Resultados de la búsqueda
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Diet of two icefish species from the South Shetland Islands and Elephant Island, Champsocephalus gunnari and Chaenocephalus aceratus 2001–2003
2001 to 2003. C. gunnari fed almost exclusively on krill (Euphausia superba) in all years. The ... importance of other taxa (Themisto gaudichaudii, mysids, myctophids) in the diet was negligible. The average ... . They were Gobionotothen gibberifrons in 2001, Lepidonotothen larseni and C. gunnari in 2002 and L ... . larseni in 2003. An ontogenetic shift in feeding preference of C. aceratus was observed: Fish smaller than ...
Meeting Document : WG-FSA-03/61 : Autor(es): H. Flores, K.-H. Kock, S. Wilhelms (Germany) and C.D. Jones (USA)
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By-catch of fish during a 1995/96 deep-sea longline experimental fishing cruise off the Kerguelen Islands (Division 58.5.1)
Abstract: An experimental longline fishing cruise targetting D. eleginoides has been realised in ... total catch in number. The grenadier Macrourus carinatus and two species of skates Bathyraja eatonii and ... Bathyraja irrasa are the dominant species in the by-catch. The morid Antimora rostrata is also a common by ... and bathymetrical differences in the by-catch species distribution is noted. The mean abundances ...
Meeting Document : WG-FSA-96/36 : Autor(es): Pruvost, P., Duhamel, G.
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The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species
Abstract: Managing fisheries to achieve ecosystem objectives is in its infancy. A general ... approach for maintaining ecological relationships and providing for the recovery of depleted populations in ... taking the ecosystem approach in managing fisheries: (i) how might fisheries impact incidentally on an ... account of uncertainties in knowledge of the structure of ecosystems. Estimates of production arising ...
Meeting Document : WG-EMM-12/P04 : Autor(es): A.J. Constable
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Summary of holdings of Patagonian toothfish (Dissostichus eleginoides) otoliths and size-at-age estimates from Heard and McDonald Islands (Division 58.5.2)
Abstract: Scientific observers aboard vessels in the Australian fisheries in 58.5.2 have ... collected Dissostichus eleginoides otoliths since the fishery commenced in the 1996/97 season. This program ... has yielded data which has assisted with understanding age structure and growth rates of toothfish in ... 21000 otoliths have been collected from toothfish in 58.5.2, and more than 2500 otolith pairs have been ...
Meeting Document : WG-FSA-07/45 : Autor(es): D.C. Welsford and G.B. Nowara (Australia)
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Report on attendance at the Third Meeting of the Committee for Environmental Protection Under the Madrid Protocol
Abstract: This report outlines the participation of the SC-CAMLR Chair in the Third Meeting of ... debris, especially in relation to compliance with Protocol Annex IV; (b) SC-CAMLR should consider the ... designation of Specially Protected Species in respect of its own needs and in relation to available IUCN ... criteria; (c) CCAMLR's consideration of l\-larine Protected Areas should be carried forward and in ...
Meeting Document : SC-CAMLR-XIX/BG/17 : Autor(es): Chair of the CCAMLR Scientific Committee
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Light levels experienced by foraging Antarctic fur seals, Arctocephalus gazella
(Arctocephalus gazella) at Bird Island, South Georgia (54° 00' S 38° 02' W) in the 1994/5 austral ... to minimum starlight (10-6 lux) at night and during deep daytime dives. The change in il1uminance ... with depth did not follow a simple exponential decrease as recorded in clear oceanic waters. TDRs ... recorded strong light attenuation in the top 50 m of the water column. The mean attenuation coefficient was ...
Meeting Document : WG-EMM-99/28 : Autor(es): D.J. McCafferty, I.L. Boyd and T.R. Walker (UnitedKingdom)
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ADDING CATCH AT AGE AND SURVEY DATA TO THE 48.3 TOOTHFISH CASAL ASSESSMENT
Abstract: The catch-at-age based CASAL model for toothfish in Subarea 48.3, which was presented ... in 2007, is developed and extended here to include survey data. Additional adjustments to the model ... but in the past some cohorts have been missed by the survey. Fits to the survey CPUE are generally not ... retardation period and rate of tag loss. When these factors are included in the model the fits to the tag ...
Meeting Document : WG-SAM-09/13 : Autor(es): D.J. Agnew and M. Belchier (United Kingdom)
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Dietary segregation of krill-eating South Georgia seabirds
period in 1986. For five species, Antarctic krill Euphausia superba was the main food (39-98% by mass ... , was different between all seabird species, reflecting some combination of differences in foraging ... ranges. selectivity by predators, or differences in escape responses of krill. For the krill-eating ... success and information on diet in 5-10 other years suggest that in 1986 seabird diet and reproductive ...
Meeting Document : WG-EMM-97/15 : Autor(es): Prince, P.A., Croxall, J.P., Reid, K.
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Informative approaches to ageing Antarctic fishes
considered in terms of the passage of time (chronological age), and it can also be examined as ' ... ;physiological time'. In this regard otoliths and post-mitotic tissues may contain a large amount of ... biological and ecological information about a fish's age and past life history. In otoliths this ... correlated and that species differences in shape exist. Regression analyses of otolith dimensions may make it ...
Meeting Document : CCAMLR/86/FA/07 : Autor(es): R.L. Radtke and K.T. Hill (USA)
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Streamlining the work of the Scientific Committee for the Conservation of Antarctic Marine Living Resources (SC-CAMLR)
Abstract: In recent years, the Scientific Committee has been dealing with a great diversity of ... at present. In our view, this stems from constraints on the way SC-CAMLR does work. In this paper ... , we describe these constraints and combine thoughts given to the CCAMLR Symposium in May 2015 on how ... these issues may be resolved. In particular, we propose some options for re-organising the work and ...
Meeting Document : WG-EMM-15/59 : Autor(es): G. Watters (USA), A. Constable and D. Welsford (Australia)