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Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Subarea 48.6 by South Africa and Japan
addition, we considered that only recaptures for 1 year at liberty is effective to estimate the ... abnormal data for the two vessels in block 48.6_2, therefore we removed the data for the current analysis ... distribution of sizes, GSI and Fulton’s condition factors for D. mawsoni in Subarea 48.6 suggest that northward ... that larvae are driven further eastward. We cannot identify an appropriate stock unit currently. The ...
Meeting Document : WG-SAM-16/07 : Autor(es): Delegations of Japan and South Africa
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Conditions for the precise measurement of fish target strength in situ
Abstract: Conditions for precise measurement of in situ fish target strength (TS) are empirically ... studied and two indexes are introduced for this purpose. One is the number of fish in the effective ... calibration between Japanese and U.S. vessels on 15 and 16 August 1991. Published in J.Mar.Acoust.Soc. Author ... (s): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA) Title: Conditions for the precise ...
Meeting Document : WG-Krill-94/35 : Autor(es): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA)
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Progress report on the Korean exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in 2014/15
706 individuals were tagged and released for tagging recovery. And both of tagging rate and tag ... overlap rate were over 5, and reached about 80%, respectively. To get biological information, it was ... environment were conducted for sampling fishes and plankton, getting information through CTD (Micro CAT ... continuously due to weather condition and freezing floating ice. While conducting surveys, one of nets for ...
Meeting Document : WG-SAM-15/35 : Autor(es): Delegation of the Republic of Korea
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Preliminary results of stock estimation for D. mawsoni using CASAL in the research block 48.6_2
Abstract: A preliminal CASAL model was constructed for D. mawsoni at the research block 48.6_2 ... . The model assumes that single sex and age structured model without considering IUU. Tag release data ... during 2012–2017 was used. Catch data during 2006–2017 was used as fishery data. In the MPD, age and ... seems to converge well, We need futher discussion to improve the CASAL model for D. mawsoni at Subarea ...
Meeting Document : WG-FSA-18/72 : Autor(es): T. Okuda
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ESTIMATION OF MANAGEMENT REFERENCE POINTS CONSISTENT WITH THE CATCH TRIGGER LEVEL FOR THE ANTARCTIC KRILL FISHERY IN AREA 48
biomass reference points for the krill fishery in CCAMLR Area 48 consistent with the catch trigger level ... of F and SSB reference points for the krill stock in Area 48 consistent with the catch trigger level ... are 0.0159 (95 % CIs: 0.00750 – 0.0357) and 97.7 % SSB0 (80 % CIs: 71.6 – 135 %) respectively. In ... comparison, the F and SSB reference points for the precautionary catch limit of 5.61 million tonnes are 0.186 ...
Meeting Document : WG-EMM-11/17 : Autor(es): T. Peatman, J. Moir Clark, D.J. Agnew (UK)
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The use of morphometric parameters for the determination of sex of Adelie penguins
morphometric parameters was examined for breeding birds of known sex at Bechervaise Island near Mawson Station ... discriminant score be determined for a single operator and at each breeding colony to reduce these sources of ... . However, to be 100% certain of the sex of birds, 80% of the total measured sample would have to be ... . The usefulness of discriminant analysis for sex determination of Adélie penguins for applied ...
Meeting Document : WG-CEMP-91/5 Rev. 1 : Autor(es): K.R. Kerry, D.J. Agnew, J.R. Clarke and G.D. Else (Australia)
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Development of a spatially-explicit minimum realistic model for Antarctic toothfish (Dissostichus mawsoni) and its main prey (Macrouridae and Channichthyidae) in the Ross Sea
spatially explicit model using a predator-prey suitability model for the Ross Sea Region. We model the age ... the predicted population changes with available abundance data for each species to develop hypotheses ... tool for evaluating potential impacts of the fishery on key prey species, and for assessing and ... designing monitoring tools for fish species associated with the toothfish fishery. We recommend targeted ...
Meeting Document : WG-EMM-14/51 : Autor(es): S. Mormede, M. Pinkerton, A. Dunn, S. Hanchet and S. Parker (New Zealand)
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Krill biomass estimates for South Georgia, December and January 1996/97
conducted within two 80 x 100 km areas over the shelf-break to the north-east and north-west of South ... krill biomass for each transect. Transect values were used to derive weighted mean (and variance ... (18.44) for the eastern and western boxes respectively. These mean density values were similar to those ... , J.L., Brierley, A.S. Title: Krill biomass estimates for South Georgia, December and January 1996/97 ...
Meeting Document : WG-EMM-97/48 : Autor(es): Goss, C., Watkins, J.L., Brierley, A.S.
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A tagging protocol for toothfish (Dissostichus spp.) in the Ross Sea
Abstract: This paper presents a protocol for the tag and release of toothfish (Dissostichus sp ... , tag treatments and data recording requirements for the programme. Examples of reporting forms for ... tagging protocol for toothfish (Dissostichus spp.) in the Ross Sea Approval: Approved ...
Meeting Document : WG-FSA-03/90 : Autor(es): N.W.McL. Smith and K.J. Sullivan (New Zealand)
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Revised research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Subarea 48.6 by South Africa and Japan
order to identify an appropriate stock unit in the future. The stock sizes for research blocks were ... recaptures were concentrated in the southern area. We considered that recaptures for 3 years at liberty is ... in 2016. We have used extracted data provided by CCAMLR Secretariat in this late August for the ... Fulton’s condition factors for D. mawsoni in Subarea 48.6 suggest that northward spawning migration and ...
Meeting Document : WG-FSA-16/32 Rev. 1 : Autor(es): Delegations of Japan and South Africa