Search results
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Review of Dissostichus spp. fishery in the adjacent seas of three Antarctic sectors in 2003–2010
of the Antarctic toothfish is commercially viable not only for countries which are close to the ... the Pacific and Indian sectors of the Antarctic. According to lack of data on the Antarctic toothfish ... estimation of toothfish stock and TAC values in all high-latitude Antarctic seas is necessary. From data ... available we suggest that factual stock values of the Antarctic toothfish are considerably underestimated in ...
Meeting Document : WG-FSA-13/14 : Author(s): A.F. Petrov (Russia)
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Continuation in the 2014/15 season of the research plan initiated in 2012/13 for stocks of Dissostichus spp. in Divisions 58.4.1 and 58.4.2
Divisions 58.4.1 and 58.4.2 in order to estimate local biomass of Dissostichus spp. by means of two methods ... preliminary estimates of local biomass using Leslie depletion analyses have been obtained. Some recoveries of ... with the age-growth study by otoliths reading will allow a robust stock assessment by the end of this ... multiyear research survey. Author(s): Delegation of Spain Title: Continuation in the 2014/15 season of the ...
Meeting Document : WG-SAM-14/09 : Author(s): Delegation of Spain
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Biology, population dynamics and preliminary assessment of the long-term yield of Macrourus caml by-caught by the Australian fishery at Heard Island and the McDonald Islands (CCAMLR Division 58.5.2)
Abstract: Grenadiers (Macrourus spp.) are a common by-catch of the Australian fisheries in ... in Division 58.5.2, and likely to one of the most common grenadier by-caught. Sufficient data was ... collected in the survey, and subsequent commercial longline operations, to enable an assessment of the long ... term sustainable yield of M. caml at HIMI using the Generalised Yield Model. On the basis of this ...
Meeting Document : WG-FSA-15/63 : Author(s): J. Dell, D. Maschette, E. Woodcock and D. Welsford (Australia)
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Density and geographical distribution of krill larvae in the Atlantic Sector of the Antarctic region during summer 2011, 2012 and 2014
Abstract: The analysis of euphausiid larvae collected during summer 2011 in the Weddell Scotia ... decrease in the abundance of Euphausia superba larvae and an increase in Thysanoessa macrura in 2011 and ... 2012 and a strong increase in the abundance of E. superba in 2014. Oceanographic conditions didn’t show ... analysis finding that the associations of the different larvae and especies correspond to the available ...
Meeting Document : WG-EMM-17/29 : Author(s): E. Rombolá, C. Franzosi, G. Tossonotto, V. Alder and E. Marschoff
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The winter distribution of Adélie and chinstrap penguins from two breeding colonies in the South Shetland Islands of Antarctica
Abstract: Satellite telemetry was used to determine the winter movements and distributions of ... ). All five chinstrap penguins were tracked for a minimum of three months each, while one bird was ... that 4 of the 5 chinstrap penguins foraged largely on the shelf to the north and northeast of the South ... signal was lost just to the west of the South Sandwich Island group in late July, approximately 1300 km ...
Meeting Document : WG-EMM-02/55 : Author(s): S.G. Trivelpiece and W.Z. Trivelpiece (USA)
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Evidence to support the annual formation of growth zones in otoliths of Antarctic toothfish (Dissostichus mawsoni)
) have been aged assuming that one translucent zone is formed annually in the otoliths of this species ... before recapture. The number of zones between the fluorescent oxytetracycline line and the otolith margin ... indicates that one translucent zone is formed annually in otoliths of post-mature D. mawsoni. Otoliths from ... that the modes represented year classes and that one translucent zone is formed annually in otoliths of ...
Meeting Document : WG-FSA-02/33 : Author(s): P.L. Horn, C.P. Sutton (New Zealand) and A.L. DeVries (USA)
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DEMOGRAPHIC PATTERNS OF ANTARCTIC KRILL (EUPHAUSIA SUPERBA) EXPLAIN THE SPATIAL SEGREGATION OF BALEEN WHALES (MYSTICETI) AROUND THE SOUTH SHETLAND ISLANDS, ANTARCTICA
Peninsula) and test whether whales exhibit interspecific differences in their exploitation of krill ... Ocean. We used a combination of spatial regression techniques, incorporating spatial autocorrelation, to ... model the overlap between three species of baleen whales and their krill prey. Whales exhibited ... the Antarctic Circumpolar Current. The spatial segregation of krill length-maturity stages provides an ...
Meeting Document : WG-EMM-09/33 : Author(s): J.A. Santora, C.S. Reiss, V.J. Loeb and R.R. Veit (USA)
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Stability of trip selections for the assessment of Antarctic toothfish in the Ross Sea
Abstract: A dataset for the 2009 assessment of Antarctic toothfish (Dissostichus mawsoni) in the ... Ross Sea was selected on the basis of data quality metrics for individual trips. Initial informative ... datasets were selected comprising trips with high (above median) rates of recovery of previously released ... dataset. A retrospective analysis of this data selection method was undertaken to evaluate whether trip ...
Meeting Document : WG-FSA-10/26 : Author(s): D.A.J. Middleton (New Zealand)
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Preliminary analysis of toothfish catch, CPUE, size structure and mark-recapture data from SSRUs 486A and 486G, with comments on the sustainability of different harvest levels
in Subarea 48.6 north of 60°S (the combined SSRUs 48.6A and 48.6G). A preliminary assessment for D ... . mawsoni in Subarea 48.6 south of 60°S (the combined SSRUs 48.6B through 48.6E) is given in an Appendix. An ... track of the number of tagged animals in the population and to predict the number of recaptures per year ... . The method includes recaptures for the year of release. The tagging likelihood term is based on the ...
Meeting Document : WG-FSA-12/31 : Author(s): E. Thomson and M. Bergh (South Africa)
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A possible model of metapopulation structure of Dissostichus eleginoides in the southern Indian Ocean
Abstract: Based on data on movements of Patagonian toothfish derived from tagging experiments and ... analysis of toothfish DNA from Heard Island and McDonald Islands (HIMI), Kerguelen, Crozet and Marion ... some or all of the subadult fish at HIMI migrate northwestwards to Kerguelen and Crozet. Larval fish ... spawned to the north-west of HIMI then return to HIMI in the Antarctic Circumpolar Current. If such a ...
Meeting Document : WG-FSA-03/72 : Author(s): R. Williams, A.J. Constable, C. Davies and S. Candy (Australia)