Resultados de la búsqueda
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Can trace element signatures in the otoliths of Dissostichus eleginoides record capture size?
Abstract: The elemental structure of growth increments in the otoliths of fish reflects the ... composition of water passing across the gills: as a result, elemental signatures can potentially be used to ... reconstruct the environmental history experienced by fish. To test whether the otolith elemental signatures of ... from the outer edges (which are laid down during the interval leading to capture) of otoliths taken ...
Meeting Document : WG-FSA-03/88 : Autor(es): J.R. Ashford and C.M. Jones (USA)
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Estimates of bird by-catch by IUU vessels in Subarea 48.3, 1998–2001
Abstract: Estimates of bird catches by IUU fishing made using the new method presented by Agnew ... and Kirkwood last year (WG-FSA-02/4 & 5) are updated to take account of the comments of the ... working group. Last year we suggested that the Isabel data from 1997 were rather atypical of bird catch ... by other vessels in 1997. Including the Isabel data and weighting the bootstrap estimates of bird ...
Meeting Document : WG-FSA-03/56 : Autor(es): D.J. Agnew (United Kingdom)
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An Apparent Decrease in the Prevalence of “Ross Sea Killer Whales” in the Southern Ross Sea
occurrence patterns and diet of RS killer whales, and present new information on numbers observed in the ... large Antarctic toothfish (Dissostichus mawsoni), as the review herein demonstrates. On the basis of sea ... -effort of scientific fishing for toothfish in McMurdo Sound, we suggest and review evidence that the ... -driven, density-dependent northward contraction of the toothfish stock, and not to changes in the ...
Meeting Document : WG-EMM-09/P01 : Autor(es): D.G. Ainley, G. Ballard and S. Olmastroni
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Catch and effort data for the longline fishery in Subarea 48.3 – comparison of data reported to CCAMLR and data acquired by the UK between 1994 and 1996
database (database C2). Some instances of incomplete reporting were identified, where blocks of data appear ... to be missing from the CCAMLR database. One instance was identified of multiple hauls being submitted ... as single records. A number of hauls yielding zero catches present in the data acquired by the UK ... have not been reported to CCAMLR. In 1996 less than 10% of the hauls showed large discrepancies between ...
Meeting Document : WG-FSA-97/37 : Autor(es): Parkes, G.B., Pearce, J., Agnew, D.J.
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Winter gut contents of the Antarctic krill (Euphausia superba Dana) collected in the South Georgia area
Abstract: Foregut contents of the Antarctic krill Euphausia superba Dana which were collected in ... the South Georgia area in austral winter, 12 July ~ 4 August 1992 were observed. A total of 130 ... were examined in this study. The foregut contents of the krill consisted of various fragments of ... crustacean zooplankton in 77 individuals out of 130 examined. Among the fragments a portion of the pereiopods ...
Meeting Document : WG-KRILL-93/30 : Autor(es): Y. Nishino and A. Kawamura (Japan)
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Stomach contents of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea region in 2010 and a comparison with 2003
Abstract: The stomach contents of 273 Dissostichus mawsoni captured by bottom longline in the ... in 640–2127 m depths and ranged between 78 and 181 cm TL. A total of 198 stomachs contained prey ... items, of which 13 contained only digested prey, leaving 185 stomachs for analysis. The majority of ... whitsoni) dominated the diet occurring in 37% of stomachs and accounting for 45% by weight and 52% by IRI ...
Meeting Document : WG-FSA-10/22 : Autor(es): D.W. Stevens, J. Forman and S. Hanchet (New Zealand)
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Decadal trends in abundance, size and condition of Antarctic toothfish in McMurdo Sound, Antarctica, 1972–2011
Abstract: We report the analyses of a dataset spanning 39 years of near-annual fishing for ... unit effort (CPUE) were derived from the > 5500 fish caught, the large majority of which were ... measured, tagged and released. Contrary to expectation, the length frequency of the McMurdo Sound catch was ... dominated by fish in the upper two-thirds of the overall distribution exhibited in the industrial catch for ...
Meeting Document : WG-FSA-12/P04 : Autor(es): D.G Ainley, N. Nur, J.T Eastman, G. Ballard, C.L Parkinson, C.W Evans and A.L. DeVries
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A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on recent survey results
vicinity of Heard Island during April-May 2011. This paper provides a preliminary assessment of mackerel ... icefish population structure, abundance and yield for the area of Division 58.5.2 to the west of 79 o 20 ... ’ E using standard CCAMLR methods. A pattern of 5 year classes being present simultaneously in the ... population, which was first detected in 2011, has persisted, however a large cohort of fish, estimated to be ...
Meeting Document : WG-FSA-12/26 : Autor(es): D.C. Welsford (Australia)
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Revised diet composition and feeding strategy of Antarctic toothfish, Dissostichus mawsoni in SSRU 58.4.1.C-a for the 2012/2013 Korean exploratory longline fishery
Abstract: Stocks of Dissostichus mawsoni in Division 58.4.1 were vulnerable with a big range of ... managements. Therefore, the Korean scientists analyze diet composition and feeding strategy of Antarctic ... toothfish, Dissostichus mawsoni in SSRU 58.4.1.C-a as a part of Korean research plan for the exploratory ... longline fishery for Dissostichus spp. in SSRUs of 58.4.1 C and E during 2012/2013 season. This study was ...
Meeting Document : WG-FSA-13/43 : Autor(es): I. Yeon, Y.J. Kwon, S.G. Choi, K.J. Seok, D.W. Lee, J.M. Jeong, S.J. Ye, H.J. Kim and G.W. Baeck (Republic of Korea)
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Progress in the evaluation of management strategies for the Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
account of uncertainties in the assessment of stocks and as a method to ensure robust management ... approaches. The Scientific Committee of CCAMLR has recommended MSE be used to determine the extent to which ... the management objectives for toothfish fisheries are being met. While the choice of management ... implemented. To date there have been a number of analyses and simulation studies reported for the assessment ...
Meeting Document : WG-SAM-15/48 : Autor(es): S. Mormede, A. Dunn, S.J. Parker and S.M. Hanchet (New Zealand)