Search results
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Revised research plan for toothfish in Division 58.4.4b by Shinsei maru No. 3 in 2015/16
Abstract: In this document, we revise stock status assessments of D. eleginoide s in research ... results of reanalysis using CASAL models in research block 58.4.4b_1 are described in a separated document ... . The estimated stock size in block 58.4.4b_1 was 510, 336 and 333 tonnes in CPUE analogy method ... , Petersen method and CASAL OB_1b model (vulnerable biomass in 2014), respectively. The stock sizes of D ...
Meeting Document : WG-FSA-15/20 : Author(s): Delegation of Japan
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Variability in krill length distribution in 48.1 derived from data collected by scientific observers
Abstract: Information on the length distribution of krill in the catch, and the spatial and ... temporal patterns of krill length in the population is essential to assess krill population status and ... generalised additive mixed models (GAMM) to evaluate the spatial and temporal patterns of length in Antarctic ... krill (Euphausia superba) in CCAMLR Subarea 48.1 derived from data collected by scientific observers ...
Meeting Document : WG-EMM-15/16 : Author(s): P. Ziegler, S. Kawaguchi D. Welsford and A. Constable (Australia)
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Effects of variability in prey abundance on reproduction and foraging in chinstrap penguins (Pygoscelis antarctica)
optimally balance investment in current and future offspring. However, when trying to optimize investment in ... contend with large interannual fluctuations in prey availability and hence the cost of chick provisioning ... somewhere along the continuum between maintaining constant investment in foraging effort between years and ... letting chick provisioning fluctuate or holding chick provisioning constant and varying investment in ...
Meeting Document : WG-EMM-06/P6 : Author(s): D.A. Croll, D.A. Demer, R.P. Hewitt, J.K. Jansen, M.E. Goebel and B.R. Tershy (USA)
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Research plan for toothfish in Division 58.4.4a & b by Shinsei Maru No. 3 in 2013/14
Abstract: We made stock status assessments of Dissostichus eleginoides in SSRUs C and D in ... zero to all observed IUU fishing, and using constant YCS (year class strength) in SSRU C. The ... quarter of observed IUU fishing in the division had occurred in SSRU C. High estimated stock levels were ... modified Lincoln-Petersen (446 tonnes). The catch and tagging data in SSRU D were not enough to be applied ...
Meeting Document : WG-SAM-13/21 : Author(s): Delegation of Japan
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The results of investigations of the feeding of Antarctic toothfish D. mawsoni in the Ross Sea in 2005/06
December to March during the two fishery seasons (2004-2005 and 2005-2006) in different fishing areas of ... the Ross Sea located between 67°S to 76°S. 192 longline settings were made. In total, over two seasons ... 3000 stomachs (1913 stomachs in 2005 and 1087 ones in 2006) were analyzed. In 2005 fish was caught at ... to 123 kg. In 2006 Antarctic toothfish was caught at depths of 478-1702 m and its TL ranged from 49 ...
Meeting Document : WG-FSA-06/17 : Author(s): A.F. Petrov (Russia)
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Temporal variability in Adélie penguin CEMP parameters and their response to changes in prey availability
population parameters which are thought to be sensitive to changes in prey availability: breeding success ... the duration of early and late stage foraging trips. For example, low breeding success was recorded in ... period and heavy fledglings. These results may indicate changes in the relative level of resource ... guard stage and elevated during the crèche stage). The overall temporal variability across years in ...
Meeting Document : WG-EMM-12/22 : Author(s): L. Emmerson and C. Southwell (Australia)
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Temporal variability in Adélie penguin CEMP parameters and their response to changes in prey availability
population parameters which are thought to be sensitive to changes in prey availability: breeding success ... the duration of early and late stage foraging trips. For example, low breeding success was recorded in ... period and heavy fledglings. These results may indicate changes in the relative level of resource ... guard stage and elevated during the crèche stage). The overall temporal variability across years in ...
Meeting Document : WG-EMM-12/48 : Author(s): L. Emmerson and C. Southwell (Australia)
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By-catch in the Australian fisheries in Division 58.5.2
Abstract: This paper presents bycatch information for the Australian fisheries in Divisions ... 58.5.2 for the 2003/2004 and 2004/2005 seasons. Bycatch in the trawl fisheries was low, generally less ... than 1% of the total catch (target plus bycatch). Higher percentage bycatch rates occurred in trawling ... grounds where the fishing effort and therefore target catch was low. Bycatch in the longline fisheries was ...
Meeting Document : WG-FSA-05/68 : Author(s): E.M. van Wijk (Australia)
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Revised research plan for toothfish in Division 58.4.4 a & b by Shinsei maru No. 3 in 2013/14
Abstract: We revised stock status assessments of D. eleginoides in SSRUs C and D using ... . Detailed results using CASAL models in SSRU C are described in a separated document. The catch and tagging ... data in SSRU D were not enough to be applied to modified Lincoln-Petersen and CASAL models. Thus the ... stock sizes of D. eleginoides in SSRU D is estimated only by using CPUE comparison with the stock size ...
Meeting Document : WG-FSA-13/36 : Author(s): Delegation of Japan
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Abundance and trends in the breeding population of Adélie penguins (Pygoscelis adeliae) in the western Ross Sea
in the number of Adélie penguin breeding pairs at colonies in the western Ross Sea. High angle ... 2012, and counted. On average 870,465 pairs of Adélie penguins breed in the western Ross Sea each ... , 2001-2010. In contrast, a single declining trend line best represented the number of breeding pairs at ... indicative of direct density dependence in the number of pairs returning to the colony each year. In recent ...
Meeting Document : WG-EMM-13/30 : Author(s): P. O’B. Lyver, M. Barron, K.J. Barton, S. Gordon (New Zealand), D. Ainley, A. Pollard (USA), P.R. Wilson and M.H. Pinkerton (New Zealand)