Résultats de la recherche

1. Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.3a

   least 3 years with the same sample size as decided at the last CCAMLR meeting for the current research ... and observer data. The stock size estimate for a research block (5843a) was revised following advice ... block in such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ... to estimate appropriate catch limit, we propose to conduct the current research operation for at ...

   Meeting Document : WG-FSA-13/40 : Auteur(s): Delegation of Japan

2. Revised growth and length-weight parameters for Antarctic toothfish in the Ross Sea region (881 & 882AB)

   Abstract:  We update the estimates of the growth and length-weight parameters for Antarctic ... estimates of the von Bertalanffy growth curves, estimates of mean length at age using maximum likelihood ... approximated by the MLE mean length at age relationship rather than by the von Bertalanffy equation. Stock ... between the revised von Bertalanffy and the MLE mean length at age model. In this case, the model ...

   Meeting Document : WG-FSA-2019/11 : Auteur(s): A. Dunn and S. Parker

3. A critical re-examination of the evidence for a possible dependence of Weddell seals (Leptonychotes weddellii) on Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea, Antarctica

   Abstract:  There is presently debate over the degree to which the fishery for Antarctic toothfish ... the potential contribution of toothfish to the diet of Weddell seals using an isotope mixing model ... -energy food resource for Weddell seals that possibly cannot be adequately replaced by other prey, in ... estimates.  While large (>30 g) silverfish occurring at high densities are a valuable nutritional ...

   Meeting Document : WG-EMM-13/28 : Auteur(s): R. Eisert, M.H. Pinkerton (New Zealand), S.D. Newsome and O.T. Oftedal (USA)

4. Draft MPA Report for the South Orkney Islands, Subarea 48.2; Part of CCAMLR MPA Planning Domain 1, Western Peninsula – South Scotia Arc

   plans and research and monitoring plans for CCAMLR MPAs. We develop a worked example of the management ... plan, research and monitoring plan and threats analysis for the South Orkney Islands southern shelf MPA ... which falls within CCAMLR MPA Planning Domain 1. We suggest that this CCAMLR MPA Report for the South ... Orkney Islands could form the basis for the MPA Report for CCAMLR MPA Planning Domain 1. We propose that ...

   Meeting Document : WG-EMM-13/10 : Auteur(s): P. Trathan and S. Grant (United Kingdom)

5. 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 : Auteur(s): Delegations of Japan and South Africa

6. 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 : Auteur(s): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA)

7. 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 : Auteur(s): Delegation of the Republic of Korea

8. 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 : Auteur(s): T. Okuda

9. 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 : Auteur(s): T. Peatman, J. Moir Clark, D.J. Agnew (UK)

10. 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 : Auteur(s): K.R. Kerry, D.J. Agnew, J.R. Clarke and G.D. Else (Australia)

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