Résultats de la recherche
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The krill maturity cycle: a conceptual description of the seasonal cycle in Antarctic krill
Abstract: A long term study on the maturity cycle of Antarctic krill was conducted in a research ... temperature and food conditions, and the succession of female maturity stages and intermoult periods were ... observed. In all cases regression and re-maturation of external sexual characteristics were observed, but ... there were differences in length of the cycle and intermoult periods between the experimental conditions ...
Meeting Document : WG-EMM-06/23 : Auteur(s): S. Kawaguchi, T. Yoshida, L. Finley, P. Cramp and S. Nicol (Australia)
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Preliminary assessment of mackerel icefish (Champsocephalus gunnari) for the Heard Island Plateau region (Division 58.5.2) based on a survey in June 2005
-term annual yield in the 2005/2006 CCAMLR season. This paper provides a preliminary assessment of yield ... Abstract: A survey of Mackerel Icefish, Champsocephalus gunnari,was undertaken in Division 58.5.2 ... in the vicinity of Heard Island in June 2005 to provide the information for an assessment of short ... using the assessment methods of CCAMLR. It is proposed that a one-year projection be used in the ...
Meeting Document : WG-FSA-05/39 : Auteur(s): A.J. Constable, T. Lamb and R. Williams (Australia)
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Review of research into seabird–fishery interactions
(post 1990), and in relation to direct effects of fishing through fisheries mortalities was considered ... . The research was divided into five main groupings: a) estimation of bycatch; b) population estimation ... allow an assessment of the utility, current methodologies, and constraints of research into seabird ... biology and fishery interactions. Following from the findings of the review, recommendations were ...
Meeting Document : WG-FSA-05/42 : Auteur(s): R. Alderman (New Zealand)
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On experimental approach to extend boundaries of exploratory fishery on Antarctic toothfish (D. mawsoni) in the Ross Sea (Subareas 88.1 and 88.2) in the meso- and bathypelagial layers
Abstract: Based on the analysis of data on the searching fishery on Antarctic toothfish (D ... . mawsoni) by the Russian fishing vessels "Yantar" and "Volna" in the seasons of 2002/03 ... -2003/04 it has been obtained that the long-line catchability and size composition of fish depended on ... the areas and depth of Antarctic toothfish concentration the need for extension of searching fishery ...
Meeting Document : SC-CAMLR-XXIII/BG/19 : Auteur(s): Delegation of Russia
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A simulation approach to the evaluation of recruitment surveys for D. eleginoides for the Heard Island Plateau region (Division 58.5.2)
Abstract: Assessments of long-term sustainable yield using the Generalised Yield Model (GYM) and ... the setting of total allowable catches (TAC) for Patagonian Toothfish, Dissostichus eleginoides, for ... . Evaluation of both the current RSTS design for Division 58.5.2 and some options for future modifications of ... . Census of fish stocks by age class were compared to population estimates based on simulated RSTS hauls ...
Meeting Document : WG-FSA-04/74 : Auteur(s): S.G. Candy, C.R. Davies and A.J. Constable (Australia)
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Fish in the diet of breeding Antarctic shags Phalacrocorax bransfieldensis at four colonies in the Danco Coast, Antarctic Peninsula
Abstract: The diet of breeding Antarctic shags Phalacrocorax bransfieldensis was investigated at ... four colonies at the Danco Coast, Antarctic Peninsula, by the analysis of 616 pellets (regurgitated ... , Notothenia coriiceps was the main prey in all of the sampling sites, followed in similar importance by G ... Point. Between colonies there were marked differences in the size of the fish consumed. The largest ...
Meeting Document : WG-EMM-00/9 : Auteur(s): R. Casaux, A. Baroni and E. Barrera-Oro (Argentina)
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Effects of orientation on acoustic scattering from Antarctic krill at 120 kHz
Abstract: Backscattering measurements of 14 live individual Antarctic krill (Euphausia superb a ... ) were made at a frequency of 120 kHz in a chilled insulated tank at the Long Marine Laboratory in Santa ... Cruz, CA. Individual animals were suspended in front of the transducers, were only loosely constrained ... of the krill based on the video images and was applied to five of them, giving their target strengths ...
Meeting Document : WG-EMM-99/42 : Auteur(s): D.E. McGehee (USA), R.L. O’Driscoll (New Zealand) and L.V. Martin Traykovski (USA)
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Sexual dimorphism and sexual segregation in foraging strategies of northern giant petrels Macronectes halli during incubation
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 ... dimorphism, in terms of the intersexual food competition hypothesis, on foraging and fasting strategies of ... , 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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Focal areas for marine biodiversity protection in KwaZulu-Natal, South Africa. Marine Systematic Conservation Plan Analyses (SeaPLAN): Summary of Results 2011
requires a multi-scalar understanding of marine ecosystems and human activities. To address this challenge ... KwaZulu-Natal Province of South Africa. Data on 400 marine items including habitats, species, processes ... spatially nested system of planning units, ranking in resolution from 0.2 km to 10 km, was designed to ... available. This approach reflects the multi-scalar nature of marine ecosystem patterns and processes. It ...
Meeting Document : WS-MPA-11/12 : Auteur(s): T. Livingstone, J. Harris, M. Lombard and E. Lagabrielle (South Africa)
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Trends in entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at South Georgia
. Consequently, the authority responsible for the management of Southern Ocean marine resources (CCAMLR) actively ... campaigned for compliance with the MARPOL provisions relating to waste disposal at sea, and for cutting of ... of recording entangled fur seals confirms that entanglement is a persistent problem, although its ... doubled in the same period, so that the overall total of animals entangled may even have increased ...
Meeting Document : SC-CAMLR-XV/BG/03 : Auteur(s): Delegation of the United Kingdom