Résultats de la recherche
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Spatial and temporal variability in foraging patterns of krill predators at Signy Island and South Georgia
be highly adaptable. In this paper we consider the behaviour of seal and seabird krill-dependent ... . In a system where the distribution and abundance of prey is highly variable, foraging behaviour must ... predators foraging to provision their young and to feed themselves. We examine data from a variety of ... 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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Age and growth of Scotia Sea icefish Chaenocephalus aceratus (Lönnberg, 1906), from the South Shetland Islands
Abstract: Samples of Chaenocephalus aceratus were collected during a trawl survey carried out ... observed in other recent surveys within the same area, C. aceratus represented one of the predominant ... along their sagittal plane. To estimate the precision of age data, we compared blind readings by readers ... Bertalanffy growth curves were fitted to the estimated age-length data for each sex. The estimated values of ...
Meeting Document : WG-FSA-02/77 : Auteur(s): M. La Mesa, J. Ashford, E. Larson and M. Vacchi
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Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean, Antarctic
mainly caught in the deeper slope >1500 m. The separation of the two species by depths may be related ... to the physical intolerance to the cooler temperature by the lack of antifreeze for the former ... species. The mean total length (TL) of females was significantly larger than that of males for both ... species. The proportion of males to the total adults decreased significantly with the depths with gradual ...
Meeting Document : WG-FSA-10/47 : Auteur(s): K. Taki, M. Kiyota, T. Ichii and T. Iwami (Japan)
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Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean, Antarctic
mainly caught in the deeper slope >1500 m. The separation of the two species by depths may be related ... to the physical intolerance to the cooler temperature by the lack of antifreeze for the former ... species. The mean total length (TL) of females was significantly larger than that of males for both ... species. The proportion of males to the total adults decreased significantly with the depths with gradual ...
Meeting Document : WG-SAM-10/16 : Auteur(s): K. Taki, M. Kiyota, T. Ichii and T. Iwami (Japan)
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A comparison of two different methods to age mackerel icefish (Champsocephalus gunnari) at South Georgia
Abstract: Age determinations estimated by means of otoliths and age classes derived from CMIX ... the two methods were revealed. A number of suggestions including an Age Determination Worksop to be ... held in Kaliningrad in 2005 and the exploration of methods in addition to CMIX are made to reconcile ... some of these differences in the future. Author(s): P. Gasyukov (Russia), K.-H. Kock (Germany) and ...
Meeting Document : WG-FSA-04/70 : Auteur(s): P. Gasyukov (Russia), K.-H. Kock (Germany) and Zh.A. Frolkina (Russia)
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Fatty acid signature analysis from the milk of Antarctic fur seals and southern elephant seals from South Georgia: implications for diet determination
Abstract: Fatty acid signature analysis (FASA) makes use of specific fatty acids, as well as ... misleading. This study examined fatty acid profiles in milk from two species of pinniped from the Southern ... . Southern elephant seal data could be distinguished from Antarctic fur seals by lower levels of the fatty ... acids 16:4 n1, 18:2 n6, 18:4 n3, 18:4 n1 and 20:5 n3 and by higher levels of 18:0, 18:1 n9/ n11 (i.e. 18 ...
Meeting Document : WG-EMM-99/44 : Auteur(s): D.J. Brown, I.L. Boyd, G.C. Cripps and P.J. Butler (United Kingdom)
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UPDATE ON ITEMS OF INTEREST TO WG-IMAF
(Convention Area seabirds) is detailed. This paper contains description of the recent and ongoing seabird ... Economic Zone that are relevant to the work of the IMAF working group. The bycatch of seabirds by fisheries ... mitigation trials that are underway in New Zealand. We also briefly report on the ongoing revision of the ... . Walker (New Zealand) Title: UPDATE ON ITEMS OF INTEREST TO WG-IMAF Approval: Approved ...
Meeting Document : WG-IMAF-09/16 : Auteur(s): N. Walker (New Zealand)
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Diet of cape petrel, Daption capense, during late incubation and chick rearing period, at Laurie Island, South Orkney Islands, Antarctica
Abstract: The diet of Cape petrel was investigated on Mossman Hills, Laurie Island, South Orkney ... , during late incubation and chick-rearing period. The analysis of the samples showed that Euphausiids were ... by far the main prey. Antarctic krill Euphausia superba constituted the bulk of the diet ... conducted during the same period of the life cycle. Author(s): Coria, N.R., Montalti, D., Soave, G.E. Title ...
Meeting Document : WG-EMM-95/85 : Auteur(s): Coria, N.R., Montalti, D., Soave, G.E.
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Acoustic estimates of krill biomass in the Elephant Island area: 1981-1993
Abstract: Acoustic estimates of krill biomass in the vicinity of Elephant Island for the years ... 1981-1993 (with the exception of 1982 and 1986) are presented. Estimates for 1981-1991 are based on ... previous reports adjusted for the recently proposed definition of krill target strength. Biomass estimates ... xl03 t and 52.8 g/m2. Author(s): D.A. Demer and R.P. Hewitt (USA) Title: Acoustic estimates of krill ...
Meeting Document : WG-KRILL-93/49 : Auteur(s): D.A. Demer and R.P. Hewitt (USA)
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Working Plan for the Review of the Admiralty Bay Antarctic Specially Managed Area Management Plan (ASMA No. 1)
, South Shetland Archipelago (herein called the Area). The objective of this paper is to inform CCAMLR ... Abstract: Brazil has been requested to coordinate the implementation of the review of the ... described in ATCM Decision 9 (2005). Author(s): Jaqueline Leal Madruga (Submitted by Brazil on behalf of ... Plan for the Review of the Admiralty Bay Antarctic Specially Managed Area Management Plan (ASMA No. 1 ...
Meeting Document : WG-EMM-12/61 : Auteur(s): Jaqueline Leal Madruga (Submitted by Brazil on behalf of the ASMA No. 1 Management Group – Brazil, Ecuador, Peru, Poland and the United States)