Search results
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Survey estimates of recruitment of toothfish in Subarea 48.3
data used by the Working Group for toothfish assessments in 1999 and later were correct. We found ... , the modal progression of peaks in the length densities corresponding to cohorts assessed by sequential ... consistently determined from the survey data. The expected reduction in cohort density with time at a log-scale ... rate of-0.16 (natural mortality) was evident in only very few cohort plots, even those which were ...
Meeting Document : WG-FSA-SAM-04/16 : Author(s): Collins, M., Wakeford, R.C., Moir-Clark, J., Belchier, M., Agnew, D.J.
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Robust characterisation of the age structure, growth and recruitment of toothfish in the Macquarie Island and Heard Island and McDonald Islands fisheries
, collected during the 2000-2011 fishing seasons in Division 58.5.2 and outside the CCAMLR area at Macquarie ... , as well as allowing more precise estimates of the selectivity of the different fishing gears used in ... the stock assessment in Division 58.5.2 compared to a scenario using only catch at length data. The ... in developing an ageing program. Author(s): D.C. Welsford, S.G. Candy, J.J. Verdouw and J.J ...
Meeting Document : WG-FSA-12/P07 : Author(s): D.C. Welsford, S.G. Candy, J.J. Verdouw and J.J. Hutchins
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A revised assessment of Patagonian toothfish in Subarea 48.4
Abstract: The stocks of toothfish in Subarea 48.4 are currently divided, for assessment purposes ... species are caught throughout Subarea 48.4 although D. eleginoides are predominantly caught in the north ... , whilst D. mawsoni are mainly caught in the south. WG-FSA 2012 concluded that species specific assessments ... . eleginoides in Subarea 48.4. The main changes to the assessment are: the removal of D. mawsoni data and the ...
Meeting Document : WG-SAM-13/24 : Author(s): R. Scott (United Kingdom)
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Report of vulnerable marine ecosystems in South Georgia Islands (CCAMLR Subarea 48.3) through research dredge sampling
Abstract: In this contribution we report the presence of 6 vulnerable marine ecosystems (VME ... inclusion in the CCAMLR VME registry, were detected during a research cruise performed by the National ... here with previous reports in the same area. Thus, owing to high diversity and abundance of indicators ... by fishing activity in the area of the CCAMLR convention. Author(s): E. Gaitán, L. Schejter, D ...
Meeting Document : WG-FSA-13/58 : Author(s): E. Gaitán, L. Schejter, D. Giberto, M. Escolar and C. Bremec (Argentina)
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Preliminary assessment of Patagonian toothfish in Subarea 48.4
Abstract: To date, the stocks of toothfish in Subarea 48.4 have been divided, for assessment ... in the north, whilst D. mawsoni are mainly caught in the south. CCAMLR WG-FSA 2012 concluded that ... revised assessment of D. eleginoides in Subarea 48.4. The main changes to the assessment are: the removal ... Patagonian toothfish in Subarea 48.4 Approval: Approved ...
Meeting Document : WG-FSA-13/31 : Author(s): R. Scott and V. Laptikohvsky (United Kingdom)
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Spatial and temporal patterns of sperm whale (Physeter macrocephalus) depredation on Australian longline vessels in the Patagonian toothfish (Dissostichus eleginoides) fishery at Heard Island and McDonald Islands (CCAMLR Division 58.5.2)
) and orcas (Orcinus orca) has been reported in nearly all of the Patagonian toothfish (Dissostichus ... eleginoides) longline fisheries in the Southern Ocean (Moir Clark and Agnew 2010, Tixier et al 2010, Soeffker ... and Tixier 2015, Söffker et al. 2015). The first reports of odontocete depredation in the Division ... 58.5.2 fishery date from 2011, and incidences have been reported in every season thereafter. The majority ...
Meeting Document : WG-FSA-15/53 : Author(s): D.C. Welsford and R. Arangio (Australia)
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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 : Author(s): M. Kiyota and T. Iida (Japan)
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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 : Author(s): A. Brandão and D.S. Butterworth (South Africa)
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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 : Author(s): 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 : Author(s): A. Harrington, G.A. Daneri, A.R. Carlini, D.S. Reygert and A. Corbalán (Argentina)