Résultats de la recherche

1. A preliminary model-based approach for estimating natural mortality of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region

   constant across age and sex. In 2018, the independent review of the Ross Sea region D. mawsoni stock ... region stock assessment for Antarctic toothfish (Dissostichus mawsoni), M is assumed to be 0.13 y-1 and ... single value for males and females combined, with a uniform prior within the base model used in 2017 for ... simulations suggested that when the rate of natural mortality was assumed in an operating model, it was ...

   Meeting Document : WG-SAM-2019/04 : Auteur(s): B. Moore, S. Mormede, S. Parker and A. Dunn

2. Fishery Report: Closed fishery for Dissostichus spp. (TOT) in Divisions 58.4.4a and 58.4.4b

   no evidence of IUU fishing in 2004, 2008 and 2009. The estimated IUU catch for 2010 was 80 tonnes ... may be overestimated by one year due to an interpretation issue concerning the location of the first ... . Ecosystem implications/effects 20. No evaluation available for this fishery. TOT 58.4.4 8 8 ... sampled) ranged from 4 to 48 years for females and from 5 to 48 years for males (Figure 3). These ages ...

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3. Fishery Report: Closed fishery for Dissostichus spp. in Divisions 58.4.4a and 58.4.4b

   for 2009/10 was 80 tonnes in Division 58.4.4a. 1.3 Size distribution of catches 6. Most D ... year due to an interpretation issue concerning the location of the first annulus. 3.2 Fixed ... management advice 8.1 Conservation measures 20. The exploratory fishery for Dissostichus spp. in ... (legal and IUU) and assumed the biomass in 2010 to be 20% of B0. An estimate of B0 was then calculated ...

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4. Line weights of constant mass (and sink rates) for Spanish system Patagonian toothfish longline vessels

   shaped steel weights weighing 5 kg would be an appropriate substitute for 8.5 kg rock weights ... Paper Title:  Line weights of constant mass (and sink rates) for Spanish system Patagonian ... hydrodynamically shaped (e.g. torpedo-shaped) steel weights, which are smaller for equivalent weight, and require ... no maintenance. An experiment was conducted on a Spanish-system longline vessel to determine the ... , which are smaller for equivalent weight, and require no maintenance. An experiment was conducted on a ... free-falls in the water column, and the latter pro- vides an estimate of sink rates in the linear ... ) was higher, suggesting that 5 kg steel weights would be an appropriate substitute for 8.5 kg rock ... the linear phases of sink profiles taken 20 s after deployment and are de- rived for a water depth of ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 93–106 : Auteur(s): Robertson, G., C.A. Moreno, E. Gutiérrez, S.G. Candy, E.F. Melvin and J.P. Seco Pon

5. Are krill recruitment indices from meso-scale survey representative for larger areas?

   for age-one-old krill between scientific surveys from the northern Bellingshausen Sea, the Elephant ... ) and two-year old (R2) krill differ substantially between years. However, results were in conformity ... classes of the age-one-group which occur in the samples of some years. Author(s):  V. Siegel (Germany ... surveys are representative for a wider region Generally the proportional recruitment indices for one (R1 ...

   Meeting Document : WG-EMM-02/20 : Auteur(s): V. Siegel (Germany), R.M. Ross and L.B. Quetin (USA)

6. Fishery Report 2013: Exploratory fishery for Dissostichus spp. in South Sandwich Islands (Subarea 48.4)

   Description / Abstract:  Fishery Report 2013: Exploratory fishery for Dissostichus spp. in South ... assessed using an age-structured CASAL integrated stock assessment model for both sexes combined with ages ... 1 December 2012 to 30 November 2013). FISHERY REPORT 2013: EXPLORATORY FISHERY FOR ... framework for designing and undertaking research fishing designed to lead to an assessment of these ... development phase, with a set of decisions and review for the progression between stages. Biological data ...

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7. CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass

   possible utility for evaluation of relative changes in krill biomass Abstract / Description:  Key catch-per ... and primary data for their calculations, were examined. The main CPUE indices were catch per vessel ... fluctuations in haul duration due to the different fishing strategies used when targeting krill intended for ... calculated for specific strategies were well correlated. Depending on the fishing strategy used, the number ... 0 2 4 6 8 10 12 14 16 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Catch per vessel ... 1986 to 1991 (RIF statistics). 0 5 10 15 20 25 30 35 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ... 2 20 8 0. 19 80 25 0. 60 15 68 51 2 0. 81 15 76 0. 73 81 57 84 0. 88 91 ... 98 8 0. 17 67 14 40 5 0. 30 36 4 0. 17 13 11 14 1 0. 86 45 75 0. 55 80 36 ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Auteur(s): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov

8. Downward adjustments to local catch limits for the krill fishery in Subarea 48.1

   strength and observations on breeding phenology for Adélie, chinstrap, and gentoo penguins.  Mean age at ... Abstract:  Here we compile four vignettes that, together, provide the basis for making downward ... adjustments to local catch limits for the krill fishery in Subarea 48.1.  We use the term local catch limit to ... adjustments to local catch limits as one component of a larger strategy for feedback management (FBM) of the ...

   Meeting Document : WG-EMM-16/46 : Auteur(s): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries

9. Proposal for a longline survey on toothfish in Statistical Subarea 48.6 in 2017/18

   . This initial year will be used for exploration with particular emphasis on tagging efforts and habitat ... that in 2018 a new Norwegian vessel will be available, equipped with advanced technology for sampling ... contacted and discussions have started on collaboration from the 2018/19 fishing season. The expectation is ... and observation. The proposed research is pertinent to issues raised by the Scientific Committee (SC ...

   Meeting Document : WG-SAM-17/06 : Auteur(s): Delegation of Norway

10. Fishery Report 2013: Exploratory fishery for Dissostichus spp. in Division 58.4.2

    Description / Abstract:  Fishery Report 2013: Exploratory fishery for Dissostichus spp. in ... 30 November 2013). FISHERY REPORT 2013: EXPLORATORY FISHERY FOR DISSOSTICHUS SPP. IN ... Ocean sector of the Convention Area remains an issue for the Commission. Estimates of illegal fishing ... , biomass estimation phase and assessment development phase, with a set of decisions and review for the ... and maturity stage, as well as collection of otoliths for age determination of the target and most ...

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