Resultados de la búsqueda
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Population of macaroni penguins Eudyptes chrysolophus at Marion Island, 1994/95 to 2002/03, with information on breeding and diet
decrease of 88% between 1979/80 and 2002/03, most of the decrease occurring after 1983/84. At Marion Island ... Abstract: There is indication that numbers of macaroni penguins Eudyptes chrysolophus at ... 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 : Autor(es): R.J.M. Crawford, J. Cooper and B.M. Dyer (South Africa)
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Foraging location and range of white-chinned petrels Procellaria aequinoctialis breeding in the south Atlantic
night (47%) was the same. Mean (31–34 km/h) and maximum (80 km/h) flight velocities were similar during ... Abstract: The foraging range and principal feeding areas of White-chinned Petrels breeding at ... distance per day during chick-rearing (71 km) than during incubation (91 km) but the proportion covered at ... and also at sites close to the South Orkney Islands: Illex argentinus on the Patagonian shelf ...
Meeting Document : WG-FSA-01/25 : Autor(es): S.D. Berrow, A.G. Wood and P.A. Prince (United Kingdom)
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Foraging location and range of white-chinned petrels Procellaria aequinoctialis breeding in the South Atlantic
covered at night (47%) was the same. Mean (31- 34 km/h) and maximum (80 km/h) flight velocities were ... Abstract: The foraging range and principal feeding areas of White-chinned Petrels breeding at ... Shag Rocks/South Georgia and also at sites close to the South Orkney Islands; Illex argentinus on the ...
Meeting Document : WG-FSA-99/20 : Autor(es): S.D. Berrow, A.G. Wood and P.A. Prince (United Kingdom)
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Dynamics of Notothenia rossii rossii size-age structure on the Kerguelen Islands shelf
of the stock, the major part of catches (more than 80%) was formed by repeated spawning fish. then as ... of the specialised fishery in 1985 and after the marbled rockcod by-catch at other fisheries was ...
Meeting Document : WG-FSA-94/04 : Autor(es): P.B. Tankevich (Ukraine)
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Variation in the distribution of Antarctic krill Euphausia superba around South Georgia
(PCA) provided good separation of these clusters using the first two axes (80 % of the total variance ... cruises and look particularly at differences between krill taken from the eastern and western ends of the ... krill were found in Weddell Sea water and that the length-frequency distributions at the western end of ... experience different conditions during transport to South Georgia and at either end of the island. Author(s ...
Meeting Document : WG-EMM-97/47 : Autor(es): Daly, H.I., Murray, A.W.A., Watkins, J.L.
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Evaluation of krill transport factor results in Subarea 48.2 in summer period of 1996
subarea 48.2 in the period of 19.02-07.03.96 are presented. The polygon of 80 x 240 miles was situated in ...
Meeting Document : WG-EMM-96/37 : Autor(es): Sushin, V.A., Kasatkina, S.M., Shnar, V.N., Abramov, A.M., Polischuk, M.I.
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Reproduction in Antarctic notothenioid fish - a review
it is not attained until 70–80% of the maximum length. The only exception is Champsocephalus gunnari ... % at spawning. Apart from a few nototheniid species the GSI of males is much less and typi6dlly only 15 ... –20% of that of females. Length at first spawning may be from 55% of Lmax onwards, but in many species ... at South Georgia which may begin spawning at about 40% of Lnax. Most species of the Seasonal Pack-ice ...
Meeting Document : SC-CAMLR-X/BG/12 : Autor(es): Delegation of Germany
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Revised biological parameters for the Antarctic skates Amblyraja georgiana and Bathyraja cf. eatonii from theRoss Sea
of B. cf. eatonii, but it is probably around 65–75 cm for males and 70–80 cm for females. Reasonable ... different estimates of median length at maturity. The lab estimates were based on small datasets that did ... , but observer data suggested that females matured at a larger size than males, whereas lab data ... insufficient and inaccurate data. Until better data are available, length at maturity should be regarded as the ...
Meeting Document : WG-FSA-10/27 : Autor(es): M.P. Francis (New Zealand)
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Linking predator and prey behaviour: contrasts between Antarctic fur seals and macaroni penguins at South Georgia
occurred in 80% of fur seal diet samples, with fish remains in 37% of samples. Penguin diets contained the ... combination of concurrent at sea (predator observations, net hauls and multi-frequency acoustics), and land ... more successful at exploiting krill. When unconstrained by chick-rearing (during March) penguins ... behaviour: contrasts between Antarctic fur seals and macaroni penguins at South Georgia Approval: Approved ...
Meeting Document : WG-EMM-10/P07 : Autor(es): C.M. Waluda, M.A. Collins, A.D. Black, I.J. Staniland and P.N. Trathan
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By-catch of juvenile Antarctic fish from krill (Euphausia superba Dana) fisheries in the South Georgia area, in 1992
-80 mm in May-June and 97 mm in late July. The mean growth rate of this species over this period is ... estimated at 0.35 mm per day. In May-June N.larseni juveniles were represented by fingerlings (mean length ... . The mean daily length increase in N.larseni is estimated at 0.09 mm. Juveniles of Euphausia superba ...
Meeting Document : WG-FSA-93/8 Rev. 1 : Autor(es): E.A. Pakhomov and S.A. Pankratov (Ukraine)