Résultats de la recherche

1. Distribution and ecology of Chaenocephalus aceratus (Channichthyidae) around South Georgia and Shag Rocks (Southern Ocean).

   Abstract:  Chaenocephalus aceratus (Family Channicthyidae) is one of the dominant species of ... demersal fish living on the South Georgia shelf where it is caught in low numbers as by-catch in the ... that growth was fast in the first five years with males and females attaining lengths at first spawning ... of 440 mm TL and 520 mm TL. The diet was comprised of fish and crustaceans, with an ontogenetic shift ...

   Meeting Document : WG-FSA-07/P5 : Auteur(s): W.D.K Reid, S. Clarke, M.A. Collins and M. Belchier. (Polar Biol., 30 (12): 1523–1533 (2007))

2. Fitting a von Bertalanffy growth model to length-at-age data accounting for length-dependent fishing selectivity and length-stratified sub-sampling of length frequency samples

   Abstract:  Response-biased sampling in the context of regression modelling occurs when sample ... units are selected with a probability that is a function of the response. In sampling to obtain fish to ... process involving a particular gear, and (ii) the method of on-deck sub-sampling fish for ageing from the ... random length frequency sample. When the selectivity of the gear combined with availability of fish to be ...

   Meeting Document : WG-FSA-SAM-05/13 : Auteur(s): S.G. Candy (Australia)

3. Re-organisation of WG-FSA Report

   restructure the WG-FSA report. In early 2004, the extend and nature of the work required was developed in ... Abstract:  In 2003, WG-FSA and the Scientific Committee identified the need to rewrite and ... consultation between the Conveners of WG-FSA and WG-IMAF, and the Chair of the Scientific Committee ... Everson to develop certain elements of the restructure (see SC CIRC 04/11 and 04/16). Dr Everson’s first ...

   Meeting Document : WG-FSA-SAM-04/06 : Auteur(s): CCAMLR Secretariat

4. Acoustic discrimination of southern ocean zooplankton

   Abstract:  Acoustic surveys in the vicinity of the sub-Antarctic island of South Georgia revealed ... the existence of a number of horizontally extensive yet vertically discrete scattering layers in the ... upper 250 m of the water column. These layers were fished with a LonghurstHardy plankton recorder (LHPR ... each scattering layer was composed predominantly of a single species of either the euphausiids ...

   Meeting Document : WG-EMM-97/54 : Auteur(s): Watkins, J.L., Brierley, A.S., Goss, C., Ward, P.

5. Review of biological parameters for Ross Sea skates

   . Differences in length-weight relationships among regions raise doubt about the conspecificity of A. georgiana ... (TL). The length at maturity of females is not well determined but is probably in the range 95–100 cm ... both sexes combined is: TLt = 101.3(1? e?0.308[t+1.30]). The best estimate of longevity in A. georgiana ... Abstract:  Biological parameters were reviewed and updated for the two main species of skates ...

   Meeting Document : WG-FSA-06/31 : Auteur(s): M.P. Francis (New Zealand)

6. Southern royal albatross Diomedea epomophora census on Campbell Island, 4 January–6 February 1996, and a review of population figures

   variability in counting effort between years. Nevertheless, numbers of nests have increased since the first ... the period 4 January to 6 February 1996 of the 1995-96 breeding season. A total of 7787 occupied nests ... was counted. Comparisons of different field census techniques and a measure of the rate of egg loss ... suggest that 8200-8600 pairs were nesting in the 1995-96 breeding season. The count WDS 23% higher than in ...

   Meeting Document : SC-CAMLR-XVII/BG/13 : Auteur(s): Delegation of New Zealand

7. Age and growth of spiny icefish (Chaenodraco wilsoni Regan, 1914) off Joinville–D’Urville Islands (Antarctic Peninsula)

   in moulds. The precision of age estimates between readings was tested applying both the average ... , although it had a much shorter life span. The part of the population of C. wilsoni caught in the study area ... Islands (Antarctic Peninsula) in February–March 2006 and January 2007. A total of 218 specimens were ... selected for the study, consisting of 120 females and 98 males. The age of fish was estimated by counting ... obtained by grinding and polishing whole otoliths embedded in epoxy resin in moulds. The precision of age ... population of C. wilsoni caught in the study area consisted mainly of adult individuals between 1 and 3 ... Antarctic Peninsula (CCAMLR Statistical Subarea 48.1) in the western Atlantic Ocean sector of the Southern ... subsequently as a baseline study for further monitoring of the devel- opment of fish stocks in the area (Jones ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 115–130 : Auteur(s): La Mesa, M., A. De Felice, C.D. Jones, K.-H. Kock

8. A review and preliminary analysis of CEMP data

   Abstract:  A review of the data in the CEMP database revealed minor inconsistencies that have now ... could be the cause. An examination of migration patterns in the Peninsula region would make show the ... . Other problems were detected, such as the use of old forms and Standard Methods, and the increasing ... amount of automated data being collected and submitted. Members should ensure that they use the most ...

   Meeting Document : WG-EMM-02/7 : Auteur(s): Secretariat

9. Estimation of total removals (green weight)

   Abstract:  Through an in-depth discussion at the WG-EMM regarding green-weight estimation in the ... krill fishery, the Working Group recognised importance of obtaining detailed information on the methods ... by which green weight is estimated. The Report of WG-EMM included an appendix that describes this ... issue in detail and identifies a process by which the required information and data could be acquired ...

   Meeting Document : SC-CAMLR-XXXI/BG/15 : Auteur(s): Co-conveners of the Working Group on Ecosystem Monitoring and Management

10. Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)

    (Dissostichus eleginoides) caught in the commercial fishery within Subarea 48.3. The results for 1996 indicate ... that L m50 occurs at 78.5 cm total length for male and 98.2 cm for female fish. In 1997 the results for ... male fish were essentially the same. For female fish there is evidence that in 1997 a significant ... bias leading to the overestimation L m50 of  calculated by conventional methods. Further analysis ... the same. For female fish there is evidence that in 1997 a significant proportion, 25 to 43%, of ... that Lm50 for female fish in 1997 was no different to that for 1996. The implications of this ... leading to an enlarged ovary of about 20% of the fish total mass. Spawning occurs in the period July to ... of this analysis. The data used in this analysis were total length, sex and maturity stage ...

    Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Auteur(s): Everson, I. and A.W. Murray

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