Résultats de la recherche
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Preliminary assessment of toothfish in Subarea 48.3
were high numbers of the 2001 cohort in commercial catches in 2009 onwards. It is likely that it is ... due to a combination of a strong 2001 cohort and a change in selectivity for the commercial fleet, but ... surveys and the stabilisation of both SSB and CPUE that a long-term yield in the region of 2 000 tonnes ... Abstract: As with the 2009 assessment of Subarea 48.3, there is still uncertainty as to why there ...
Meeting Document : WG-FSA-11/33 Rev. 1 : Auteur(s): T. Peatman, R.E. Mitchell, G. Parkes and D.J. Agnew (United Kingdom)
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Sexual dimorphism and sexual segregation in foraging strategies of northern giant petrels Macronectes halli during incubation
dimorphism, in terms of the intersexual food competition hypothesis, on foraging and fasting strategies of ... Abstract: Giant petrels (Macronectes spp) are the most sexually dimorphic of all seabirds. We ... used satellite-tracking and mass change during incubation to investigate the influence of sexual size ... , duration of foraging trips) was greater for females than for males. In contrast, foraging efficiency ...
Meeting Document : WG-FSA-99/38 : Auteur(s): J. González-Solís, J.P. Croxall and A.G. Wood (United Kingdom)
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Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index
critical level of krill availability which is just enough to maintain the best factory performance. In this ... analysis the status of fishing in Subareas 48.1 and 48.2 was not clear. A linear correlation was observed ... Paper Title: Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a ... Japanese krill fishery for the 1980/81 to 2003/04 fishing seasons were analysed. For a number of ... CPUE indices. The inter annual trends in actual mean values showed different patterns from those of ... critical level of krill availability which is just enough to maintain the best factory performance. In ... this analysis the status of fi shing in Subareas 48.1 and 48.2 was not clear. A linear correlation was ... studies pointed out the importance of including a measure of searching time in the abundance index in ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Auteur(s): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu
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Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island
the surface throughout the day. With regard to body size and maturity of krill in the inshore foraging ... dominant with occasional occurrences of juveniles (modal length 21 mm). In contrast, in the offshore ... Paper Title: Differences in distribution and population structure of krill (Euphausia superba ... in inshore regions where krill frequently occurred but higher density areas of krill (~250 g/m 2 ... close to the surface throughout the day. With regard to body size and maturity of krill in the inshore ... dominant with occasional occurrences of juveniles (modal length 21 mm). In contrast, in the offshore ... in the foraging areas of penguins and fur seals. The reasons why fur seals chose offshore foraging ... active sites in the Antarctic Peninsula Integrated Study Region of CEMP (CCAMLR Ecosystem Monitoring ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 273–285 : Auteur(s): Ichii, T., H. Ishii, J.L. Bengtson, P. Boveng, J.K. Jansen and M. Naganobu
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On dispersion of different pelagic organisms, forming Antarctic backscattering in South Sandwich subarea during January–February 2000
Abstract: In the paper these have been discussed the results of acoustic estimation of ... groups of pelagic organisms. One can reveal, basing on the results of surveying, the influence of water ... ground locations occupied by the Weddell Sea waters and Frontal Zone of Weddell Gyral waters; myctophid ... fishes prevail in northern proving ground within the Antarctic Curcumpolar Current waters; zooplankton is ...
Meeting Document : WG-EMM-01/61 : Auteur(s): S.M. Kasatkina and A.P. Malyshko (Russia)
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Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island
. 2-3 km in horizontal distance) of higher densities (≥250g/m2). In the inshore foraging areas krill ... , in the inshore foraging areas middle-sized krill (modal length 43 mm), which consisted mainly of ... , in the offshore foraging areas large-sized krill (modal length 47 mm), of which the majority were ... areas of krill (≥250g/m2) were rather limited. In contrast, fur sea! foraging areas were formed in ...
Meeting Document : WG-KRILL-92/27 : Auteur(s): T. Ichii, H. Ishii (Japan), J.L. Bengtson, P. Boveng, J.K. Jansen (USA) and M. Naganobu (Japan)
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Diet composition of Dissostichus eleginoides in Subarea 48.3, Dr Eduardo Holmberg survey March/April 1996
Abstract: A diet analysis of the patagonian toothfish Diissostichus eleginoides in the Subarea ... 48.3 in March/April 1996 was carried out by frequency of occurrence (F%) and coefficient "Q" ... ; (%) methods. The samples consisted chiefly of immature specimens, with predominant length ranges of 30-70 cm ... , although its importance was overestimated by the frequency of occurrence method. Cephalopods and mysids ...
Meeting Document : WG-FSA-96/29 : Auteur(s): Barrera-Oro, E., Marschoff, E., Casaux, R.
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Spatial and temporal variability in foraging patterns of krill predators at Signy Island and South Georgia
. In a system where the distribution and abundance of prey is highly variable, foraging behaviour must ... be highly adaptable. In this paper we consider the behaviour of seal and seabird krill-dependent ... described as an example of how they could be used in other locations where the fishery operates. Author(s ... foraging range increases as the breeding season advances, potentially affecting local levels of predation ...
Meeting Document : WG-EMM-02/33 Text : Auteur(s): P.N. Trathan, J.L. Tanton, A.S. Lynnes, M.J. Jessopp, H. Peat, K. Reid and J.P. Croxall (United Kingdom)
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MITIGATION OF SEABIRD CAPTURES DURING HAULING IN CCAMLR LONGLINE FISHERIES
CCAMLR as a problem as early as 1994/95 when steps were taken to reduce the attraction of birds to ... performance of bird exclusion devices (BED) placed around the hauling bay. Observer data collected since 2003 ... Kingdom) Title: MITIGATION OF SEABIRD CAPTURES DURING HAULING IN CCAMLR LONGLINE FISHERIES Approval ... Abstract: In recent years there has been an increased focus on reducing ‘residual’ seabird ...
Meeting Document : WG-IMAF-09/14 : Auteur(s): E. Reid, B. Sullivan (BirdLife International), K. Reid (Secretariat) and J. Clark (United Kingdom)
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Foraging ecology of grey-headed mollymawks at Marion Island in relation to longline fishing activity
operations in the southern Indian Ocean. We studied the foraging ecology of breeding grey-headed mollymawks ... longline fishing. During the early post-guard phase, foraging trips were shorter and to the southwest of ... the island, in the Polar frontal and Antarctic zones. Short foraging trips (Author(s): D.C. Nel, J.L ... : Foraging ecology of grey-headed mollymawks at Marion Island in relation to longline fishing activity ...
Meeting Document : WG-FSA-99/25 : Auteur(s): D.C. Nel, J.L. Nel, P.G. Ryan, N.T.W. Klages (South Africa), R.P. Wilson (Germany) and G. Robertson (Australia)