Resultados de la búsqueda
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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 : Autor(es): 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 : Autor(es): 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 : Autor(es): 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 : Autor(es): 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 : Autor(es): 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 : Autor(es): S.M. Waugh (New Zealand), H. Weimerskirch (France), P.J. Moore and P.M. Sagar (New Zealand)
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Impact of predation by Cape fur seals Arctocephalus pusillus on Cape gannets Morus capensis at Malgas Island, Western Cape, South Africa
000 in 2005/06. This amounted to about 29%, 83% and 57% of the overall production of fledglings at the ... sustainable. There was a 25% reduction in the size of the colony, the second largest of only six extant Cape ... increase in the seal population and altered management of the islands. At Malgas Island, most gannet ... (Morus capensis) fledglings around Malgas Island in the 2000/01 breeding season, 11 000 in 2003/04 and 10 ...
Meeting Document : WG-EMM-06/9 : Autor(es): A.B. Makhado, R.J.M. Crawford and L.G. Underhill (South Africa)
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Diet variability and reproductive performance of macaroni penguins (Eudyptes chrysolophus) at Bird Island, South Georgia
(Euphausia superba) was the main prey in 17 out of 22 years. Amphipods (Themisto gaudichaudii) were the main ... . frigida) in 2000. There was no clearly dominant prey group in 1999. The five-year average proportion of E ... frequency occurrence of T. gaudichaudii both increased with a decreasing proportion of E. superba in the ... gross energy content of individual meals was often above average in years when the diets contained fewer ...
Meeting Document : WG-EMM-12/17 : Autor(es): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan (United Kingdom)
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Antarctic icefishes (Channichthyidae) – a unique family of fishes – a review
haemoglobin. With the exception of one species, icefish live only in the cold – stable and oxygen – rich ... environment of the Southern Ocean. It is still questionable how old icefish are in evolutionary terms: they ... – winter. The incubation period spans from 2 months in the north of the Southern Ocean to more than 6 ... Abstract: Icefish are a family of species unique among vertebrates in that they possess no ...
Meeting Document : WG-FSA-04/10 : Autor(es): K.-H. Kock (Germany)
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Congruent, decreasing trends of Gentoo Penguins and Crozet Shags at sub-Antarctic Marion Island suggest food limitation through common environmental forcing
] melanogenis breeding annually at Marion Island, one of South Africa’s Prince Edward Islands in the south-west ... the compositions of their diets. Therefore, trends in their populations may be driven by food ... between the mid-1990s and the mid-2000s, exhibited a partial recovery in the late-2000s and then decreased ... to their lowest recorded levels in 2012/13. In both instances, the partial recoveries in the late ...
Meeting Document : WG-EMM-14/P09 Rev. 1 : Autor(es): R.J.M. Crawford, B.M. Dyer, L. Upfold and A.B. Makhado