Résultats de la recherche
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Male krill grow fast and die young
classes of adult krill was generally high in krill of 30-35 mm total length, always low in 38-42 mm krill ... examined with an extensive dataset derived from scientific surveys in the Indian Ocean sector and the ... southwest Atlantic sector, and from the krill fishery in the Southern Ocean. The percentage of males in size ... , sometimes showed higher values in 45-50 mm krill, but always decreased in the largest krill (>50 mm ...
Meeting Document : WG-EMM-07/P6 : Auteur(s): S. Kawaguchi, L.A. Finley, S. Jarman, S.G. Candy (Australia), R.M. Ross, L.B. Quetin (USA), V. Siegel (Germany), W. Trivelpiece (USA), M. Naganobu (Japan) and S. Nicol (Australia)
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Results and standing stock biomass estimates of finfish from the 2001 US AMLR bottom trawl survey of the South Shetland Islands (Subarea 48.1)
. rossii have not recovered even after commercial fishing has ceased for 20 years. The overall abundance of ... bottom trawl survey in March, 2001 of the South Shetland Islands. Information on species composition ... Survey. For most species, the standing stock has decreased slightly, although in most cases the 95 ... finfish in the South Shetland Islands has yet to reach a level at which commercial exploitation would be ...
Meeting Document : WG-FSA-01/33 Rev. 1 : Auteur(s): C.D. Jones, K.-H. Kock, D. Ramm, J. Ashford, S. Wilhelms, T. Near, N. Gong and H. Flores
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Distribution and ecology of Chaenocephalus aceratus (Channichthyidae) around South Georgia and Shag Rocks (Southern Ocean).
that growth was fast in the first five years with males and females attaining lengths at first spawning ... demersal fish living on the South Georgia shelf where it is caught in low numbers as by-catch in the ... in diet from Euphausia superba and mysids to benthic fish and decapods observed to begin at 250 mm TL ... . In larger fish (> 500 mm TL) the diet was dominated by fish. C. aceratus diet is sufficiently ...
Meeting Document : WG-FSA-07/P5 : Auteur(s): W.D.K Reid, S. Clarke, M.A. Collins and M. Belchier. (Polar Biol., 30 (12): 1523–1533 (2007))
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Biology, distribution and abundance of Antarctic krill (Euphausia superba) and by-catch
collected from 34 stations of fishing area 58 in Indian Ocean sector of Antarctic region between lat.57°53 ... 'S to 61°13'S and long.30°02'E to 40°05'E. These were analysed onboard FORV Sagar ... trawl. The length frequency analysis indicated a bimodel distribution with 19-20 mm and 53-54mm as the ... most abundant size in the fishing area 58. The average sex ratio of male and female Euphausia superba ...
Meeting Document : WG-EMM-98/37 : Auteur(s): A. Anrose, Z. Klusek, M.K.R. Nair and M. R. Bhoopendranath (India)
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Power analyses of CEMP indices for penguins at Admiralty Bay and fur seals at Cape Shirreff and Seal Island
trends over a period of 20 years may be feasible for most indices. Detecting trends in indices A8 and C2 ... values of transformed CEMP indices to breeding year are equal to zero when, in fact, these trends ... probability of rejecting the null hypotheses when they were, in fact, true), three periods of monitoring, and ... 21 levels of annual percent change in the CEMP indices. We conducted a number of “combined analyses ...
Meeting Document : WG-EMM-03/52 : Auteur(s): G.M. Watters, R.P. Hewitt, W.Z. Trivelpiece and M.E. Goebel (USA)
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Analysis of the by-catch of Channichthys rhinoceratus and Lepidonotothen squamifrons from the fisheries at Heard Island and the McDonald Islands (Division 58.5.2)
squamifrons are among the most common species bycaught in the toothfish and mackerel icefish trawl fisheries ... at Heard Island and McDonald Islands (HIMI) (Division 58.5.2). These species are rarely taken in the ... .). In the toothfish fishery both species are taken, whereas C. rhinoceratus is much more common in the ... , approximately 20 t of C. rhinoceratus and 9 t of L. squamifrons were caught annually. The commercial and ...
Meeting Document : WG-FSA-12/24 : Auteur(s): G.B. Nowara, D.C. Welsford, S.G. Candy and T.D. Lamb (Australia)
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SUMMER SURVEY OF FUR SEALS AT PRINCE EDWARD ISLAND, SOUTHERN INDIAN OCEAN
11.4% per year from 2001. With an estimated 810 pups, the Antarctic fur seal is still in the rapid ... 9.3% per year between 1987/1988 and 2001/2002, and the population is in the mature phase of population ... intrinsic rate of natural increase has declined to –0.3% per year over the last seven years, compared to the ... gazella and Subantarctic fur seals A. tropicalis were determined at Prince Edward Island during 16–20 ...
Meeting Document : WG-EMM-10/P15 : Auteur(s): M.N. Bester, P.G. Ryan and J. Visagie
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Committee for Environmental Protection: 2016 Annual Report to the Scientific Committee of CCAMLR
second joint CEP-SC-CAMLR workshop was held May 19-20, 2016 in Punta Arenas, Chile, just prior to the CEP ... both. In order to avoid duplicate reporting between the two committees, and following discussions ... : climate change and environmental monitoring. Workshop results and recommendations are discussed in a ... Environmental Protection (CEP) has been steadily increasing over the last few years to the mutual benefit of ...
Meeting Document : SC-CAMLR-XXXV/BG/09 : Auteur(s): CEP Observer to SC-CAMLR (Dr P. Penhale, USA)
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A new method for the measurement of Antarctic krill Euphausia superba Dana from predator food samples
maturity stage which can be discriminated in predator food samples. The use of removed carapace length as a ... inaccurate, providing that the animal may be staged. Author(s): H.J. Hill (United Kingdom) Title: A new ...
Meeting Document : WG-CEMP-90/40 : Auteur(s): H.J. Hill (United Kingdom)
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Krill population trends
concentrated for the last 20 years. There have been suggestions of changes in the distribution and abundance of ... intense inter- and intra-annual variability of krill abundance within regions. These fluctuations in ...
Meeting Document : CCAMLR-IWC-WS-08/11 : Auteur(s): Tarling, G., Watkins, J., Quetin, L., Reiss, C., Atkinson, A., Ross, R., Pakhomov, E., Kawaguchi, S., Nicol, S., Siegel, V.