Résultats de la recherche

1. Composition and standing stock estimates of finfish from the Polarstern bottom trawl survey around Elephant Island and the South Shetland Islands (Subarea 48.1, 19 December 2006 to 3 January 2007)

   Abstract:  Germany conducted a bottom trawl survey aboard R/V ‘Polarstern’ around Elephant Island and the South Shetland Islands from 19 December 2006 to 3 January 2007. Information on species composition, biomass, and size composition of the abundant fish species was provided. Estimates of total

   Meeting Document : WG-FSA-07/22 : Auteur(s): K.-H. Kock, J. Appel, M. Busch, S. Klimpel, M. Holst, D. Pietschok (Germany), L.V. Pshenichnov (Ukraine), R. Riehl, S. Schöling (Germany)

2. Interaction of sperm whales with bottom longline and the Mammal and Bird Excluding Device (MBED) operation in the Patagonian toothfish (Dissostichus eleginoides) fishery in the southwestern Atlantic

   Abstract:  This paper describes the interaction between sperm whales (Physeter macrocephalus) and the toothfish fishery (Dissostichus eleginoides) carried out by longline fishing vessels operating in two different fishing zones at 40º and 50º latitudes in the Southwestern Atlantic from March to May

   Meeting Document : WG-FSA-07/23 : Auteur(s): O. Pin and E. Rojas (Uruguay)

3. Mercury concentrations of five species of Antarctic fish collected from CCAMLR Subareas 88.1 and 88.2

   Abstract:  The mean mercury level for the D. eleginoides 1998 sample was 0.43 mg/kg-1, which is slightly lower than the permissible level of 0.5 mg/kg-1 set by the New Zealand Food Safety Authority (NZFSA). In contrast, mean levels of mercury for D. mawsoni were 0.10 mg/kg-1 in the 1998 samples and

   Meeting Document : WG-FSA-07/24 : Auteur(s): S.M. Hanchet, D.M. Tracey, A. Dunn, P.L. Horn and N. Smith (New Zealand)

4. Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica

   Abstract:  Icefish (Channichthyidae) specimens were randomly collected by observers during the 2005–06 fishing season. These observers were placed aboard three longline vessels targeting Antarctic toothfish in the Ross Sea (Areas 88.1 and 88.2). Biological data from 303 returned specimens was

   Meeting Document : WG-FSA-07/25 : Auteur(s): C.P. Sutton, M.J. Manning, D.W. Stevens, P.M. Marriott (New Zealand)

5. Identification and speciation of Antarctic skates

   Abstract:  Two regions of mitochondrial (mt) DNA: cytochrome b and cytochrome c oxidase subunit 1(COI) were sequenced in 9 species of Bathyraja skates from the Southern Oceans and New Zealand. Based on significant sequence divergence, the species that has been referred to as Bathyraja eatonii from

   Meeting Document : WG-FSA-07/27 : Auteur(s): P.J. Smith, C.D. Roberts, A.L. Stewart, M. McVeagh and C.D. Struthers (New Zealand)

6. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2006/07

   Abstract:  The exploratory fishery for Antarctic toothfish (D. mawsoni) has been operating for ten years in Subarea 88.1 and for five years in Subarea 88.2. This report summarises the large amount of data collected on toothfish and the associated bycatch by all vessels participating in the fishery.

   Meeting Document : WG-FSA-07/28 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)

7. Preliminary assessment of the South Georgia toothfish stock, 2007

   Abstract:  1. The catch-at-length based CASAL model for toothfish at South Georgia is updated with data from the 2007 fishing season. The predicted spawning stock biomass and the yield is slightly higher than was estimated last year. 2. Improvements are made to the fit of tag data through (a)

   Meeting Document : WG-FSA-07/29 : Auteur(s): D.J. Agnew, R. Hillary and J. Pearce (United Kingdom)

8. Proposal for further trials aimed at reducing Macrourus spp. by catch on autoliners targeting D. eleginoides with longlines around South Georgia

   Abstract:  IW longlines are effective in reducing the bycatch of birds in toothfish fisheries, but by putting the line closer to the seabed they increase the bycatch of macrourids and rajids. Experiments reported elsewhere demonstrate that some of this effect can be mitigated by the use of fish

   Meeting Document : WG-FSA-07/30 : Auteur(s): Delegation of the United Kingdom

9. Proposal for trials to test modified longline gear as a means to reduce cetacean depredation and mitigate incidental bird catch

   Abstract:  The UK undertook preliminary trials of the previously described “cone” or “bottle” longline configuration for mitigating cetacean interactions in 2006. This paper should be read in conjunction with the observer’s report of that cruise (Basson 2006). Initial results were promising, and

   Meeting Document : WG-FSA-07/31 : Auteur(s): Delegation of the United Kingdom

10. Results of the tagging experiment for (D. eleginoides) in Subarea 48.4, 2007 update

    Abstract:  1. During the 2006/07 fishing season one UK and one New Zealand vessel fished in Subarea 48.4, catching 54 t of toothfish. A total of 291 D. eleginoides and 1 D. mawsoni were tagged and released during fishing operations. This represents a very high tagging rate of 5.4 fish per tonne of

    Meeting Document : WG-FSA-07/32 : Auteur(s): J. Roberts and D.J. Agnew (United Kingdom)

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