Результаты поиска

1. Antarctic icefishes (Channichthyidae) – a unique family of fishes – a review

   Abstract:  Icefish are a family of species unique among vertebrates in that they possess no ... 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 ... may not be older than 6 MA, i.e. they evolved well after the Southern Ocean started to cool down or ...

   Meeting Document : WG-FSA-04/10 : Автор(ы): K.-H. Kock (Germany)

2. Identification and speciation of Antarctic skates

   Bathyraja n. sp. cf eatonii. There was no sequence divergence among samples of B. n. sp. “dwarf” from the ... (COI) were sequenced in 9 species of Bathyraja skates from the Southern Oceans and New Zealand. Based ... on significant sequence divergence, the species that has been referred to as Bathyraja eatonii from ... the Antarctic shelf and slope is a species distinct from B. eatonii from the Kerguelen Plateau (the ...

   Meeting Document : WG-FSA-07/27 : Автор(ы): P.J. Smith, C.D. Roberts, A.L. Stewart, M. McVeagh and C.D. Struthers (New Zealand)

3. Measurement of ocean temperatures using instruments carried by Antarctic fur seals

   Abstract:  The study aimed to test the utility of instruments deployed on marine mammals for ... measuring physical oceanographic variation and, using this method, to examine temperature variation in the ... recorders (TDRs) fitted to lactating Antarctic fur seals foraging from the coast of South Georgia ... longitude), and at a vertical scale of 10 m. However, there was no significant correlation between ...

   Meeting Document : WG-EMM-01/56 : Автор(ы): I.L. Boyd, E.J. Hawker, M.A. Brandon and I.J. Staniland (United Kingdom)

4. Mercury concentrations of five species of Antarctic fish collected from CCAMLR Subareas 88.1 and 88.2

   showed no trends with any factors for M. whitsoni. The low levels of mercury in D. mawsoni relative to ... Abstract:  The mean mercury level for the D. eleginoides 1998 sample was 0.43 mg/kg-1, which is ... slightly lower than the permissible level of 0.5 mg/kg-1 set by the New Zealand Food Safety Authority ... (NZFSA). In contrast, mean levels of mercury for D. mawsoni were 0.10 mg/kg-1 in the 1998 samples and ...

   Meeting Document : WG-FSA-07/24 : Автор(ы): S.M. Hanchet, D.M. Tracey, A. Dunn, P.L. Horn and N. Smith (New Zealand)

5. Review of biological parameters for Ross Sea skates

   Abstract:  Biological parameters were reviewed and updated for the two main species of skates ... taken as bycatch in the Ross Sea toothfish fishery: Amblyraja georgiana and Bathyraja cf. eatonii ... . Differences in length-weight relationships among regions raise doubt about the conspecificity of A. georgiana ... from the Ross Sea and South Georgia, and of B. cf. eatonii from the Ross Sea and Heard Island and the ...

   Meeting Document : WG-FSA-06/31 : Автор(ы): M.P. Francis (New Zealand)

6. Diet variability and reproductive performance of macaroni penguins (Eudyptes chrysolophus) at Bird Island, South Georgia

   . frigida) in 2000. There was no clearly dominant prey group in 1999. The five-year average proportion of E ... breeding at Bird Island, South Georgia during the crèche period (January and February) between 1989 and ... 2010. Crustaceans were the main prey accounting for over 90 % of the diet by mass. Antarctic krill ... (Euphausia superba) was the main prey in 17 out of 22 years. Amphipods (Themisto gaudichaudii) were the main ...

   Meeting Document : WG-EMM-12/17 : Автор(ы): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan (United Kingdom)

7. An evaluation of reduced target strength estimates reported for krill (Euphausia superba)

   on the same experiment and report new calculations of the target strength of krill (Euphausia superba ... assumptions made in calculating target strength. Whether the results of these papers are valid is critically ... important, given that they are being cited as a basis for increasing the estimates of krill standing stock ... in the Antarctic. The weaknesses in their data stem from the methods used to calculate target ...

   Meeting Document : WG-KRILL-90/13 : Автор(ы): M.C. Macaulay (USA)

8. A simulation study of krill fishing by an individual Japanese trawler

   Abstract:  A model is set up for the operation (which includes both searching and fishing) of a ... Japanese krill trawler over a half-month period, and the output is compared to statistics from a sample of ... data from the commercial fishery. Twenty-four candidate "CPUE" biomass indices are considered ... , and their performance investigated in response to six different ways in which the overall krill ...

   Meeting Document : SC-CAMLR-VI/BG/38 : Автор(ы): D.S. Butterworth (United Kingdom)

9. Coastal weather drives foraging behaviour of chinstrap penguins, Pygoscelis antarctica

   to the season where no such downwelling was detected, suggesting that changes in climate-driven ... indicators because their performance is presumed to be linked to the overall function of the ecosystem that ... supports them. In the southwest Atlantic sector of the Southern Ocean, Antarctic krill (Euphausia superba ... the ecosystem in an adaptive framework for sustainably managing krill catch levels, performance ...

   Meeting Document : WG-EMM-18/P14 : Автор(ы): A.D. Lowther, P. Trathan, A. Tarroux, C. Lydersen and K.M. Kovacs

10. Report on fish by-catch during exploratory fishing activities in Division 58.4.3a (Elan Bank) between 2008 and 2018

    Abstract:  We report on objective 2 “inform estimations of the distribution, relative abundance ... , and life history of the main bycatch species” of the suspended research plan on Patagonian toothfish ... analyzed bycatch composition in number and biomass during the period 2008-2018 to investigate the inter ... -annual variations in bycatch patterns, spatial distribution and biological parameters of the main bycatch ...

    Meeting Document : WG-FSA-2019/56 : Автор(ы): C. Péron, C. Chazeau, N. Gasco and F. Massiot-Granier

Страницы