es): S.M. Hanchet and S.J. Parker (New Zealand)