Résultats de la recherche
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A von Bertalanffy growth model for Division 58.5.2 fitted to length-at-age data and a comparison of predicted with observed growth from mark–recapture data
of AGR using the MLPLB estimated VB parameters were closer to the mean trend in observed values with ... years old) to the VB model is also given in order to give more realistic predictions of mean length-at ... and showed that the bias is relatively small for the range of release lengths in the data. Predictions ... ) data used to obtain the samples of fish for ageing used length-bin sampling involving a fixed sample ...
Meeting Document : WG-FSA-SAM-06/07 : Auteur(s): S.G. Candy, A.J. Constable, T. Lamb and R. Williams (Australia)
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RESOURCES EVALUATION OF ANTARCTIC KRILL EUPHAUSIA SUPERBA DANA USING AREAL TRAWLING AND HYDRO-ACOUSTIC DATA
revealed. Standard measures for the population densities of krill in natural habitat are not available ... krill and minimizing miscalculations in evaluations of congestions. Evaluations regime applied for the ... in evaluating the density of populations. Author(s): L.A. Kovalchuk (Ukraine) Title: RESOURCES ... analyses procedures applied for trawling and hydro-acoustic sampling have to in compliance with the rules ...
Meeting Document : WG-SAM-08/P01 : Auteur(s): L.A. Kovalchuk (Ukraine)
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An evaluation of reduced target strength estimates reported for krill (Euphausia superba)
assumptions made in calculating target strength. Whether the results of these papers are valid is critically ... ) density dependent effects; and 3) compounding of diel effects. The possible bias in the calculations of ... there is 8-12 db of possible error in the calculations. This is most if not all of the difference cited ... on the same experiment and report new calculations of the target strength of krill (Euphausia superba ...
Meeting Document : WG-KRILL-90/13 : Auteur(s): M.C. Macaulay (USA)
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Distribution of Antarctic krill concentrations exploited by Japanese krill trawlers and minke whates
sectors. In early summer (December) the areas of operation for both fisheries were affected by the ... latitudinal position and shape of the pack-ice edge. Harvesting was frequently conducted in the vicinity of a ... distribution. Krill harvesting areas in the vicinity of the shelf breaks were often coincident with ... Abstract: The distribution of krill (Euphausia superba) concentrations derived from Japanese ...
Meeting Document : SC-CAMLR-VIII/BG/31 : Auteur(s): Delegation of Japan
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SOME FIELD MATERIALS ON AREA AND SEASON OF ANTARCTIC TOOTHFISH SPAWNING
to select locations and periods of Antarctic toothfish mass spawning in some areas of the Pacific ... Ocean and Indian Ocean sectors of the Antarctic. In the Ross Sea area the most probable areas are the ... Abstract: On the results of some field materials collected from 2002 till 2008, on the basis of ... Pacific Antarctic Ridge and the Amundsen Ridge in the Amundsen Sea area. In the Cooperation Sea area the ...
Meeting Document : WG-FSA-08/14 : Auteur(s): V. Prutko (Ukraine)
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Histopathology of Antarctic krill (Euphausia superba) bearing black spots
onboard a krill fishing vessel in the winter of 2003 and 2006 in the South Georgia region, the Antarctic ... secondary. The development of the tumor-like cell mass in the gonad may be the primary condition, although ... Ocean, approximately 2-5% of sub-samples of 100 krill bore small black spots. The black spots were most ... often found on the cephalothorax of the body. Three bacteria were isolated from these black spots, and ...
Meeting Document : WG-EMM-07/29 : Auteur(s): S. Miwa, T. Kamaishi, T. Matsuyama, T. Hayashi and M. Naganobu (Japan)
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Identification and speciation of Antarctic skates
(COI) were sequenced in 9 species of Bathyraja skates from the Southern Oceans and New Zealand. Based ... species in the Ross Sea. A field key for identification of Ross Sea skates is provided. Author(s): P.J ... Bathyraja n. sp. cf eatonii. There was no sequence divergence among samples of B. n. sp. “dwarf” from the ... Ross Sea and South Atlantic. However, for Bathyraja n. sp. cf. eatonii and Bathyraja maccaini in the ...
Meeting Document : WG-FSA-07/27 : Auteur(s): P.J. Smith, C.D. Roberts, A.L. Stewart, M. McVeagh and C.D. Struthers (New Zealand)
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A representative system of CCAMLR MPAs: taking stock and moving forward
Abstract: The adoption of the Ross Sea MPA in 2016 marked "the end of the beginning" of ... establishing a representative system of MPAs in the Convention Area. This paper provides an overview of the ... progress made by CCAMLR toward establishing a representative system of MPAs in the Southern Ocean ... realises the potential of MPAs to enhance science and governance in Antarctica, including with respect to ...
Meeting Document : CCAMLR-XXXVI/BG/25 Rev. 2 : Auteur(s): Submitted by ASOC
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Trophic study of Ross Sea Antarctic toothfish (Dissostichus mawsoni) using carbon and nitrogen stable isotopes
variables in explaining the variation of δ15N and δ13C. Positive relationships between length and δ15N ... and Terra Nova Bay Trench. In contrast, all of the four potential prey species caught in the Northern ... range of 7 ‰ (9–16 ‰) in δ15N, which is equivalent to two trophic steps. All fish, except Antimora ... implies that the diet of all species sampled was variable, or that individual species were eating a ...
Meeting Document : WG-EMM-08/27 : Auteur(s): S.J. Bury, M.H. Pinkerton, D.R. Thompson, S. Hanchet, J. Brown and I. Vorster (New Zealand)
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Ideal survey patterns: an example of using a simulated world
relative abundance of the population? How well can this method detect changes in the abundance of the ... strength of the simulation method in answering these questions and in exploring the efficacy of survey ... criteria. The shot selection criteria can be either that locations of known good quality are preferentially ... selected or that locations are selected at random. The landscape and fishery are simulated in a spatially ...
Meeting Document : WG-FSA-01/75 : Auteur(s): I.R. Ball and A.J. Constable (Australia)