Search results
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A study of Patagonian toothfish (Dissostichus eleginoides) post tagging survivorship in Subarea 48.3
Abstract: During the 2005 fishing season experiments on the survivorship of post-tag toothfish ... , and then were kept in tanks with varying degrees of seawater replacement for at least 12 hours after ... tagging. On one vessel fish with a variety of injuries were selected to see if this affected recovery. 395 ... animals were included in the final analysis, with an overall survivorship of 89%. There were significant ...
Meeting Document : WG-FSA-05/19 : Author(s): D. J. Agnew, J. Moir Clark, P.A. McCarthy, M. Unwin, M. Ward, L. Jones (United Kingdom), G. Breedt, S. Du Plessis, J. Van Heerdon (South Africa) and G. Moreno (Spain)
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Fine-scale genetic investigation into Patagonian toothfish structure within the west Indian Ocean sector of the Southern Ocean
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 ... genetically using two fragments of mtDNA and seven nuclear microsatellite loci. MtDNA haplotype diversity was ... sub-structuring among the collections. Genetic variance estimates of both mtDNA (?ST=-0.016) and ...
Meeting Document : WG-FSA-03/66 : Author(s): S.A. Appleyard, R. Williams and R.D. Ward (Australia)
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Revised research plan for the Spanish exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2: Fundamentals and procedures (this is a revision of WG-SAM-12/13)
Abstract: A revision of the research plan for the Spanish exploratory longline fishery for ... suggestions made by the Working Group is presented. Two methods to estimate the local biomass of the toothfish ... are proposed, a depletion experiment together with the tag of some specimens using the DeLury model ... with four different scenarios related to the extent of the area. The regression coefficients between ...
Meeting Document : WG-FSA-12/69 : Author(s): R. Sarralde, L.J López Abellán and S. Barreiro (Spain)
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Congruent, decreasing trends of Gentoo Penguins and Crozet Shags at sub-Antarctic Marion Island suggest food limitation through common environmental forcing
Abstract: Numbers of Gentoo Penguins Pygoscelis papua and Crozet Shags Phalacrocorax [atriceps ... ] melanogenis breeding annually at Marion Island, one of South Africa’s Prince Edward Islands in the south-west ... -2000s were associated with improved breeding success. At a colony of Gentoo Penguins, breeding success ... was negatively correlated with the date of arrival of adults to breed. Gentoo Penguins and Crozet ...
Meeting Document : WG-EMM-14/P09 Rev. 1 : Author(s): R.J.M. Crawford, B.M. Dyer, L. Upfold and A.B. Makhado
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Progress report of the CEMP Special Fund overwinter penguin tracking project
Abstract: We provide a brief update on the progress of our project “Tracking the overwinter ... habitat use of krill-dependent predators from Subarea 48.1”. The project was initiated with support from ... the CEMP Special Fund in 2015/16. With the assistance of the Secretariat, we purchased 150 ARGOS-based ... tags). Data collection continues for one juvenile penguin and 50 adult penguins as of 13 June 2017. In ...
Meeting Document : WG-EMM-17/07 : Author(s): J. Hinke, G. Watters, M. Santos, M. Korczak-Abshire, G. Milinevsky and V. Lytvynov
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The use of Port State measures to improve fisheries compliance at the international levelIssues and instruments – the CCAMLR case
approaches to port State control in order to avoid the development of “ports of convenience” and improve ... fisheries compliance. Possible approaches include the development of regional Memoranda of Understanding ... ) fishing. CCAMLR is generally regarded as a good regional model in the area of port State control. Hence ... , to encourage the application of similar approaches in those Regional Fisheries Management ...
Meeting Document : CCAMLR-XXV/BG/29 : Author(s): Submitted by ASOC
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The diet of the blue-eyed shag, Phalacrocorax atriceps bransfieldensis at the west Antarctic Peninsula
Abstract: The diet of the Antarctic Blue-eyed Shag Phalacrocorax atriceps bransfieldensis was ... analyzed based on the identification of the prey items in 50 regurgitated casts collected at Duthoit Point ... . Fish remains occurred in 100% of the casts and represented 68% by number and 90% by weight of the total ... prey items. From a total of 2112 otoliths found, 1176 fish specimens were identified belonging to 4 ...
Meeting Document : WG-CEMP-93/26 Rev. 1 : Author(s): R. Casaux and E. Barrera-Oro (Argentina)
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Identification of important benthic areas for conservation – using shared data from the Domain 1 MPA planning process
located west of the Antarctic Peninsula in the Bransfield Strait and north of the South Shetland Islands ... , and around the South Orkney Islands. Data layers shared with all CCAMLR Members as part of the Domain ... demonstrates the value of shared datasets in facilitating additional, supporting analyses for MPA planning. The ... range of available data also has relevance to a wide variety of other CCAMLR work, in addition to MPA ...
Meeting Document : WG-EMM-16/35 : Author(s): M. Bristow, S. Grant, M. Santos and A. Capurro
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Genetic identification of fish caught as by-catch in the Antarctic krill fishery and comparison with observer records
identifications made on vessels by scientific observers. A total of 344 fish (primarily in the families ... ; however, DNA results show several less common Notothenidae species were identified as L. larseni. All of ... DNA barcoding. Many of the specimens (n=136) were recorded to family-level by observers; genetic ... barcoding markers allowed these specimens to be assigned to species level. The diversity of fish identified ...
Meeting Document : WG-EMM-18/30 : Author(s): A. Polanowski, J. Clark, D. Maschette, D. Welsford and B. Deagle
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Spatial distribution and population structure of juvenile Antarctic toothfish (Dissostichus mawsoni) in the South Shetland Islands (Subarea 48.1)
structure of juvenile D. mawsoni caught during bottom trawl survey on the shelves around the South Shetland ... abundant between 100 and 300 m depth. The sampled population was composed of 150 specimens measuring ... between 22 and 78 cm TL, equally distributed between sexes, most of them with gonads at immature stage of ... factor. Based on counts of annual growth increments from sagittal otolith sections, age estimates ranged ...
Meeting Document : WG-FSA-18/45 : Author(s): M. La Mesa, E. Riginella and C.D. Jones