Resultados de la búsqueda
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Summary of a three year mark-recapture experiment to estimate population size of Antarctic toothfish (Dissostichus mawsoni) in Southern Area of Statistical Subarea 48.4
Abstract: A three-year tagging experiment was initiated by the UK in 2008/09 fishing season with ... mawsoni) in South of Statistical Subarea 48.4. This paper presents the results for D. mawsoni. Fishing ... vessel between 2008/09 and 2009/10, but the spatial coverage of fishing effort was reduced in 2010/11 due ... decline in catch rates over the three year study, more so between 2010 and 2011. A total of 476 D. mawsoni ...
Meeting Document : WG-FSA-11/31 Rev. 2 : Autor(es): R.C. Wakeford, J. Roberts and R.E. Mitchell (United Kingdom)
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JAPANESE SCIENTIFIC OBSERVER ACTIVITIES FOR KRILL FISHERY IN CCAMLR CONVENTION AREA FROM 2003/04 TO 2007/08 FISHING SEASONS
concentrated to the Subarea 48.3. The observer coverage was 32.2 – 51.4 %, and exceeded 50 % in 2007/08 season ... bycatch species in order to ensure their skill in data and sample collection. Resultant data and samples ... the krill samples revealed the occurrence of black-spot disease in Antarctic krill and its relation to ... FISHERY IN CCAMLR CONVENTION AREA FROM 2003/04 TO 2007/08 FISHING SEASONS Approval: Approved ...
Meeting Document : WG-EMM-09/19 : Autor(es): M. Kiyota and T. Iida (Japan)
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DISTRIBUTION AND ABUNDANCE OF ANTARCTIC TOOTHFISH IN THE ROSS SEA
to the 2007/08 fishing year. It focuses in particular on Antarctic toothfish catches taken from the ... fishing grounds of deep water (mainly > 800 m) off Terra Nova Bay, Ross Island, and in the south of ... . In preparing this paper we have identified some data sources which could potentially be used to ... in different years making interpretation difficult. Tag-recapture data from the Terra Nova Bay ...
Meeting Document : WG-EMM-09/40 : Autor(es): S.M. Hanchet, S. Mormede and A. Dunn (New Zealand)
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A PROPOSED MANAGEMENT PROCEDURE FOR THE TOOTHFISH (Dissostichus eleginoides) RESOURCE IN THE PRINCE EDWARD ISLANDS VICINITY
Pessimistic” and a “Pessimistic” current status for the toothfish resource in the Prince Edward Islands region ... recommendations for this resource. The MP uses two data sources: the recent trend in longline CPUE and the mean ... reasonably robust across a range of sensitivity tests, though does deteriorate in conservation terms if ... necessary to guard against a change in selectivity towards greater catches of older fish. Author(s): A ...
Meeting Document : WG-SAM-08/11 : Autor(es): A. Brandão and D.S. Butterworth (South Africa)
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The effects of an experimental hake Merluccius capensis/paradoxus longline fishery on Procellariiform seabirds in South Africa - a preliminary investigation
Abstract: Due to the detrimental effect longline fisheries have had on seabirds in other parts of ... Procellariiform seabirds in South Africa. Carcases of Procellariiform seabirds caught on Hake longlines during ... responsible for 1928 ± 1345 whitechinned petrel deaths a year in South African waters. Stepwise multiple ... regression suggested that light intensity was the critical factor explaining variation in the number of ...
Meeting Document : WG-FSA-95/21 : Autor(es): Barnes, K.
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Orientation of Antarctic krill in an aquarium
strength (TS) values, since TS varies with body orientation. Krill body orientation was measured in an ... . Although mature females with marked swelling of the cephalothorax were not included in the experiment, the ... center of mass was found to be situated more to the anterior than in males and immature females. The ... anterior and the pleopods are less developed in females. It is concluded that the orientation, and ...
Meeting Document : WG-KRILL-93/24 : Autor(es): Y. Endo (Japan)
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An assessment of Chaenocephalus aceratus and Pseudochaenichthys georgianus in Subarea 48.3
Abstract: Chaenocephalus aceratus and Pseudochaenichthys georgianus have been exploited in ... for these two species by assuming that 75% of the ‘unidentified fish’ caught by the Soviet Union in ... and length data from Polish research and commercial sources has been used with the new catch data in a ... ) (bycatch) limit of 300 tonnes would seem to be appropriate to allow recovery of both species in the near ...
Meeting Document : WG-FSA-90/06 : Autor(es): D.J. Agnew (Secretariat) and K.-H. Kock (Germany)
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Assessment models for Patagonian toothfish in research block 5843a_1 of Division 58.4.3a, Elan Bank
status assessments of Dissostichus eleginoides in research block 5843a_1 in Division 58.4.3a for the ... generally based on those with the same names in WG-SAM-14/17 as follows: 1) R.0.1 model without tagging ... comprised of two fisheries split by depths of 1 200 m as the model in WG-SAM-14/17. Number of longlines was ... biomass (B 0) estimate. The MPD estimate of B 0 was 464 and 772 tonnes in R.0.1 and R.1 models ...
Meeting Document : WG-FSA-14/22 : Autor(es): K. Taki (Japan)
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The 2014 annual random stratified trawl survey in the waters of Heard Island (Division 58.5.2) to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari
, which had not been sampled since 2005. The catches of C. gunnari were less than half of those in 2013 ... catches in 2014 were slightly higher than the average RSTS take. Catches at Shell Bank consisted mostly of ... L. squamifrons and a small quantity of C. rhinoceratus. There were no C. gunnari caught in this ... stratum. The catch of invertebrates in the 2014 survey was 3.4 t, with the most abundant taxa being the ...
Meeting Document : WG-FSA-14/41 : Autor(es): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)
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Seasonal variation in the diet of Arctocephalus gazella at 25 de Mayo/King George Island, South Shetland Islands, Antarctica
. gazella during the winter period in the South Shetlands area. A total of 224 scats were collected in the ... antarcticum constituted the dominant fish prey species; in winter only P. antarcticum was dominant, while ... myctophids were absent. The only squid species present in the diet was Slozarsykowia circumantarctica. It is ... ) Title: Seasonal variation in the diet of Arctocephalus gazella at 25 de Mayo/King George Island, South ...
Meeting Document : WG-EMM-15/37 : Autor(es): A. Harrington, G.A. Daneri, A.R. Carlini, D.S. Reygert and A. Corbalán (Argentina)