Search results
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Indexing maturation of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
Abstract: The longline fisheries for Antarctic toothfish (Dissostichus mawsoni) in subareas 88.1 ... and 88.2 have provided more than a decade of observations to aid in understanding the life history and ... fish developing to spawn in the upcoming season. Evidence is accumulating that almost all Antarctic ... toothfish in the northern SSRUs have spawned in the previous season and are preparing to spawn in the ...
Meeting Document : WG-FSA-12/40 : Author(s): S. Parker and P. Marriott (New Zealand)
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Length composition, sex ratio, and pre-spawning migration of Dissostichus eleginoides in Subarea 48.3 during 1995
in 1994/95 took place in two major fishing grounds, West of Shag Rocks (Wshag) and North-West of ... South Georgia (NWSG). In March there was a high proportion of large females at Wshag (72%) but a nearly ... Wshag in April reduced the mean length in the catch and increased CPUE (numbers of fish per hook ... ), although sex ratio remained biassed in favour of females. Similar changes in mean length and CPUE were not ...
Meeting Document : WG-FSA-95/27 Rev. 1 : Author(s): Agnew, D.J.
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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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Comparative study of the size composition of catches of D. eleginoides taken during the 25th expedition of the RV Akademic Knipovich in January 1990 (Subarea 48.3)
Abstract: Patagonian toothfish (Dissostichus eleginoides) was found in catches of 25 trawls in ... the offshore area of South Georgia, and in catches of 13 trawls in the Shag Rocks Shelf. It was caught ... Patagonian toothfish consisted of juveniles 21–37 cm in length, immature fishes 41–78 cm in length and mature ... fishes 80–88 cm in length. Nevertheless, there were differences in the length range and the modal lengths ...
Meeting Document : WG-FSA-97/12 : Author(s): VNIRO (Russia)
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SUMMARY OF SCIENTIFIC OBSERVATIONS IN THE CAMLR CONVENTION AREA FOR 2009/10 SEASON
on board longline, trawl and pot vessels in 2009/10. Longline Observations 2. A total of 31 longline ... (international and national) aboard all vessels. At the time of writing this paper, one cruise in subarea 58.5.2 ... was still at sea. Nine cruises were undertaken in Subarea 48.3 by 9 vessels, two cruises were ... undertaken in Subarea 48.4 by 2 vessels, three cruises was undertaken in Subarea 48.6 and Divisions 58.4.1 ...
Meeting Document : WG-FSA-10/05 : Author(s): Secretariat
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Analysis of krill fishery behaviour in the southwest Atlantic: potential signals for moving fishing activities amongst SSMUs
Abstract: This paper outlines the difference in fishing patterns between regions (Subareas) and ... to move between SSMUs frequently in summer, especially in SSMUs in Subarea 48.1 mostly spending less ... . Vessels move around less frequently in Subarea 48.2 during the summer season because of only one viable ... SSMU, but in autumn, there appear to be some opportunistic fishing on the way to Subarea 48.1 to 48.3 ...
Meeting Document : WG-EMM-07/27 : Author(s): S. Kawaguchi, A. Constable and S. Nicol (Australia)
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Trophic interactions and population trends of killer whales (Orcinus orca) in the southern Ross Sea
Abstract: Foraging events and related trends in numbers of Type-B and-C killer whales (Orcinus ... Sea killer whales (Type-C; RSKWs), a fishing-eating ecotype, has continued to decrease in a pattern ... coincident with a decrease in the number and size of an important prey: Antarctic toothfish (Dissostichus ... -eating killer whales and large Chinook salmon (Oncorhynchus tshawytscha) in the northeast Pacific. In ...
Meeting Document : WG-FSA-12/P03 : Author(s): D.G. Ainley and G. Ballard
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A preliminary stock assessment in SSRUS 486A, G: A Bayesian and CPUE based biomass dynamic model
contribution to estimate abundance in a simple biomass dynamic model for both species of toothfish in northern ... sets in which both species are present, and thus, an analysis of catch intention was implemented by ... analysed in terms number of tagged and recovered individuals, and tag size-overlap. Catch reported and ... dynamic model in Bayesian framework using standardised CPUE and catches (considering assumed IUU) was ...
Meeting Document : WG-SAM-13/29 : Author(s): R. Wiff, J.C. Quiroz (Chile) and R. Scott (United Kingdom)
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Results on by-catch of fish during Ukrainian, Polish and Japanese krill fishery in the South Orkney Islands, South Georgia and Shetland Islands areas
krill Euphausia superba Dana conducted by the Ukrainian trawler Grigory Kovtun in the vicinity of South ... South Georgia (March to May, 1993), and by the Japanese fishing vessels No.3 and No.5 Chiyo Maru in the ... (January to February, 1994) to determine the proportion of juvenile fish forms in krill concentrations. In ... juvenile notothenioids at all in the samples collected. In the area around South Georgia, six notothenioid ...
Meeting Document : WG-FSA-96/19 : Author(s): Cielniaszek, Z., Pakhomov, E.A., Iwami, T.
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Feeding habits and prey consumption of Antarctic minke whale Balaenoptera bonaerensis in the Indo–Pacific region of the Southern Ocean
species in the Southern Ocean. Quantitative information on prey consumption of whales is useful to ... understand their feeding ecology and role in the Antarctic marine ecosystem. The purposes of this study were ... in stomach contents, and 2) to estimate the amount of prey consumed by whales, accounting for some ... under Special Permit in the Antarctic: 1989/90-2004/05) and JARPAII (2005/06-2013/14) in the Indo ...
Meeting Document : WG-EMM-17/14 : Author(s): T. Tamura