Resultados de la búsqueda
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Identification of Pleuragramma antarctica larvae in the Ross Sea via mitochondrial DNA
Abstract: Research into the early life stages of Pleuragramma antarctica is essential to ... understanding how oceanographic variation will impact spatial distributions over time. The recent findings of ... , length and growth data for larvae found in the western and eastern Ross Sea during the austral summer of ... genomic DNA from a sample of these larvae and, using fish universal primers, amplified part of the 16S ...
Meeting Document : WG-FSA-15/61 : Autor(es): J.A. Caccavo (Italy), C. Brooks (USA), L. Zane (Italy) and J.R. Ashford (USA)
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Performance metrics to index the spatial coverage of mark-recapture data
Abstract: Understanding the spatial distribution of the release of tagged fish and the subsequent ... spatial coverage of fishing effort to recapture tagged fish is an important consideration when ... measures of spatial overlap and potential bias in the development of tag-based biomass estimates are an ... statistics: (i) a single measure of the degree of spatial overlap between the release of tagged fish and ...
Meeting Document : WG-SAM-16/13 : Autor(es): C. Marsh, A. Dunn and S. Mormede
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Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring
Abstract: The condition and survival of Antarctic krill (Euphausia superba) strongly depends on ... developmental stage. A comprehensive understanding of sea ice habitat use by krill, however, remains largely ... unknown. The aim of this study was to improve the understanding of the krill's interaction with the ... sea ice habitat during winter/early spring by conducting large-scale sampling of the ice-water ...
Meeting Document : WG-EMM-16/P16 : Autor(es): F. Schaafsma, C. David, E. Pakhomov, B. Hunt, B. Lange, H. Flores, J.A. van Franeker
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The random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the waters surrounding Heard Island (Division 58.5.2) for 2017
Abstract: The annual random stratified trawl survey (RSTS) of 2017 at HIMI was conducted during ... April, with the completion of 163 stations. The survey has been conducted on the FV Atlas Cove since ... 2015. Sampling protocols such as the design and the duration of the hauls were similar to recent ... surveys, but with a new set of randomly selected station points. The unstratified density of Dissostichus ...
Meeting Document : WG-FSA-17/14 Rev. 1 : Autor(es): G.B. Nowara, T.D. Lamb and P. Ziegler
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Otolith chemistry reveals local population structure of Antarctic toothfish (Dissostichus mawsoni) within the CCAMLR Subarea 48.6
and economical value and that distributed in the high latitude of the Southern Ocean. The CCAMLR ... subarea 48.6 is one of an important fishing zone, however, the local population structure of D. mawsoni is ... unknown in this regions, which hampered the understanding on population dynamics of this species and the ... management of toothfish fishery. The chemistry in the otolith can often be used to distinguish population ...
Meeting Document : WG-FSA-18/75 : Autor(es): L. Wei, G.P. Zhu, S. Somhlaba, X.Y. Yu and M. Duan
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Advances are urgently needed in providing regular estimates of krill stock status based on the available data
measure (the trigger level) which was established in 1991 and is “not related to the status of the krill ... trigger level is not related to the status of the stock. The establishing terms of reference for WG-EMM ... include requests to “assess the status of krill” and “develop management advice … for management of krill ... fisheries”. Although WG-EMM is now a quarter century old, it rarely assesses the status of the krill stock ...
Meeting Document : WG-EMM-2019/28 : Autor(es): S. Hill, J. Hinke, N. Ratcliffe, P. Trathan and G. Watters
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Distribution of albatrosses and petrels in the WCPFC Convention Area and overlap with WCPFC longline fishing effort
Abstract: This paper presents an analysis of the distribution of albatrosses and petrels in the ... area under the jurisdiction of the Western and Central Pacific Fisheries Commission (WCPFC), using data ... from the BirdLife Global Procellariiform Tracking Database. • The WCPFC area includes 41% of the global ... breeding distribution of albatrosses and petrels. • Albatross distribution is concentrated north of 20ºN ...
Meeting Document : WG-FSA-06/19 : Autor(es): C. Small (BirdLife International)
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By-catch of fishes caught by the fishery vessel Niitaka Maru in the South Georgia area (August to September 2004)
by F/V Niitaka Maru (5306t) were made from August 6 to September 9, 2004 to the north of South ... Georgia Island. Among 100 net hauls quantitatively examined, a total of 12 species belonging to 6 families ... of by-catch fishes were occurred in 76 trawl catches. The family Myctophidae, the most abundant taxa ... during the present survey, were found in 61% of hauls examined. Although only one species, Lepidonotothen ...
Meeting Document : WG-EMM-05/19 : Autor(es): T. Iwami, T. Hayashi, K. Taki and M. Naganobu (Japan)
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Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the global procellariiform tracking database
Abstract: This paper presents an analysis of the distribution of albatrosses and petrels in the ... Procellariiform Tracking Database. The results highlight the importance of the CCAMLR area, particularly for ... breeding distributions of populations of Wandering, Grey-headed, Light-mantled, Black-browed and Sooty ... Albatrosses, and populations of both Northern and Southern Giant-petrel and White-chinned petrel. The ...
Meeting Document : WG-FSA-05/75 : Autor(es): BirdLife International
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2002 winter and 2002/03 breeding season
Abstract: Results of the surveys of entanglement of Antarctic fur seals at Bird Island, South ... reported here. The overall number of entanglements showed a decrease from last year of 55% in winter and 67 ... %. Severe injuries accounted for 33% of entanglements over winter and 25% during the summer. As in previous ... years, most individuals observed entangled in debris were juveniles (88% of winter and 81% of summer ...
Meeting Document : SC-CAMLR-XXII/BG/11 : Autor(es): Delegation of the United Kingdom