Résultats de la recherche

1. A single-area stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the 2004/05 season

   model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... ). A range of model sensitivities were examined, with the base case assuming the Ross Sea fishery as a ... , slope, and north). Model fits to the data were adequate, with the tag-release and recapture data ... providing the most information on stock size. Monte-Carlo Markov Chain (MCMC) diagnostics suggested some ...

   Meeting Document : WG-FSA-05/33 : Auteur(s): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)

2. The rate of incidental mortality of birds in the IUU longline fishery in Subarea 48.3

   Abstract:  Information on the rates of incidental mortality of birds experienced by IUU vessels is ... extremely difficult to obtain. CCAMLR has, in the past, used data from the 1997 legitimate fishery, when a ... large number of birds were caught and when the implementation of mitigation measures was low, to ... approximate the IUU situation. This paper describes analyses undertaken using the 1997 data to refine the ...

   Meeting Document : WG-FSA-02/5 : Auteur(s): D.J. Agnew and G.P. Kirkwood (United Kingdom)

3. The diet of toothfish species Dissostichus eleginoides Smitt and D. mawsoni Norman with overlapping distributions around the South Sandwich Islands, Southern Ocean

   Abstract:  The diet of Antarctic toothfish (Dissostichus mawsoni) and Patagonian toothfish (D ... . eleginoides) was examined around the south sandwich islands in the southern ocean, one of few regions with ... overlapping populations of the two species. Despite large differences in the proportion of stomachs containing ... muraenolepidids) and cephalopods (mainly Kondakovia longimana) comprising more than 90 % of the prey mass of both ...

   Meeting Document : WG-FSA-11/P03 : Auteur(s): J. Roberts, J. Xavier and D. J. Agnew

4. CPUES and body length of Antarctic krill during 1993/94 season in the fishing grounds around the South Shetland Islands

   . Main fishing grounds were persistently formed in the north of Livingston Island throughout the season ... , and the west of Elephant Island from April to May. CPUEs showed the highest values at the height of ... summer (early February- early March) in the north of Livingston Island, and April at the west of Elephant ... Island. Krill with a modal length of 41-45mm were dominant in catches, almost same as the previous season ...

   Meeting Document : WG-EMM-95/51 : Auteur(s): Kawaguchi, S., Ichii, T., Naganobu, M.

5. Use of current velocity data from fram to investigate the large scale transport of krill in the Scotia Sea

   Abstract:  Current velocity data from a single time realisation of the FRAM model are presented ... for particular areas of the Scotia Sea. The regions are based on the CCAMLR sub-areas and also include ... boundaries over the upper 250m of the water column. These have been combined with estimates of krill density ... and standing stocks to consider the large scale flux of krill through the regions and estimate ...

   Meeting Document : WS-Flux-94/05 : Auteur(s): E.J. Murphy (United Kingdom)

6. Assessment of fishable krill biomass on the basis of the acoustic surveys results using geostatistical methods

   Abstract:  ABSTRACT Applicability of geostatistical methods in processing the acoustic fields of ... krill density based on the acoustic survey data is demonstrated. The results obtained indicate ... usefulness of these methods in studying the structure of krill density field for biomass assessment in ... compliance with different thresholds of their fishery importance. The structure of krill density field in ...

   Meeting Document : WG-SAM-10/07 Rev. 1 : Auteur(s): S.M. Kasatkina and P.S. Gasyukov (Russia)

7. 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 ... (Dissostichus mawsoni; ‘toothfish’) in the Ross Sea may affect the ecological viability of top predators such as ... the assumptions underlying application of stable isotope methodology to Weddell seals, and estimate ... the potential contribution of toothfish to the diet of Weddell seals using an isotope mixing model ...

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

8. Quantifying the impacts of ice on demersal longlining in CCAMLR Subarea 88.1 with updated information on the 2014/15 season

   Abstract:  The effect of sea ice is acknowledged as a major influence on fishing operations in ... fisheries research and management. A retrospective analysis over a 15 year period up to the 2013/14 season ... was presented in WG-FSA-14/55 to quantify the level of impact that ice conditions have on fishing by ... creating an annual fishability index. We update the analysis for the 2015 season, a challenging ice year ...

   Meeting Document : WG-FSA-15/35 : Auteur(s): J.M. Fenaughty and S.J. Parker (New Zealand)

9. Descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 & 88.2 for the years 2000–01 to 2014–15

   Abstract:  We provide an update of the descriptive analyses of the toothfish tagging programme in ... Subareas 88.1 and 88.2 through the 2015 season. A total of 44 827 Antarctic toothfish have been released ... years, most vessels have achieved or exceeded the required tagging rate of one toothfish per tonne of ... catch in the Ross Sea region. Tag recapture data showed that most fish are recaptured only a short ...

   Meeting Document : WG-FSA-15/37 : Auteur(s): S.J. Parker and S. Mormede (New Zealand)

10. A RE-ANALYSIS AND UPDATE OF THE ANTARCTIC KRILL BIOMASS IN THE SOUTH SHETLAND ISLANDS, THROUGH 2011

    -based estimates of krill density and recruitment are recalculated for the years 1996 through 2011 ... . Recent changes in the acoustic methodology and target strength models are the basis for the recalculation ... . The time series of acoustic biomass indicate that krill have varied by more than an order of magnitude ... over this time period. Current estimates for the South Shetland Islands region are 3.6, 1.9 and 1.35 ...

    Meeting Document : WG-EMM-11/26 : Auteur(s): A. Cossio, C. Reiss and R. Driscoll (USA)

Pages