Résultats de la recherche
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Age validation of juvenile Notothenia rossii at Potter Cove, South Shetland Islands, using mark-recapture data
agreement with the known pattern of growth in summer. Likewise, an analysis in selected specimens showed ... good consistency between the numbers of sclerites deposited in scales and the time of fish release. The ... simultaneous counting of the annuli with complete correspondence.The growth in length of fish ranged from 0.5 ... Abstract: Among all validation methods of age determination in fish, release of known age and ...
Meeting Document : WG-FSA-13/P01 : Auteur(s): E. Moreira, E. Barrera-Oro and M. La Mesa
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Review of some assumptions for modelling Patagonian toothfish dynamics at CCAMLR Subarea 48.3
cases were similar, there were considerable differences in assumptions and implementations of the two ... relationship is also analyzed, in relation with the current underlying assumption of fish stock resilience ... Abstract: During the year 2005 meeting of the WG-FSA two different methods for assessing ... Patagonian toothfish stock in CCAMLR Subarea 48.3 were available to the Working Group: CASAL and ASPM (WG-FSA ...
Meeting Document : WG-FSA-SAM-06/13 : Auteur(s): A. Aubone, P.A. Martínez and O.C. Wöhler (Argentina)
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Population of macaroni penguins Eudyptes chrysolophus at Marion Island, 1994/95 to 2002/03, with information on breeding and diet
demonstration of a significant decrease in the overall population. Numbers of occupied nests at other colonies ... correlated. Both showed a marked decrease in 1998/99, after the El Niño of 1997/98. In most seasons from 1994 ... subantarctic Marion Island have decreased since the early 1980s. Estimates of the population at the island fell ... large colonies, at Bullard Beach and Kildalkey Bay, account for about 85% of the overall population. At ...
Meeting Document : WG-EMM-03/15 : Auteur(s): R.J.M. Crawford, J. Cooper and B.M. Dyer (South Africa)
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Trends of Antarctic fur seal population at SSSI No. 32, Livingston Island, South Shetlands, Antarctica
had to model the population at the latter site, in order to have a complete estimate of the population ... . From this, we estimated an overall increase of 17% in the total population, including in this figure a ... Abstract: We update in this paper the previously reported model for the Antarctic fur seal ... , South Shetland, Antarctica. We also discuss the current reliability of the model and related population ...
Meeting Document : WG-EMM-99/16 : Auteur(s): R. Hucke-Gaete, D. Torres, A. Aguayo, J. Acevedo and V. Vallejos (Chile)
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Growth of Antarctic krill Euphausia superba at South Georgia
Abstract: Antarctic krill Euphausia superba has a central role in the ecosystem of the Southern ... dynamics. The length of Antarctic krill in the diet of Antarctic fur seals Arctocephalus gazella at South ... Antarctic Peninsula region. The effect of geographical variation in growth rate on the population structure ... in the interpretation of krill life cycles. Author(s): K. Reid (United Kingdom) Title: Growth of ...
Meeting Document : WG-EMM-01/18 : Auteur(s): K. Reid (United Kingdom)
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Proposals on standardization of toothfish resource research
discussed in the context of discussion at the Scientific Committee and the CCAMLR Commission in 2018 ... regarding the longline survey methodology in Division 58.4.1. It is shown that the methodology of modern ... mandatory for all ships participating in the survey. At the same time, methodological aspects of the multi ... -year international research program implemented in Subdivision 58.4.1., such as the lack of ...
Meeting Document : WG-SAM-2019/34 : Auteur(s): S. Kasatkina
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Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean, Antarctic
mainly caught in the deeper slope >1500 m. The separation of the two species by depths may be related ... species. The mean total length (TL) of females was significantly larger than that of males for both ... fishing season. D. eleginoides was mainly caught in the shallower bank <1000 m, while D. mawsoni was ... to the physical intolerance to the cooler temperature by the lack of antifreeze for the former ...
Meeting Document : WG-FSA-10/47 : Auteur(s): K. Taki, M. Kiyota, T. Ichii and T. Iwami (Japan)
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Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean, Antarctic
mainly caught in the deeper slope >1500 m. The separation of the two species by depths may be related ... species. The mean total length (TL) of females was significantly larger than that of males for both ... fishing season. D. eleginoides was mainly caught in the shallower bank <1000 m, while D. mawsoni was ... to the physical intolerance to the cooler temperature by the lack of antifreeze for the former ...
Meeting Document : WG-SAM-10/16 : Auteur(s): K. Taki, M. Kiyota, T. Ichii and T. Iwami (Japan)
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Infectious diseases of Antarctic penguins: current status and future threats
occurred. The majority of these events have occurred since the year 2000 in regions that will likely be ... valuable as indicators of the status of marine ecosystem health and are an indicator-species used in the ... and compilation of disease datasets) for Adélie penguins in the Western Antarctic Peninsula, the Ross ... tourists in the future. Three main areas are likely to be impacted by this increase in use and by ...
Meeting Document : WG-EMM-14/53 : Auteur(s): W.W. Grimaldi, P.J. Seddon, P.O.B. Lyver, S. Nakagawa and D.M. Tompkins (New Zealand)
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Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophrys and D. chrysostoma at Campbell Island, New Zealand, 1942–96
in numbers of the Grey-headed Albatross has continued into the 1990s, averaging annually between 3.0 ... region. The steep decline of Black-browed Albatross numbers in the 1970s was concomitant with the ... development of this fishery in the foraging region of the Campbell Island birds. Currently, the slight ... Abstract: The numbers of Black-browed Albatrosses Diomedea melanophrys and Grey-headed ...
Meeting Document : WG-FSA-04/58 : Auteur(s): S.M. Waugh (New Zealand), H. Weimerskirch (France), P.J. Moore and P.M. Sagar (New Zealand)