Résultats de la recherche
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Diets of Antarctic toothfish estimated from fatty acids and stable isotopes
Antarctic toothfish, by-catch and their stomach contents were collected for the past five years in the eight ... recently developed mixing model calculation for FA profiles and SI values, which follows the Bayesian ... whole population level. In contrast, the model calculations provided an estimation of dietary shift ... . Author(s): C.-K. Kang, S.-G. Choi, J. Lee, J. Lee and D. An Title: Diets of Antarctic toothfish ...
Meeting Document : WG-FSA-17/12 : Auteur(s): C.-K. Kang, S.-G. Choi, J. Lee, J. Lee and D. An
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Assessment of the Patagonian Toothfish (D. eleginoides) in Subarea 48.3
35 years with 50% probability, with less than 1% probability declining below 20% of B0 and would ... . The 2008 year class is estimated to be well above average. Provisional projections indicate that a ... the current status of the stock is at 52% of B0. Spawning biomass has been increasing in recent years ...
Meeting Document : WG-FSA-15/59 : Auteur(s): T. Earl, M. Soeffker and C. Darby (United Kingdom)
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Modelling availability bias using existing time series count data: Adélie penguins as a case study
date-specific factor (termed the availability fraction) if the count is to form the basis of an ... through December. Implications for the planning of future regional scale surveys of land-based predators ... . A count of some attribute of the population on any date may therefore need to be adjusted by some ... of sites and years around Antarctica were modelled using quantile regression to estimate the range of ...
Meeting Document : WG-EMM-04/54 : Auteur(s): L. Emmerson, B. Raymond and C. Southwell (Australia)
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The Status of the Champsocephalus gunnari Stock in the South Georgia Area
the relationship between the spawning stock and number of recruits. A conventional VPA and an ad hoc ... tuning method are used to estimate biomass levels and fishing mortality for the period 1971/72 to 1988/89 ... Abstract: This study focuses on the Chamsocephahus gunnari stock around South Georgia. The ... observed in recent years cannot be sustained. There is no clear relationship between the size of the ...
Meeting Document : WG-FSA-89/8 Rev. 1 : Auteur(s): M. Basson, J. Beddington (United Kingdom) and W. Ślósarczyk (Poland)
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Population trends of albatrosses and petrels at sub-Antarctic Marion Island
Unreported (IUU) longline fishing for Patagonian toothfish (Dissostichus eleginoides) close to Marion Island ... and an effective means of dealing with IUU longline fishing seem necessary to reduce the potential ... Abstract: We report on the population changes of five species of Procellariiform seabirds ... the last 16-18 years. All were stable or decreasing during the 1980s, followed by a recovery period ...
Meeting Document : WG-FSA-01/11 : Auteur(s): D.C. Nel, P.G. Ryan, R.J.M. Crawford, J. Cooper and O. Huyser (South Africa)
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REPORT OF THE UK GROUNDFISH SURVEY AT SOUTH GEORGIA (CCAMLR SUB-AREA 48.3) IN JANUARY 2009
FV Sil. A total of 71 random and representative 30 min tows were made giving good geographic coverage ... , updated sea-floor areas and adjusting for the low headline height of the trawl (see CCAMLR WG-FSA (2003 ... for other non-target species. There was evidence that the large cohort of juvenile Patagonian ... toothfish (Dissostichus eleginoides) observed an all surveys since 2003 had moved into deepwater and was no ...
Meeting Document : WG-FSA-09/09 : Auteur(s): M. Belchier, R.E. Mitchell, M.A. Collins, L. Kenny, M. Taylor, J. Nelson and L. Featherstone (United Kingdom)
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A preliminary examination of the length–weight relationship in Dissostichus eleginoides and D. mawsoni using data from the CCAMLR Scheme of Scientific Observation
Abstract: An investigation into use the length-weight relationship of Dissostichus eleginoides ... and D. mawsoni to separate the two species was undertaken using data from the CCAMLR Scheme of ... Scientific Observation. Although the ability to discriminate the two species using length and weight ... measurement was inconclusive the process provided an opportunity to examine the variation in biometrics of ...
Meeting Document : WG-FSA-11/21 : Auteur(s): Secretariat
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Estimating toothfish biomass in Subarea 48.3 using local depletions
out some possibility of potential as an alternative assessment method for toothfish. Author(s ... CPUE over the four years and multiplying by the total fishable area in Subarea 48.3 we arrived at an ... of 12’ by 12’ where there had been forty or more hauls in any particular year. There were 62 ... means of estimating toothfish density at South Georgia. Over the four years 2000-2003, we found 25 areas ...
Meeting Document : WG-FSA-SAM-04/18 : Auteur(s): Pearce, J., Agnew, D.
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Fishery Report 2013: Dissostichus eleginoides Crozet Island inside the French EEZ (Subarea 58.6)
and peaked the following year at an estimated 11 760 tonnes. 10. Estimates of IUU catch in Subarea ... (Divisions 58.5.1 and 58.5.2). Parameter estimates 20. There are no specific life-history parameters for ... research in the CAMLR Convention Area’ apply to this fishery. There is an exemption to the requirement for ... ) monitoring of two boats responsible for the majority of the bird by-catch, including the use of spatial ...
Document : Site Section: Publications
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Fishery Report 2014: Dissostichus eleginoides Kerguelen Islands French EEZ (Division 58.5.1)
of two P. aequinoctialis (Table 4). 30. The level of risk of incidental mortality of seabirds in ... APPENDIX O Commission for the Conservation ... depths’ for Dissostichus spp.) are shaded. Throughout this report the CCAMLR fishing season is ... represented by the year in which that season ended, e.g. 2014 represents the 2013/14 CCAMLR fishing season ...
Document : Site Section: Publications