Search results
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Diagnostic plots of stock assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region to 2016/17
Abstract: We provide extensive diagnostic plots for the 2017 models R1 and R3 for Antarctic ... toothfish in the Ross Sea as recommended by WG-SAM-15 (2015). The stock assessment rationale and models as ... well as their main diagnostics are described in Mormede (2017). The CASAL files for the assessment ... models were provided to the CCAMLR Secretariat as a zip file. In this paper we present the results for ...
Meeting Document : WG-FSA-17/38 : Author(s): S. Mormede
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A photographic reference set for Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea region
) from the Ross Sea region. The photographs were derived from the four otolith reference set blocks used ... by New Zealand with the “sister” otoliths provided to CCAMLR for use by other Members. Two ... photographs are provided for each otolith; one of the prepared otolith surface alone, and a second with ... symbols marking the location where each annulus was counted. The photographs link to an excel spreadsheet ...
Meeting Document : WG-SAM-18/18 : Author(s): C. Sutton and S. Parker
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Brief report on scientific observation on the fishery vessel Mellas (FAO Statistical Area 41, January to July 2006)
Abstract: Materials on results of scientific observation in fishery cruise on the longliner ... “Mellas”, operating under the Ukrainian flag in FAO statistical area 41 in the southwest Atlantic outside ... exclusive (sea) economic zones of the foreign states at Patagonian toothfish (Dissostichus eleginoides ... ) fisheries are submitted. The data on volume of the biological material collected in the cruise, the data on ...
Meeting Document : WG-FSA-06/13 : Author(s): S. Usachev (Ukraine)
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On the examining of krill flux
) in the choosen polygones, the proves of active long-distance migrations of krill are considered ... . These proves are not undoubted. The most difficult problem, which nevertheless should determine the ... results of calculations, is the valuation of krill retention time. To make it more correct and natural it ... is necessary to take into account the biological characteristics of krill, especially for the regions ...
Meeting Document : WG-EMM-95/19 : Author(s): Makarov, R.
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Estimates of length-frequency in the assessment of mackerel icefish Champsocephalus gunnari in Subarea 48.3
Abstract: This working document provides details of a modification in the method of calculating ... length distributions used in the assessment of Champsocephalus gunnari from the length distributions of ... individual hauls. The effect of these changes in method have little impact on the catches that would have ... been permitted based on the 2011 and 2013 surveys, but has a larger impact on the catch limits derived ...
Meeting Document : WG-FSA-17/51 : Author(s): T. Earl
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On possible influence of continuous krill fishing technology with the use of ‘air-bubbling suspension system’ on ecosystem elements
Abstract: It was shown that potential increase in krill fishery in the immediate future ... , accompanied by introduction of highly intensive fishing and processing technologies call for studying the ... fishery influence on ecosystem components beyond the framework of traditional investigations of predator ... location, fishing effort, etc.), the trawl design and fishing method should be considered as a constituent ...
Meeting Document : WG-EMM-06/27 : Author(s): S.M. Kasatkina and V.A. Sushin (Russia)
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The relative by-catches of taxa associated with vulnerable marine ecosystems by autolines and Spanish longlines
Abstract: We reanalyzed data collected by the longline fishery in Subarea 88.1 to compare the ... bycatches of VME taxa made by vessels using Autolines and Spanish longlines. The fractions of sets with ... positive bycatch, as well as the weights of bycatch when bycatches were observed, were higher for Autolines ... the large number of zero-bycatch sets, we found that both the amounts of positive bycatches and the ...
Meeting Document : WG-FSA-13/41 : Author(s): T. Gerrodette and G.M. Watters (USA)
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Marine mammals and demersal longlines fishery interactions in Crozet and Kerguelen Exclusive Economic Zones: an assessment of the depredation level
vessels, catching Patagonian tooshfish in the Crozet and Kerguelen Exclusive Economic Zones, between 2003 ... and 2005. In Crozet waters, 71% of the 1308 longlines presented marine mammals interactions with ... killer whales and/or sperm whales. On the other hand, fur seals and/or sperm whales were present in 54 ... % of the 6262 longlines monitored in the Kerguelen waters. Interactions occurred over the whole fishing ...
Meeting Document : WG-FSA-06/63 : Author(s): C. Roche, N. Gasco, G. Duhamel and C. Guinet (France)
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Community Structure of copepods in epipelagic layers in the Ross Sea and neighboring waters
Abstract: During the 9th research cruise of the R/V Kaiyo-maru, copepod samples were collected ... from three layers between the surface and 200 m with RMT 8m2 along the three longitudinal lines in the ... identified and 8 unidentified taxa appeared in the study area. Samples were categorized into four major ... groups by cluster analysis based on species abundance and composition. Group 1 located in the north of ...
Meeting Document : WG-EMM-08/36 : Author(s): Y. Watanabe, S. Sawamoto, T. Ishimaru and M. Naganobu (Japan)
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OTOLITH CHEMISTRY REFLECTS FRONTAL SYSTEMS IN THE ANTARCTIC CIRCUMPOLAR CURRENT
Abstract: Pronounced environmental trends across fronts suggest that the otolith chemistry of ... spatial scales. Trace and minor elements laid down immediately prior to capture – along the edges of ... otoliths from Patagonian toothfish Dissostichus eleginoides – discriminated frontal zones in the Antarctic ... Circumpolar Current in the Southwestern Atlantic Ocean. Mean values differentiated sampling areas by up to 2.6 ...
Meeting Document : WG-FSA-08/P04 - Abstract : Author(s): J.R. Ashford, A.I. Arkhipkin and C.M. Jones