Résultats de la recherche

1. REPORT ON A RANDOM STRATIFIED TRAWL SURVEY TO ESTIMATE DISTRIBUTION AND ABUNDANCE OF DISSOSTICHUS ELEGINOIDES AND CHAMPSOCEPHALUS GUNNARI IN THE HEARD ISLAND REGION (DIVISION 58.5.2) FOR 2008 AND 2009

   Abstract:  The random stratified trawl surveys (RSTS) for 2008 and 2009 were successfully ... completed on the RV Southern Champion, continuing the series that commenced in 1997. Catches in 2008 were ... generally reduced from the previous year’s survey, with the catch of toothfish being one third of that for ... the previous year and those of grey rock cod, unicorn icefish and skate species down by half. Catches ...

   Meeting Document : WG-FSA-09/34 : Auteur(s): G.B. Nowara (Australia)

2. Towards the development of a stock assessment for Patagonian toothfish in Division 58.4.4, SSRU C on Ob and Lena Banks

   Abstract:  Following the advice from the CCAMLR Working Group in WG-SAM in 2012, a preliminary ... -length model. In this preliminary assessment, the model was started in 1990 and catch, proportions at ... length in the catch, and recapture data from SSRU C from 2007/08 to 2011/12 were fitted in the model. The ... suggest suitable fits to the data, however, there appears to be a pattern of increasing YCS over the time ...

   Meeting Document : WG-FSA-12/59 : Auteur(s): K. Taki (Japan)

3. Assessment models for Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H for the years 2002–03 to 2012–13

   Abstract:  This paper presents the Bayesian sex and age structured population stock assessment of ... 88.2C–H). We examined several models including the 2013 implementation of the 2011 base case (R1), using ... the revised data selection method (R2), using a logistic selectivity for the northern fishery (R3 ... ), down-weighting the age data (R4), and having annual age length keys in the north (R5). The stock ...

   Meeting Document : WG-FSA-13/52 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)

4. Research plan for the exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in 2015/16

   Abstract:  Most things related to Dissostichus spp. in the eastern side of Antarctic has not been ... known well as namely the area is data poor areas. In the Division 58.4.1 there are two stocks; one ... extends from the SSRU 58.4.1C to the SSRU 58.4.2A, and the other one to the SSRU 58.4.1H. The population ... sizes were vulnerable with a big range of about 1,000-2,000 t per SSRU in 58.4.1. During the 2004-2014 ...

   Meeting Document : WG-SAM-15/07 : Auteur(s): Delegation of the Republic of Korea

5. Revised research plan for the exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in 2015/16

   Abstract:  Most things related to Dissostichus spp. in the eastern side of Antarctic has not been ... known well as namely the area is data poor areas. In the Division 58.4.1 there are two stocks; one ... extends from the SSRU 58.4.1C to the SSRU 58.4.2A, and the other one to the SSRU 58.4.1H. The population ... sizes were vulnerable with a big range of about 1,000-2,000 t per SSRU in 58.4.1. During the 2004-2014 ...

   Meeting Document : WG-FSA-15/56 : Auteur(s): Delegation of the Republic of Korea

6. Background information to support development of a feedback management strategy for the krill fishery in Subarea 48.1

   Abstract:  Here we compile eight vignettes that, together, provide the background data and ... information needed to support development of a feedback management strategy for the krill fishery in Subarea ... Subarea 48.1 will both facilitate and expedite the allocation of a catch limit in the subarea without ... negatively impacting the krill fishery while simultaneously mitigating risks to krill-dependent predators. We ...

   Meeting Document : WG-EMM-16/45 : Auteur(s): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries

7. An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL

   Division 58.5.2. It updates the model used at WG-FSA in 2006 using data from the 2007 season as well as ... 2006 data not available for WG-FSA in 2006. It also includes the following refinements: (i) estimation ... of the coefficient of variation (CV) for length given age, (ii) use of non-informative priors for ... year class strength parameters, (iii) separate selectivity parameters used for the pre-2006 compared to ...

   Meeting Document : WG-FSA-07/53 Rev. 1 : Auteur(s): S.G. Candy and A.J. Constable (Australia)

8. Haul data analysis from the Polish krill fishery in 1997–1999

   Abstract:  The analysis of fishing data obtained from the ship’s log of the Polish commercial ... vessel M/T Pollux facilitated the characterization of catches and concentrations of krill between ... and since the vessel carried out catches along with other Polish vessels, the results describe Polish ... catches in this period and area. Each fishing season was different. In 1997 the catches were carried out ...

   Meeting Document : WG-EMM-00/17 : Auteur(s): E. Jackowksi (Poland)

9. Models of tag shedding for double tagging as a function of time at liberty and approximate solutions for the single tagging model in CASAL

   Abstract:  The model of tag shedding implicit in CASAL is that of Kirkwood and Walker (KW) (1984 ... ) which models the annual tag shedding (i.e. loss) rate as a constant for individual tags. The CASAL ... software applies this model correctly for fish released with a single tag but does not have the facility at ... present to correctly apply the KW model for fish released with two tags. The solution of Dunn et al. (2005 ...

   Meeting Document : WG-SAM-11/12 : Auteur(s): S.G. Candy (Australia)

10. INCORPORATING SAMPLING VARIATION AND RANDOM READER ERROR INTO CALCULATION OF EFFECTIVE SAMPLE SIZE IN THE APPLICATION OF AGE LENGTH KEYS TO ESTIMATION OF CATCH-AT-AGE PROPORTIONS

    observations that contribute to the objective function via a multinomial likelihood. The multinomial likelihood ... an effective sample size (ESS) that can be used as the nominal multinomial sample size. The method ... accounts for both the variation associated with sub-sampling of the random length frequency (LF) sample for ... ageing, and random reader error when ageing fish. The catch-at-age ESS is estimated by dividing the ESS ...

    Meeting Document : WG-SAM-09/08 : Auteur(s): S.G. Candy (Australia)

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