Resultados de la búsqueda
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Ecosystem conservation and the race to krill
improvements in the management of Antarctic krill fisheries, including establishing feedback management ... protective measures to prevent excessive concentration of krill fishing in coastal areas close to predator ... colonies in Subarea 48.1. This is of particular relevance since fishing has in recent years been ... concentrated in coastal locations in 48.1. Author(s): Submitted by ASOC Title: Ecosystem conservation and the ...
Meeting Document : CCAMLR-XXXIV/BG/28 Rev. 1 : Autor(es): Submitted by ASOC
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Seabird and longline interactions: effects of a bird-scaring streamer line and line shooter on the incidental capture of northern fulmars Fulmarus glacialis
line and a line shooter was investigated in commercial longlining in the northern Atlantic off the ... mitigation measures, a combination of both and no mitigation measure. A total of 58,420 hooks were set in ... was caught when the bird-scaring line was used in combination with the line shooter. In contrast, 32 ... fulmars were caught in sets with no mitigation device and thirteen in sets with the line shooter alone ...
Meeting Document : WG-FSA-01/78 : Autor(es): S. Løkkeborg (Norway) and G. Robertson (Australia)
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Global relationships amongst black-browed albatrosses: analysis of population structure using mtDNA and microsatellites
five island groups in the Southern Ocean. High levels of sequence divergence were found in both taxa ... (0.55–7.20% in black-browed albatrosses and 2.10–3.90% in grey-headed albatrosses). Black-browed ... , indicating high levels of mixture and hybridization. In contrast, grey-headed albatrosses form one globally ... markers found similar population structure to the mtDNA analyses in both black-browed and grey-headed ...
Meeting Document : WG-FSA-01/19 : Autor(es): T.M. Burg and J.P. Croxall (United Kingdom)
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A preliminary population status model for the Patagonian toothfish, Dissostichus eleginoides, on the Kerguelen Plateau (Divisions 58.5.1 and 58.5.2) using CASAL
Patagonian toothfish (Dissostichus eleginoides) fishery in the Southern Ocean outside of the Atlantic sector ... . Analysis of genetic, demographic and tagging data indicates that toothfish form a metapopulation in this ... , commercial and illegal fishing activities in the French and Australian EEZs. This represents a substantial ... step forward in understanding the dynamics and current status of toothfish across the Kerguelen Plateau ...
Meeting Document : WG-SAM-11/20 : Autor(es): S.G. Candy (Australia), A. Relot, G. Duhamel (France), D.C. Welsford, A.J. Constable, T.D. Lamb (Australia), P. Pruvost and N. Gasco (France)
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DISTRIBUTION AND ABUNDANCE OF SKATES ON THE KERGUELEN PLATEAU (CCAMLR DIVISIONS 58.5.1 AND 58.5.2)
Abstract: Three species of skates are commonly taken as incidental by-catch in the Patagonian ... Plateau, showing different spatial distributions, linked mainly with depth. In the Australian EEZ, B ... in the HIMI region. The smallest species, B. murrayi, occurs only in the shallower waters down to ... from the trawl fisheries at HIMI are low and do not show any evidence of depletion in the main fishing ...
Meeting Document : WG-FSA-09/43 : Autor(es): G.B. Nowara, D.C. Welsford, T. Lamb (Australia), N. Gasco, P. Pruvost and G. Duhamel (France)
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A generalized discriminant for sexing fulmarine petrels from external measurements
birds to predict the sex of unknown individuals in field studies. Geographic variation in size and shape ... , Daption capense; and Snow Petrel, Pagodroma nivea) assigned 81 to 98% of birds in the samples to the ... single discriminant. Adequate performance of this generalized discriminant in samples of different ... species shows its validity for use in other populations of any of these species. The generalized function ...
Meeting Document : WG-CEMP-94/24 : Autor(es): J.A. van Franeker and C.J.F. ter Braak (The Netherlands)
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Krill caught by predators and nets: differences between species and techniques
during February 1986 at South Georgia were compared to krill from scientific nets fished in the area at ... differences from krill taken by other predators and by nets. There were significant differences in the ... maturity/sex stage composition between nets and predators; in particular all predator species showed a ... consistent sex bias towards female krill. Similarities in the krill taken by macaroni (offshore feeding) and ...
Meeting Document : WG-EMM-96/09 : Autor(es): Hill, H.J., Reid, K., Trathan, P.N., Croxall, J.P.
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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
fishing season. D. eleginoides was mainly caught in the shallower bank <1000 m, while D. mawsoni was ... mainly caught in the deeper slope >1500 m. The separation of the two species by depths may be related ... in D. eleginoids, while the size structure was very similar among fishing seasons and showed the ... unimodal distribution in D. mawsoni. D. eleginoides showed resting stage in sexual maturity, while D ...
Meeting Document : WG-FSA-10/47 : Autor(es): 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
fishing season. D. eleginoides was mainly caught in the shallower bank <1000 m, while D. mawsoni was ... mainly caught in the deeper slope >1500 m. The separation of the two species by depths may be related ... in D. eleginoids, while the size structure was very similar among fishing seasons and showed the ... unimodal distribution in D. mawsoni. D. eleginoides showed resting stage in sexual maturity, while D ...
Meeting Document : WG-SAM-10/16 : Autor(es): K. Taki, M. Kiyota, T. Ichii and T. Iwami (Japan)
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Acoustic and catch data collected by the fleet – relevance for feedback management
Abstract: The Norwegian fishing vessels involved in krill fisheries are also used to carry out ... logging also during periods of commercial fishing. In this paper we give an overview of the properties of ... these data and demonstrate potential applications for example to extract information on changes in ... distribution over time in a single season. Vertical distributions inside and outside the fishing area change ...
Meeting Document : WG-EMM-15/13 : Autor(es): O.R. Godø, T. Klevjer and G. Skaret (Norway)