Resultados de la búsqueda
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An exploration of the biological data used in the CCAMLR Subarea 48.3 Patagonian toothfish stock assessments
change. The Working Group recommended that key assessment parameters be reviewed and that changes in the ... fishery dynamics that would impact their estimation be explored. The biological productivity parameters in ... subarea 48.3 are analysed here, particularly whether the proportion of females in the catch, maturity at ... length, length-weight relationships and growth rates have changed over time and how the fishery dynamics ...
Meeting Document : WG-SAM-2019/32 : Autor(es): E. MacLeod, K. Bradley, T. Earl, M. Söffker and C. Darby
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PROPOSAL TO VARY THE REQUIREMENT TO TEST SINK RATES FOR INTEGRATED WEIGHT LONGLINE (IWL) GEAR PRIOR TO ENTERING THE CONVENTION AREA
(IWL) before entering the Convention Area is an impost on fishers that is no longer warranted. Testing ... complied with the required sink rate and that there have been no changes since then to the IWL, other ... Abstract: This paper proposes that, for fishers whose vessels comply with certain conditions, the ... requirement in Protocol C1 of Conservation Measure 24-02 to test the sink rate of integrated weight longlines ...
Meeting Document : WG-FSA-08/36 : Autor(es): I. Hay (Australia)
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Investigating the uncertainty of age determinations for Patagonian toothfish (Dissostichus eleginoides) and the implications for stock assessment
these three methods along with assuming no ageing error. The Gamma and revised Candy methods both ... the revised Candy and Gamma methods. The constant c.v. method and assuming no ageing error produced ... Abstract: We revised the method of Candy et al. (2012) to estimate the ageing error matrix ... (misclassification matrix) to address some issues regarding true ages not being the mode at the extremes of the ...
Meeting Document : WG-FSA-14/46 : Autor(es): P. Burch, P. Ziegler, W. de la Mare and D. Welsford (Australia)
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A summary of the commercial fishery for mackerel icefish Champsocephalus gunnari in Subarea 48.3 during the 1997/98 season
0.21 tonnes. The vessel's fishing master had no experience of fishing for icefish and was not well ... Abstract: During the 1 997198 season, one vessel, Chilean registered stern trawler Betanzos ... days between 25 December 1997 and 5 January 1998. The total catch of C. gunnari was 5.04 tonnes in 34 ... hauls. 67% of this catch was taken in just two hauls, confirming the patchy distribution of this species ...
Meeting Document : WG-FSA-98/53 : Autor(es): G. Parkes, A. King and C. Jones (United Kingdom)
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A characterisation of the toothfish fishery in the Ross Sea region (Subarea 88.1 and SSRUs 88.2A–B) to 2016–17
show no trend on the Shelf, Slope or North. Age frequencies show no uniform trend and are probably ... Abstract: This report summarises fishing catch and effort in the Ross Sea region (Subarea 88.1 ... and SSRUs 882AB) together with biological characteristics of the catch of Antarctic toothfish through ... the 2017 season. In 2017, sea ice constraints were minimal and catch rates were the second highest on ...
Meeting Document : WG-FSA-17/07 : Autor(es): S. Parker and S. Mormede
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Fine-scale genetic investigation into Patagonian toothfish structure within the west Indian Ocean sector of the Southern Ocean
from 1 to 21. There was no evidence for significant mtDNA heterogeneity among the four collections and ... microsatellite loci among the four collections. Both mtDNA and microsatellite FST values indicated no population ... Abstract: Molecular markers were employed to investigate the fine-scale stock structure of ... Patagonian toothfish in the west Indian Ocean sector of the Southern Ocean. Four collections of toothfish ...
Meeting Document : WG-FSA-03/66 : Autor(es): S.A. Appleyard, R. Williams and R.D. Ward (Australia)
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Characterisation of the toothfish fishery in the Ross Sea region (Subarea 88.1 and SSRUs 88.2A–B) through 2018/19
distributions showed no trends in the different management areas; interannual variability is likely driven by ... Abstract: This report summarises fishing catch and effort in the Ross Sea region (Subarea 88.1 ... and SSRUs 88.2AB) together with biological characteristics of the catch of Antarctic toothfish through ... the 2019 season. The implementation of the Ross Sea Region Marine Protected area in December of 2017 ...
Meeting Document : WG-FSA-2019/07 : Autor(es): J. Devine, S. Parker and A. Dunn
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Trophic relations of the cephalopod Martialia hyadesi (Teuthoidea: Ommastrephidae) at the Antarctic Polar Front, Scotia Sea
squid mantle length. Over the size range of squid in the sample there was no relationship between size ... Abstract: Samples of the squid, Martialia hyadesi, were collected aboard two Japanese squid ... jigging vessels carrying out commercial fishing trials at the Antarctic Polar Frontal Zone, north Scotia ... Sea in February 1989. The dissected stomachs of 61 specimens were classified according to fullness and ...
Meeting Document : SC-CAMLR-XI/BG/11 : Autor(es): Delegation of United Kingdom
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Results of the Dissostichus spp. new fisheries projects in the Antarctic region (CCAMLR Statistical Subareas 48.1, 48.2 and 88.3)
were used for the operations, with variable quantities of fishhooks (1 440-4 320), No. 9 Mustard Kirby ... part of the New Fisheries Projects developed by Chile, mainly in order to establish presence of ... Dissostichus spp. in the CCAMLR Statistical Subareas 48.1, 48.2 and 88.3. Industrial longlines Spanish system ... ) were used as bait. The results of this research indicated that the Antarctic toothfish (D. mawsoni) was ...
Meeting Document : SC-CAMLR-XVII/BG/07 Rev. 1 : Autor(es): Delegation of Chile
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Evaluation of the effects of illegal, unregulated and unreported (IUU) fishing on the legal catch of fisheries for Dissostichus eleginoides
no future IUU fishing. If there was no IUU fishing, the long-term sustainable annual yield is set ... , assuming no more IUU fishing takes place following the assessment. The consequence of IUU fishing is a ... , Dissostichus eleginoides, that can be sustained over the generation time of the species, maintaining the ... population at a productive level with only a small chance of become depleted. The increasing levels of ...
Meeting Document : WG-FSA-02/69 : Autor(es): A.J. Constable (Australia)