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Otolith and body size relationships in the mackerel icefish (Champsocephalus gunnari)
Paper Title: Otolith and body size relationships in the mackerel icefish (Champsocephalus gunnari ... ) Abstract / Description: A large sample of otoliths from the mackerel icefish (Champsocephalus gunnari) was ... measured and weighed and their effectiveness as predictors of fish length and fish mass determined. The two ... measures, otolith length and otolith mass, provide good predictors of fish length, the latter being ... same for each survey; details of a typical example are set out in Everson et al. (1991). During the ... fit (F4846 = 1.86, p > 0.05). The parallel-line model accounted for 85.1% of the variance in the ... > 0.05). The parallel-line model accounted for 92.0% of the variance in the data. In all of the above ... included as a factor in any of the other analyses. The fitted models were used to generate predictions ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 117–123 : Autor(es): Everson, I., B. Bendall and A. Murray
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Barcoding and beyond: applications and developments for biodiversity evaluation in the Southern Ocean
Abstract: DNA barcoding is a valuable tool for biodiversity studies in the Southern Ocean. It can ... be combined with other types of systematics data (morphology, other sequence markers) to reassess the ... for fisheries, ecology or large scale biodiversity surveys. The rise of Next Generation Sequencing ... (NGS) techniques in the last 15 years has provided exciting new developments in classical barcoding ...
Meeting Document : WG-EMM-2019/54 : Autor(es): A. Dettai, G. Duhamel, C. Gallut, M. Eléaume and A. Martin
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LENGTH-BASED ASSESSMENT FOR THE MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) IN SUB-AREA 48.3
identification of cohorts from the survey model, given the differential age structures observed in the population ... distribution of the population from the survey data which, in conjunction with the bootstrapped survey biomass ... Abstract: The current assessment method for the mackerel icefish (Champsocephalus gunnari) in sub ... this issue of determining cohorts, using stratified bootstrap techniques to estimate the length ...
Meeting Document : WG-SAM-09/15 : Autor(es): R.M. Hillary, D.J. Agnew and R. Mitchell (United Kingdom)
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Penguins, fur seals, and fishing: prey requirements and potential competition in the South Shetland Islands, Antarctica
may have a significant effect on krill abundance, we estimated the energy and prey requirements of ... commercial krill fishery harvest m the South Shetland Island region (1.0 x 108 kg) was approximately 12% of ... , and may affect prey availability to penguins and fur seals. This differs from the conclusions of Ichii ... , and fishing: prey requirements and potential competition in the South Shetland Islands, Antarctica ...
Meeting Document : WG-EMM-99/57 : Autor(es): D.A. Croll and B.R. Tershy (USA)
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THE ANTARCTIC KRILL AND ECOSYSTEM SURVEY WITH R/V “G. O. SARS” IN 2008
purposes for the AKES project were to • evaluate the links between the krill resources and distribution in ... (Target strength; the ability of an organism to reflect sound) for krill and ice fish • study aggregations ... of krill, fish and plankton relative to the hydrography • compare aggregations and abundance of krill ... Abstract: This report describes the multipurpose AKES survey (Antarctic Krill and Ecosystem ...
Meeting Document : WG-EMM-08/28 : Autor(es): S.A. Iversen (Norway), W. Melle, E. Bagøien, D. Chu, B. Edvardsen, B. Ellertsen, E. Grønningsæter, K. Jørstad, E. Karslbakk, T. Klevjer, T. Knutsen, R. Korneliussen, H. Kowall, B. Krafft, S. Kaartvedt, P.B. Lona, S. Murray, L. Naustvoll, L. Nøttestad, M. Ostrowski, V. Siegel, Ø. Skagseth, G. Skaret, H. Søiland, X. Zhao and C.B. Årnes
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Tests for anomalous years in the CCAMLR index series (draft)
Abstract: The properties of a method for detecting anomalous years in CCAMLR index series are ... obtained on the assumption that the series being considered consists of random values from a constant ... from a wide range of distributions. Some examples are given to illustrate the performance of the ... anomalous years in the CCAMLR index series (draft) Approval: Approved ...
Meeting Document : WG-EMM-Stats-97/06 : Autor(es): MacKenzie, D., Manly, B.F.
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Investigations on tagging data in the Kerguelen Islands Patagonian toothfish fishery (division 58.5.1)
Abstract: In 2014, FSA-14-36r1 presented a new assessment of Patagonian toothfish in the French ... EEZ. A singularity in the tagging fits was observed by the working group. A lower number of recaptures ... in the first year compare to the second year was noted (figure1). This paper is an overview of ... tagging data in Kerguelen area and the impacts on the Casal assessment. Author(s): R. Sinegre and G ...
Meeting Document : WG-SAM-15/43 : Autor(es): R. Sinegre and G. Duhamel (France)
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A NON-HIERARCHICAL TAXONOMIC KEY FOR SEABIRD IDENTIFICATION IN THE HEARD ISLAND AND MCDONALD ISLANDS AND KERGUELEN ISLAND FISHERIES.
identification of seabirds that come into contact with or are seen in the vicinity of fishing operations in the ... : A NON-HIERARCHICAL TAXONOMIC KEY FOR SEABIRD IDENTIFICATION IN THE HEARD ISLAND AND MCDONALD ISLANDS ... Abstract: A non-hierarchical seabird identification key has been produced to improve the ... Heard and McDonald Islands region. This paper provides the background and reasoning behind the ...
Meeting Document : WG-FSA-08/54 : Autor(es): J. Fielding, T. Lamb, B. Wienecke (Australia) and N. Gasco (France)
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OTOLITH CHEMISTRY REFLECTS FRONTAL SYSTEMS IN THE ANTARCTIC CIRCUMPOLAR CURRENT
Circumpolar Current in the Southwestern Atlantic Ocean. Mean values differentiated sampling areas by up to 2.6 ... Abstract: Pronounced environmental trends across fronts suggest that the otolith chemistry of ... spatial scales. Trace and minor elements laid down immediately prior to capture – along the edges of ... otoliths from Patagonian toothfish Dissostichus eleginoides – discriminated frontal zones in the Antarctic ...
Meeting Document : WG-FSA-08/P04 - Abstract : Autor(es): J.R. Ashford, A.I. Arkhipkin and C.M. Jones
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Proposal to amend the fishing season for longline vessels fishing for Dissostichus eleginoides in Subarea 48.3 and trial two further 5 day season extensions
Abstract: Following the successful earlier start of the Dissostichus eleginoides fishing season ... in Subarea 48.3 (26th April in 2009/10 and 21st April in 2010/11) this paper summarises the results ... of the past two seasons and proposes moving the beginning of the fishing season to the 21st April ... with a further two five day extensions over the next two years to the 16th and then the 11th April ...
Meeting Document : WG-IMAF-11/09 : Autor(es): J. Brown (United Kingdom)