Resultados de la búsqueda
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Herpes virus antibodies in Arctocephalus gazella from Cape Shirreff, Livingston Island, Antarctica
utility of the extra vascular fluid for serological research in this matter is suggested. It is also ... recognized the microneutralization test as sensitive method for this search. This finding also contribute ... research on diseases in Antarctic wildlife, considering it interesting to be discussed in the WG-EMM agenda ... , as an important factor which may affect the population success. This also may provide information to ...
Meeting Document : WG-EMM-01/59 : Autor(es): O. Blank, J.M. Montt, M. Celedón and D. Torres (Chile)
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Evaluation of VME taxa classification by scientific observers from New Zealand vessels in the Ross Sea Antarctic toothfish longline fishery during the 2009/10 season
areas south of 60°S) to collect and monitor longline bycatch for VME taxa, and implement a move-on rule ... if required. To ensure effective monitoring, an evaluation of VME taxa classification by Scientific ... taxa classification guide, and retained 1109 samples from 1272 longline segments for subsequent ... for most groups, the observer classifications were reasonably precise (88% accuracy). Some problems in ...
Meeting Document : TASO-10/10 : Autor(es): D.M. Tracey, M.E. Carter and S.J. Parker (New Zealand)
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Models of larvae dispersion of Antarctic toothfish (Dissostichus mawsoni)
stock structure in the Ross Sea have parallels for populations in other regions of the Antarctic, and ... hypotheses about how stock structure is maintained may apply to each population. We provide an update of the ... circumpolar models of larval dispersion for D. mawsoni developed by Hanchet et al. (2008) using the HiGEM ... locations for modelling the potential egg and larval dispersal around Antarctica using the HadGEM (Rickard ...
Meeting Document : WG-FSA-12/48 : Autor(es): A. Dunn, G.J. Rickard, S.M. Hanchet and S.J. Parker (New Zealand)
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Quantifying the escape mortality of trawl caught Antarctic krill (Euphausia superba)
Abstract: Antarctic krill (Euphausia superba) is an abundant fishery resource, the harvest levels ... fishing gear. The methods for determining fishing mortality in krill are still poorly developed. We used a ... composition all had no significant effect on mortality of krill escaping 16 mm mesh size nets, nor was any ... , though not significant, for smaller individuals to suffer higher mortality than larger individuals. The ...
Meeting Document : WG-EMM-16/04 : Autor(es): B.A. Krafft, L.A. Krag, A. Engås, S. Nordrum, I. Bruheim and B. Herrmann
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2007 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
become available for the years 2006 and 2007. The assessment allows for a second fleet to accommodate ... data from a pot fishery that operated in 2004 and 2005. Biological parameter values adopted for Subarea ...
Meeting Document : WG-FSA-07/34 Rev. 1 : Autor(es): A. Brandão and D.S. Butterworth (South Africa)
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Hydroacoustic observations of the vertical distribution of icefish Champsocephalus gunnari in the western part of the slope of the South Georgia Island in December 1999–January 2000
echograms obtained with the use of an echograph of the "Priboi-101" echo sounder during the ... directed fishery for icefish in the subarea 48.3 in December 1999 – January 2000. The commercial ... be concluded that assessments of Champsocephalus gunnari stock based on the results of bottom trawl ...
Meeting Document : WG-FSA-00/19 : Autor(es): V.L. Senioukov (Russia)
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Oceanological factors affecting formation of mackerel icefish aggregations in the South Georgia area during different seasons of the year
directly on the abiotic conditions, primarily with temperature. The same is true for the wintering period ... and pre-spawning periods. Pre-spawning fish do not depend on the forage species distribution and ... amount of accumulated fat affects an individual fish readiness to spawning. Icefish spawning in the ... affect indirectly icefish aggregations formation through the food items, distribution of which depends on ...
Meeting Document : WG-FSA-05/76 : Autor(es): Zh.A. Frolkina (Russia)
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A history of the exploitation of the Ross Sea, Antarctica
be the least affected stretch of ocean on Earth, although historical effects were not included in the ... that. An intense extraction of Weddell seals Leptonychotes weddellii by the heroic expeditions and then ... industrial fishing occurred in the Ross Sea until the 1996-97 austral summer, when a fishery for Antarctic ... with effects on the ecosystem recently becoming evident. There is probably no other ocean area where ...
Meeting Document : WG-EMM-09/P03 : Autor(es): D.G. Ainley
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Do krill fisheries compete with macaroni penguins? Spatial overlap in prey consumption and krill catches during winter
Abstract: Aim To infer the potential for competition between an important Antarctic predator ... catches. Location South Georgia, Scotia Sea and adjacent waters. Methods The study focused on the winter ... was restricted to three small areas on shelf edges, such that their spatial overlap was negligible ... fisheries should the latter expand in the future, and provides a framework for assessing predator-fishery ...
Meeting Document : WG-EMM-14/02 : Autor(es): N. Ratcliffe, S.L. Hill, I.J. Staniland, R. Brown, S. Adlard, C. Horswill and P.N. Trathan (United Kingdom)
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ENTANGLEMENT OF ANTARCTIC FUR SEALS ARCTOCEPHALUS GAZELLA IN MAN-MADE DEBRIS AT BIRD ISLAND, SOUTH GEORGIA DURING THE 2007 WINTER AND 2007/08 BREEDING SEASON
Bird Island, South Georgia for the 18th consecutive winter (April to October 2007) and 20th consecutive ... March 2008 a total of 36 entangled seals were observed. Sixteen and 20 entanglements were observed in ... for 25% of winter and 10% of summer entanglements. During winter, synthetic string/longline material ... %) involved juveniles (including pups and sub-adults), comprising 88% in winter and 65% in summer. Data for ...
Meeting Document : WG-FSA-08/27 : Autor(es): E.W.J. Edwards (UK)