Résultats de la recherche

1. Age determination of the Antarctic fishes Champsocephalus gunnari and Notothenia rossii from South Georgia

   periodicity in Antarctic hydrographic conditions, age determination of Antarctic fish has proven to be ... a fish's past history. As part of an effort to study Antarctic fish growth and population ... . Multivariate mathematical models relating age to otolith morphometrics and fish size demonstrated that age ... could be reliably determined from body measurements and otolith measurements. These techniques allowed ...

   Meeting Document : SC-CAMLR-VI/BG/43 : Auteur(s): R. Radtke (USA)

2. Progress on the application of an age-structured production model fitted to commercial catch-rate and catch-at-length data to assess the toothfish (Dissostichus eleginoides) resource in the Prince Edward Island vicinity

   particular, to accommodate the view of the August 2003 meeting of the Subgroup on assessment methods that 0.2 ... stock status that can be argued from these analyses, it is suggested that annual catch levels should not ... allow the estimation of a selectivity-at-age function that decreases at larger ages. This is, in ... yr-1 is likely the largest value of natural mortality M that is plausible for toothfish. Catch, catch ...

   Meeting Document : WG-FSA-03/97 : Auteur(s): A. Brandão and D.S. Butterworth (South Africa)

3. Preliminary standardised CPUE analysis of the New Zealand part of the toothfish fishery in CCAMLR Subarea 88.1, from 1988/89 to 2002/03

   models may be influenced by extreme values of soaktime, depth and length of line set, that reflect the ... the main grounds and vessels analysis to include the 2003 season. Seasonal indices were variable with ... has extended to other grounds since 2001, a further sensitivity analysis was completed for the two ... confined to the two vessels with a consistent fishing history, and as such only represents a small area of ...

   Meeting Document : WG-FSA-03/43 : Auteur(s): R.G. Blackwell and S.M. Hanchet (New Zealand)

4. Larval development and spawning ecology of euphausiids in the Ross Sea and its adjacent waters in 2004/05

   juvenile or adult stages. Eggs and larvae of E. superba occurred with gravid females along the slope, but ... no juveniles occurred concurrently. Thus the slope does not appear to be a nursery ground for this ... surface layers from furcilia I onward. The onset of recruitment to calyptopis I appeared to be earlier in ... the more northern species with the exception of E. crystallorophias, which recruited before E. superba ...

   Meeting Document : WG-EMM-10/P06 : Auteur(s): K. Taki, T. Yabuki, Y. Noiri, T. Hayashi and M. Naganobu

5. An update on the ageing of Antarctic toothfish, Dissostichus mawsoni, from East Antarctica and the Amundsen Sea

   Zealand reference collection for Antarctic toothfish, with all pairwise comparisons between readers and ... high (all IAPE < 2%, CV < 3%), confirming that a similar level of detail is revealed by each ... preparation method. Therefore, either method can be used to provide reliable age estimates for Antarctic ... using thin sections (IAPE = 2.88, CV = 4.07).  The age estimates provided by this study will be ...

   Meeting Document : WG-FSA-17/15 : Auteur(s): G. Nowara, B. Farmer, T. Barnes, P. Ziegler and D. Welsford

6. Estimating nest-level phenology and reproductive success of colonial seabirds using time-lapse cameras

   be estimated. Author(s):  J.T. Hinke, A. Barbosa, L.M. Emmerson, T. Hart, M.A Juáres, M. Korczak ... reproductive success is important for seabird conservation and management, but can be logistically challenging ... dates that switch from two adults to one, and selecting the date when the first derivative of the spline ... . The method was validated with concurrent direct observations for each species and then applied to a ...

   Meeting Document : WG-EMM-18/P01 : Auteur(s): J.T. Hinke, A. Barbosa, L.M. Emmerson, T. Hart, M.A Juáres, M. Korczak-Abshire, G. Milinevsky, M. Santos, P.N. Trathan, G.M. Watters and C. Southwell

7. The annual random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the Heard Island region (Division 58.5.2) for 2012

   skates was also taken in 2012. The catch of invertebrates in the 2012 survey, 4 t, was about half that of ... for coral, with a reported catch of 0.6 t, being significantly greater than the long term average (50 ... RSTS were generally high in comparison with previous years, with the total fish catch being twice as ... kg). A possible explanation for the generally lower catches is that the smaller mesh codend liner was ...

   Meeting Document : WG-FSA-12/25 : Auteur(s): G.B. Nowara and T. Lamb (Australia)

8. Cameras installation by Ukraine at the Galindez, Petermann and Yalour Islands penguin colonies – CEMP Fund project ‘Establishing a CEMP Camera Network in Subarea 48.1’

   activity and for monitoring that can assist with camera data validation. Winteres will fullfill the ... part of the CEMP project run by USA, Argentina, Poland and Ukraine &#039;Establishing a CEMP Camera ... Network in Subarea 48.1&#039;. Work has been provided under support of the National Antarctic Scientific ... Center of Ukraine that is operating Vernadsky Station. In season 2015/2016 we installed nine cameras at ...

   Meeting Document : SC-CAMLR-XXXV/BG/27 : Auteur(s): Delegation of Ukraine

9. Report on incidental bird mortality and effectiveness of mitigation measures during demersal long lining by Ihn Sung 66 in Subarea 48.3 - December 1993 to February 1994

   with the &#039;Spanish&#039; method of longlining (separate hauling and fishing lines) is described ... the Korean longliner lhn Sung 66 are presented. Preliminary findings suggest that the phase of ...

   Meeting Document : WG-IMALF-94/14 : Auteur(s): C. Jones and G. Parkes (United Kingdom)

10. Preliminary results of stock estimation for D. mawsoni using CASAL in the research block 48.6_2

    . The model assumes that single sex and age structured model without considering IUU. Tag release data ... B0, B2016, and current vulnerable biomass are estimated to be 17718.8, 17007.3, and 6986.2 tonnes ... . The MCMC estimates of B0 (18143.15t) and current biomass (17431.60 t) are much higher than the latest ... biomass estimates by CPUE-by-seabed method (3029 t) and Chapman method (4223 t). CCAMLR decision rule risk ...

    Meeting Document : WG-FSA-18/72 : Auteur(s): T. Okuda

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