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Ecosystem modelling for the Antarctic krill fishery
but there is concern that the reduction in krill biomass due tome fishery may have impacts on other ... . This can be achieved by studying community interactions, such as those between predators and preys, as ... University of Concepcion, Chile with the Fisheries Centre at University of British Columbia, Canada. In a ... pilot study Ecopath with Ecosim 4.0 is being used to develop two mass-balance models of the Antarctic ...
Meeting Document : WG-EMM-01/65 : Автор(ы): T. Antezana, J. Cornejo, E. Bredesen, P. Faundez (Chile), A.W. Trites and T. Pitcher (Canada)
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Diet composition of Champsocephalus gunnari in Subarea 48.3, Dr Eduardo Holmberg survey, February/ March 1994
summer season; a fact that might be related with a significant change in surface temperature observed ... the coefficient Q (%) showed a greater importance of T. gaudichaudii with respect to krill. It is ... Georgia, in parallel with the virtual absence of mysids and Thysanoessa spp.. Krill was available for fish ... possible that the inconsistencies found between the results obtained by both methods are due to a ...
Meeting Document : WG-FSA-94/27 : Автор(ы): E. Barrera-Oro, R. Casaux and A. Roux (Argentina)
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Phytoplankton standing stocks in relation to krill in Antarctic waters
lies between latitude 56° to 61° 17039;s and longitude 30° to 40°E is characterized by cold surface ... waters with temperature ranging from 0 to 3° C and high nutrient content. Phytoplankton cell counts in ... , with values ranging from 9.8 to 303.7m1/100m3. While the total catch per (IKMT) trawl ranged from 0.2 ... planktonic communities. The results indicate that areas favouring phytoplankton blooms and zooplankton ...
Meeting Document : WG-EMM-98/34 : Автор(ы): X.N. Verlecar, R. Vijayakumar, F. Saldhana and L. Martins (India)
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Revised reports on abundance and biological information of toothfish in Division 58.4.4 a & b by Shinsei maru No. 3 in 2012/13 season
. It seems that larger fish > 140 cm are more damaged than smaller ones, which is consistent with ... relatively higher in 2011 but showed no clear tendencies with the years in SSRU C. Fish in single-hooked and ... the results in 2011/12 season. The possible maximum tagging rate was calculated to be 30.1 fish per ... recaptured in the same SSRU. No set was affected by killer whales in both SSRUs. Author(s): K. Taki, T ...
Meeting Document : WG-FSA-13/34 : Автор(ы): K. Taki, T. Ichii, T. Iwami and M. Kiyota (Japan)
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Aspects of the ecology of the bigeye grenadier at South Georgia
estimates suggest that M. holotrachys is a long lived and moderately slow growing species, reaching ages of ... index were found to be low (M= 0.09 And? = 2.82 respectively). Gonad maturity stage was described from ... macroscopic and histological investigation. Mature ovaries had oocytes at all developmental stages with ... between 22 and 55% likely to be spawned each year. Absolute fecundity ranged from 22,000 to 260,000 eggs ...
Meeting Document : WG-FSA-03/16 : Автор(ы): S.A. Morley, T. Mulvey, J. Dickson and M. Belchier (United Kingdom)
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Results of the Dissostichus spp. new fisheries projects in the Antarctic region (CCAMLR Statistical Subareas 48.1, 48.2 and 88.3)
were used for the operations, with variable quantities of fishhooks (1 440-4 320), No. 9 Mustard Kirby ... ) were used as bait. The results of this research indicated that the Antarctic toothfish (D. mawsoni) was ... registered on the surroundings of Pedro I Island (Latitude 68°49039;S), and from the Bellingshausen Sea ... (Latitude 70038039;S) to the Clarence and Elephant Islands (Latitude 61°14039;S). While the Patagonian ...
Meeting Document : SC-CAMLR-XVII/BG/07 Rev. 1 : Автор(ы): Delegation of Chile
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Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea
viewed with transmitted white light provided the clearest growth bands, but reading precision was low ... maximum age was 14 years, but this should be regarded as a conservative estimate of longevity because of ... the possibility that thorn growth ceases in large individuals. Von Bertalanffy growth curves are ... = 70.8(1-e-0.308[t+1.10]), where Lt is the pelvic length (PL) in centimetres at age t. Applying this ...
Meeting Document : WG-FSA-04/29 : Автор(ы): M.P. Francis and C. Ó Maolagáin (New Zealand)
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By-catch of juvenile Antarctic fish from krill (Euphausia superba Dana) fisheries in the South Georgia area, in 1992
the period from May to August) the total elimination of C.gunnari and N.larseni is estimated to be ... % when only tows made in shelf waters were considered. Juvenile fish abundance, normalised to 1 t of ... results obtained from krill fisheries of the Ukrainian fleet in the South Georgia area (35 500 t within ...
Meeting Document : WG-FSA-93/8 Rev. 1 : Автор(ы): E.A. Pakhomov and S.A. Pankratov (Ukraine)
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An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging program in Subareas 88.1 and 88.2 for 2006/07
that assumptions of homogeneous mixing may need to be investigated. For the first time, long distance ... and 88.2 since 2001 are updated. The paper provides a preliminary update of the tag-release and tag ... -recapture data that were presented at the October 2006 meeting of WG-FSA by including data from New Zealand ... vessels and preliminary data for other vessels that fished in 2007. Release and recapture data that ...
Meeting Document : WG-SAM-07/5 : Автор(ы): A. Dunn, S.M. Hanchet and S.L. Ballara (New Zealand)
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Development of best practices for the collection of longline data to facilitate research and analysis to reduce by-catch: report of a workshop held at the International Fisheries Observer Conference
” in observer data collections. The workshop was held in conjunction with the International Fisheries ... on variables that are critical, preferred, optimal, or not important to facilitate research and ... systematically that might facilitate research and analysis to reduce bycatch of protected species. • Coordinate ... with observer program staff to understand data collection limitations. • Recommend best practices for ...
Meeting Document : WG-FSA-05/45 : Автор(ы): K.S. Dietrich, K.S. Rivera, V. Cornish and T. Conant (USA)
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