Search results
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Analysis of the by-catch of Channichthys rhinoceratus and Lepidonotothen squamifrons from the fisheries at Heard Island and the McDonald Islands (Division 58.5.2)
in this study shows that both species are widespread over the plateau in waters of <1000 m. In most areas ... they occur at densities <100 kg.km-2, but each species has separate areas of aggregation where densities ... in this study shows that both species are widespread over the plateau in waters of <1000 m. In most areas ... they occur at densities <100 kg.km-2, but each species has separate areas of aggregation where densities ...
Meeting Document : WG-FSA-12/24 : Author(s): G.B. Nowara, D.C. Welsford, S.G. Candy and T.D. Lamb (Australia)
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ECOLOGICAL REPERCUSSIONS OF HISTORICAL FISH EXTRACTION FROM THE SOUTHERN OCEAN
stocks were on average reduced to <50%, and finally (mid-1980s) to <20%, of original size. Despite ... on average reduced to <50%, and finally (mid-1980s) to <20%, of original size. Despite management ...
Meeting Document : WG-EMM-08/P07 : Author(s): D. Ainley and L. Blight
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Diet composition and feeding strategy of Antarctic toothfish, Dissostichus mawsoni in the research blocks 58 and 88 for the exploratory longline fishery in 2014–2018 of Korea
, and mammals. In this study, fishes were the dominant prey item in all size classes (<100 cm, 100-120 cm ... , 120-140 cm, 140-160 cm, 160< cm). The graphical method for feeding strategy revealed ... , and mammals. In this study, fishes were the dominant prey item in all size classes (<100 cm, 100-120 cm ... , 120-140 cm, 140-160 cm, 160< cm). The graphical method for feeding strategy revealed ...
Meeting Document : WG-FSA-18/24 : Author(s): G.W. Baeck, S.-G. Choi, S. Chung and D.H. An
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Validation of sink rates of longlines measured by two different methods
was statistically significant (t5 =-2.720, P = 0.042). Measuring sink rates to > 10 m proved difficult ... and unreliable with bottles. Bottles had a higher failure rate (51 – 68 %) than TDRs (> 90 %), for example ... be an appropriate means for measuring sink rates to shallow depths (> 5 m) that they should not be used ...
Meeting Document : WG-FSA-03/62 : Author(s): B. Wienecke and G. Robertson (Australia)
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Revised reports on abundance and biological information of toothfish in Division 58.4.3b by Shinsei Maru No.3 in 2010/11 and proposal of the consecutive survey in 2011/12
, P < 0.05), with the higher percentage of bad condition (54.6 %) for trotline. It seems that smaller ... fish < 80 cm are more damaged than larger ones for trotline system in D. eleginoides. An approximate ... , P < 0.05), with the higher percentage of bad condition (54.6 %) for trotline. It seems that smaller ... fish < 80 cm are more damaged than larger ones for trotline system in D. eleginoides ...
Meeting Document : WG-FSA-11/13 Rev. 1 : Author(s): K. Taki, T. Iwami and M. Kiyota (Japan)
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Estimation and correction of migration-related bias in the tag-based stock assessment of Patagonian toothfish in Division 58.5.2
% and was insensitive to the time period of longline tag releases used. For annual migration rates <2%, consistent ... from simulations was <5%. We demonstrated that the bias can be corrected by increasing the tag ... % and was insensitive to the time period of longline tag releases used. For annual migration rates <2%, consistent ... from simulations was <5%. We demonstrated that the bias can be corrected by increasing the tag ...
Meeting Document : WG-SAM-17/11 : Author(s): P. Burch, P. Ziegler, D. Welsford and C. Péron
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Survey results on abundance and biology of toothfish in Division 58.4.3b by Shinsei maru No.3 during 2006/07–2011/12 and proposal of the consecutive survey in 2012/13
and downward tendencies with years. D. mawsoni mainly occurred in the shallower areas > 1 200 ... but rarely occurred in the deeper areas > 1 400 m. Progressed stages of GMI and high GSIs for D. mawsoni ... and downward tendencies with years. D. mawsoni mainly occurred in the shallower areas > 1 200 ... m depths but rarely occurred in the deeper areas > 1 400 m. Progressed stages of GMI and high GSIs ...
Meeting Document : WG-FSA-12/56 : Author(s): K. Taki, T. Iwami, M. Kiyota and T. Ichii (Japan)
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Distribution, demography and discard mortality of crabs caught as by-catch in an experimental pot fishery for toothfish in the South Atlantic
(>99% of P. formosa, >97% of P. spinosissima and >90% of P. anamerae) were lively on arrival ...
Meeting Document : WG-FSA-01/32 : Author(s): M.G. Purves (South Africa), D.J. Agnew, G. Moreno, C. Yau and G. Pilling (United Kingdom)
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Preliminary results of age determination by otolith mass in mackerel icefish Champsocephalus gunnari Lonnberg 1905 in the Heard Island area (Australia)
analysis method. Five age groups were defined. Bertalanffi linear growth equation was calculated: Lt=41.73 ... groups were defined. Bertalanffi linear growth equation was calculated: Lt=41.73 (1-e-0.5149(1+0.05225 ...
Meeting Document : WG-FSA-94/08 : Author(s): I.B. Russelo (Ukraine)
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UPDATED KRILL RECRUITMENT DATA FOR THE ELEPHANT ISLAND REGION OF THE SOUTH SHETLAND ISLANDS, ANTARCTICA; 2002-2008
derived from the CMIX procedure, and were also derived as a proportion of the <30 mm length class ... the CMIX procedure, and were also derived as a proportion of the <30 mm length class for day and night ...
Meeting Document : WG-EMM-08/41 : Author(s): C. Reiss (USA)