Resultados de la búsqueda
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Microincrement analysis in otoliths of Notothenia rossii fingerlings from the South Shetland Islands to estimate early life history timings and to validate annulus formation
phase fingerlings selected from a total sample of 364 early juveniles caught mainly in summer from 2003 ... date of capture showed two main periods of larval hatching separated by 5-6 months, one in late summer ... , indicating a timing of demersal settlement of about eight months from hatching. The age/length frequency ... distribution of fish sampled in spring 2010 showed the simultaneous presence of two different cohorts ...
Meeting Document : WG-FSA-12/04 : Autor(es): E. Barrera-Oro (Argentina) and M. La Mesa (Italy)
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A spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region
% of the depth is deemed suitable as habitat for toothfish (120 cells – semi-restricted model), and ... – restricted model) or allowed to occupy the entire Ross Sea region including depths outside of those normally ... about the distribution of toothfish in areas where no fishing has occurred, such that the unrestricted ... model estimates fish movements into cells outside of the fished area including those with implausible ...
Meeting Document : WG-FSA-13/53 : Autor(es): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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A REVIEW OF THE METHODS USED TO RELEASE SKATES (RAJIIDS), WITH OR WITHOUT TAGS, IN ANTARCTIC EXPLORATORY FISHERIES
line by cutting snoods, and when practical, removing the hooks’. This paper documents the evolution of ... from this programme showing an unquantifiable degree of the survivorship of returned skates, the CCAMLR ... implemented was that some form of in-water release would be the ideal to improve survival chances ... . Subsequently a number of problems have become evident with this method. The Working Group on Fish Stock ...
Meeting Document : WG-FSA-08/30 : Autor(es): J.M. Fenaughty (New Zealand)
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OCCURRENCE OF DWARF MINKE WHALES (BALAENOPTERA ACUTOROSTRATA SUBSP) AROUND THE ANTARCTIC PENINSULA
Abstract: The occurrence of dwarf minke whales (Balaenoptera acutorostrata subsp.) around the ... Antarctic Peninsula was examined based on 406 sightings of minke whales recorded during the Chilean ... Antarctic Scientific Expeditions and other opportunistic cetacean surveys. Identification of the species was ... made only for the whales sighted in the proximity of the vessels when the specific diagnostic ...
Meeting Document : WG-EMM-11/P2 : Autor(es): J. Acevedo, C. Olavarría, J. Plana, A. Aguayo-Lobo, A. Larrea and L.A. Pastene
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A guide to identification of fishes caught along with the Antarctic krill
Abstract: A field key to early life stages of Antarctic fish caught along with the Antarctic ... krill is produced. The key includes 8 families and 28 species mainly from the Atlantic sector of the ... , however, it is impossible to discriminate among species of the same family by remarkable characters. A ... species key is not shown for such resemble species and a brief summary of the main morphological features ...
Meeting Document : WG-EMM-07/32 : Autor(es): T. Iwami and M. Naganobu (Japan)
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Report on the activities of the Scientific Committee on Antarctic Research (SCAR) 2005/06SCAR Observer to CCAMLR
information paper CCAMLR-XXV/BG/23 “Report on the activities of the Scientific Committee on Antarctic Research ... directly to CCAMLR or are of potential interest to CCAMLR. This includes a report on the SCAR XXIX ... and Biodiversity in the Antarctic (EBA) and the Census of Antarctic Marine Life (CAML) projects. CAML ... for CCAMLR. The activities of the Expert Groupss of Birds and Seals are summarised, as well as new ...
Meeting Document : CCAMLR-XXV/BG/22 : Autor(es): SCAR Observer to CCAMLR(G. Hosie, Australia)
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Time series of Drake Passage Oscillation Index (DPOI) from 1952 to 2006, Antarctica
Abstract: An assessment of the environmental processes influencing variability in the recruitment ... and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... krill recruitment and density in the Antarctic Peninsula area with an environmental factor; strength of ... , between Rio Gallegos, Argentina, and Base Esperanza, at the tip of the Antarctic Peninsula during 1982 ...
Meeting Document : WG-EMM-06/13 : Autor(es): M. Naganobu and K. Kutsuwada (Japan)
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Summary of Ross Sea skate tagging programme results
Abstract: Over 9,000 skates have been tagged and released in the Ross Sea over a period of seven ... years, and 47 (0.5%) have been recaptured. The recapture of tagged Amblyraja georgiana after up to four ... years at liberty shows that some skates survive and recover from being hauled out of depths of around ... 1,000 m and tagged. In-water tagging greatly reduces the incidence of broken jaws in skates, and ...
Meeting Document : WG-FSA-06/32 : Autor(es): S.L. Ballara, A. Dunn and M.P. Francis (New Zealand)
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Results of the mark–recapture experiment in Subarea 48.3, 2005
– distributed over the whole of the fishable grounds in 48.3 this year. The Petersen mark-recapture estimator ... from 2004 and 2005 were very similar to each other, whichever selectivity was used: about 62,000 t of ... selectivity functions are more peaked than the Kirkwood shallow selectivity used in 2004. Estimates of ... of vulnerable biomass, resulted in consistent estimates of sustainable yield of about 4,800 t ...
Meeting Document : WG-FSA-05/17 : Autor(es): D.J. Agnew and A. Payne (United Kingdom)
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Diet of grey-headed albatrosses at the Diego Ramírez Islands, Chile: ecological implications
Abstract: The diet of grey-headed albatrosses at Diego Ramírez, Chile, was analyzed and compared ... to that of the sympatric black-browed albatross. Diet composition was inferred from an analysis of ... . The squid Martialia hyadesi predominated in the diet samples in 2001 and 2002 (89% and 81% of ... suggests that M. hyadesi plays an important role in the breeding performance of grey-headed albatrosses at ...
Meeting Document : WG-FSA-04/12 : Autor(es): J. Arata (Chile), G. Robertson (Australia), J. Valencia (Chile), J.C. Xavier (UK) and C.A. Moreno (Chile)