Search results
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Multiyear changes in distribution and abundance of Salpa thompsoni in the Western Antarctic Peninsula region
characterized by a circumpolar distribution and its appearance is clearly associated with the occurrence of the ... Antarctic Circumpolar Current (ACC). This area of the Southern Ocean is characterized by a relatively low ... productivity and high water temperature. In recent years the expansion of distribution range of this ... invertebrate species has been observed. This process may be a result of the ACC southward movement, which is ...
Meeting Document : WG-EMM-16/75 : Author(s): A. Panasiuk, A. Słomska, J. Wawrzynek, M. Konik and A. Weydmann
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Data on feeding and food objects of southern minke whales
Abstract: Presented research on feeding and the dietary structure by species of minke whales ... conducted in all four seasons. There have been no noticeable increase of the population size of large whales ... over the years after the cessation of whaling. The role of a short and profitable from the energy point ... of view trophic chain «phytoplankton- krill- baleen whales», which is of main interest due to the ...
Meeting Document : SC-CAMLR-XXVI/BG/25 Rev. 1 : Author(s): Delegation of Ukraine
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An interlaboratory comparison of ages estimated for Dissostichus eleginoides from the Argentine Sea, southwest Atlantic Ocean
Abstract: To examine consistency among laboratories in age estimation of Patagonian toothfish and ... the effects on readings of different otolith processing methods, scales and otoliths were taken from ... Institute for Fisheries Research and Development (INIDEP) Argentine, National Institute of Water and ... University, Norfolk, Virginia, United States of America. (CQFE). As a consequence of the exchange of otoliths ...
Meeting Document : WG-FSA-04/45 : Author(s): M.C. Cassia (Argentina), P.L. Horn (New Zealand) and J.R. Ashford (USA)
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Modelling the dynamics of krill populations in the Antarctic Peninsula region
Abstract: The current long-term estimates of mean recruitment rates suggest that the population ... estimates of recruitment to the population can be used to model in detail interannual variation in the ... population dynamics of krill and estimate the expected mortality rates. A number of models of the population ... dynamics of krill are used to assess to what extent they can explain the observed changes in the density of ...
Meeting Document : WG-EMM-99/56 : Author(s): E.J. Murphy (United Kingdom), A. Constable (Australia) and D. Agnew (United Kingdom)
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ALLOCATING THE PRECAUTIONARY CATCH LIMIT FOR KRILL AMONGST THE SMALL-SCALE MANAGEMENT UNITS IN AREA 48: THE IMPLICATIONS OF DATA UNCERTAINTIES
fishery in Statistical Area 48. This procedure will involve, inter alia, subdivision of the precautionary ... catch limit among a set of small-scale management units. So far the Working Group has identified six ... candidate methods for subdividing the catch limit and rejected one of them as unsuitable (Option 1 ... - subdivision based on the distribution of historical catches). In recognising the need for a “staged ...
Meeting Document : WG-EMM-08/12 : Author(s): P.N. Trathan and S.L. Hill (United Kingdom)
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Analysis of scientific observer data from the Saga Sea 2006–2007
Abstract: UK observers were present during all fishing operations of the Norwegian flagged Saga ... Sea from June 2006 to June 2007. This paper presents an initial analysis of the krill and fish bycatch ... sampled. Although a reasonably large number of continuous and conventional trawls were undertaken, the ... distribution of these trawls in time and space was not random. The vessel tended to fish with one trawl type ...
Meeting Document : WG-EMM-07/16 : Author(s): P. Orr, J. Hooper, D. Agnew, J. Roe, G. Doherty and A. Pryor
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Influence of krill availability on humpback whale breeding success
Abstract: The abundance of the Antarctic krill (Euphausia superba) has been declining in the ... western Antarctic Peninsula (WAP), probably as a consequence of the effects of the considerable increase ... survival) of the krill consumers may be compromised. In the present study, we investigated the reproductive ... success of humpback whales (Megaptera novaeangliae) from Breeding Stock G in relation to krill density ...
Meeting Document : WG-EMM-18/P15 : Author(s): E. Seyboth, F. Félix, M.-A. Lea, L. Dalla Rosa, G. Watters, K. Reid and E. Secchi
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Reports on biological information of toothfish with special reference to bycatch, depredation and spawning dynamics in Division 58.4.4 a & b by Shinsei maru No. 3 during 2008–14 seasons
weight and number, accounting for 93% and 76% of the total catch, respectively, among total of 16 species ... method and grenadier bycatch method by Gasco et al. (2014) using two size levels of unit cell, and ... SSRU 58.4.4bC. The depredation rate in weight of whales toward toothfish was estimated to be only 3.8 ... -4.8 % in SSRU 58.4.4bC during 2008-12 using the CPUE method, while the presence/absence of whales was ...
Meeting Document : WG-FSA-15/21 : Author(s): K. Taki and T. Ichii (Japan)
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Interannual changes in body fat condition, stomach content mass and distribution of minke whales in Antarctic Areas IV and V
Abstract: As an indicator of body fat condition, interannual variability in girth of minke whales ... of minke whales in Antarctic Areas IV (70°-130° E) and V (130° E-170°W) from 1989/90 to 1994/95. Of ... 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 ...
Meeting Document : WG-EMM-97/18 : Author(s): Ichii, T., Nishiwaki, S., Tamura, T., Fujise, Y., Matsuoka , K.
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Otolith elemental signatures reveal habitat shift of Electrona carlsbergi
Abstract: Electron subantarctic (Electrona carlsbergi) is one of important pelagic myctophidae ... which circumpolar distributed between the warm waters of the subtropical confluence zone and the ... Southern Ocean. The distribution, life history and migration pattern of this species were examined using ... the biological data in 1990s, however, the habitat shift of this species was still unclear. The ...
Meeting Document : WG-FSA-17/65 : Author(s): L. Wei and G.P. Zhu