Resultados de la búsqueda
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Factors affecting the growth rate and mass at weaning of Antarctic fur seal pups at Bird Island, South Georgia
maternal characteristics in 1988 or 1989. However in 1990 there was a negative relationship between growth ... the pups influenced the nature and magnitude of sex differences in estimated growth rates. Growth ... , maternal investment was greater in sons than daughters because males were heavier at birth and older at ... conditions that normally exist, individual differences in the growth of pups are most likely influenced by ...
Meeting Document : WG-CEMP-93/09 : Autor(es): N.J. Lunn, I.L. Boyd, T. Barton and J.P. Croxall (United Kingdom)
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Large-scale oceanographic fluctuations drive Antarctic petrel survival and reproduction
predict variation in the demographic parameters of Antarctic seabirds. First, we used a long-term dataset ... that most of the variation in both reproductive success, timing of hatching, and survival of Antarctic ... petrels can be accurately modeled using the two modes of large-scale climate variability in Antarctica. e ... in the global patterns of climatic variability will generally have detrimental e ects on populations ...
Meeting Document : WG-EMM-16/P14 : Autor(es): S. Descamps, A. Tarroux, S.-H. Lorentsen, O.P. Love, Ø. Varpe and N.G. Yoccoz
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Linking acoustic scattering coefficient to krill fishery data: feasibility of estimating krill abundance using fishing survey
Abstract: Antarctic krill (Euphausia superba Dana) is a key species in the Southern Ocean ... fisheries. In this paper, using the multi-frequency acoustic data and the fishery data, the relationship ... higher than average catch of night trawls. The average thickness of krill swarm in the daytime was ... that at night, with the maximum NASC between 160 and 180 m in depth. Both CPUA and CPUE at the ...
Meeting Document : WG-EMM-17/44 : Autor(es): T. Wang, G.P. Zhu, J.F. Tong and L.X. Xu
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Otolith elemental signatures reveal habitat shift of Electrona carlsbergi
waters of sub-Antarctic zone and spend the first year of life in this region. Those individuals move ... the biological data in 1990s, however, the habitat shift of this species was still unclear. The ... . carlsbergi hatched in two different areas, E. carlsbergi with Type I otolith could hatched in the oceanic ... Type II otolith could hatched in the coastal waters and are transported (or moved positively) across ...
Meeting Document : WG-FSA-17/65 : Autor(es): L. Wei and G.P. Zhu
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Brief report on scientific observation on the fishery vessel Mellas (FAO Statistical Area 41, January to July 2006)
Abstract: Materials on results of scientific observation in fishery cruise on the longliner ... “Mellas”, operating under the Ukrainian flag in FAO statistical area 41 in the southwest Atlantic outside ... ) fisheries are submitted. The data on volume of the biological material collected in the cruise, the data on ...
Meeting Document : WG-FSA-06/13 : Autor(es): S. Usachev (Ukraine)
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Krill conversion factors
of different krill products are examined and a range of values produced. These are broadly in line ... with those currently in use although the differences are such that use of the traditional factors may ... practice in the fishery, if it is then the use of any of the conversion factors will result in a serious ...
Meeting Document : WG-EMM-01/39 : Autor(es): I. Everson (United Kingdom)
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Proposal for a revised summary table used for assessment of new and ongoing research plans
Abstract: At WG-SAM-2019, it was highlighted that some of the language in the table used to ... assess research plans in data-poor fisheries was ambiguous, in particular to delegates that do not have ... English as their first language. In this paper, we propose some revisions to the table to attempt to ...
Meeting Document : WG-FSA-2019/55 : Autor(es): C. Péron and D. Welsford
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Cephalopods and mesoscale oceanography at the Antarctic polar front: satellite tracked predators locate pelagic trophic interactions
Abstract: Predator data and exploratory fishing in the Scotia Sea have revealed the presence of ... cephalopod stocks in the Antarctic Polar Frontal Zone (PFZ). This is a vast, remote region where large ... monitor foraging at sea in January-March 1994. A foraging area at the PFZ, north of South Georgia, was ... RMT25 sampled 200 m layers to 1000 m in daylight and darkness. Cephalopods were simultaneously recovered ...
Meeting Document : WG-EMM-96/12 : Autor(es): Murphy, E.J., Trathan, P.N., White, M.G., Bone, D.G., Hatfield, E.M.C., Rodhouse, P.G., Prince, P.A., Watkins, J.L.
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OTOLITH-BASED AGEING OF THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS: MODELLING FIXED AND RANDOM READER ERROR USING MULTIPLE READINGS OF A REFERENCE COLLECTION
calibration require an ageing error matrix as input in order to adequately account for uncertainty in the data ... were modelled in two stages. In the first stage the frequency of the absolute value of IE, the AIE ... age classes were modelled using continuation ratios and predicted proportions in each AIE class ... to the AIE 0 class as readability improved while, in general, it increased as age increased. To model ...
Meeting Document : WG-FSA-09/21 : Autor(es): S.G. Candy, G.B. Nowara, D.C. Welsford and J.P. McKinlay (Australia)
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OTOLITH-BASED AGEING OF THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS: MODELLING FIXED AND RANDOM READER ERROR USING MULTIPLE READINGS OF A REFERENCE COLLECTION
calibration require an ageing error matrix as input in order to adequately account for uncertainty in the data ... were modelled in two stages. In the first stage the frequency of the absolute value of IE, the AIE ... age classes were modelled using continuation ratios and predicted proportions in each AIE class ... to the AIE 0 class as readability improved while, in general, it increased as age increased. To model ...
Meeting Document : WG-SAM-09/07 : Autor(es): S.G. Candy, G.B. Nowara, D.C. Welsford and J.P. McKinlay (Australia)