Résultats de la recherche

1. Uncertainty in reported geographical distribution and weight of krill catches from Norwegian krill fishing vessels operating continuous fishing systems

   of actions that would facilitate further consideration and clarification of these technical issues ... the outcome of the action steps including onboard experiments and analyses of historical catch data ... . Experiments on board ‘Saga Sea’ showed that there is an average delay of approximately 9 minutes between the ... relative standard deviation of 8-29% should be expected depending on vessel and specific holding tank ...

   Meeting Document : WG-EMM-18/22 : Auteur(s): G. Skaret, T. Knutsen, F. Grebstad and O.A. Bergstad

2. Stomach contents of sub-adult Antarctic toothfish (Dissostichus mawsoni) from the western Ross Sea, Antarctica

   Abstract:  The stomach contents of 190 sub-adult (51-100 cm TL) Antarctic toothfish (Dissostichus ... primarily piscivorous, feeding on a wide variety of small to medium sized fish. Icefish (Channichthyidae ... (Muraenolepididae) were also important. Glacial squid (Psychroteuthis glacialis) were found in about 20% of stomachs ... of the Ross Sea. Although the study provides an important comparison of diet of adult and sub-adult ...

   Meeting Document : WG-FSA-06/27 : Auteur(s): D.W. Stevens (New Zealand)

3. Report of the South Georgia groundfish survey (Subarea 48.3) in January 2006

   the FPRV Dorada. Sixty-three random trawls were undertaken, with 12.3 tonnes of mackerel icesfish ... caught, which produced biomass estimates of between 91000 and 117000 tonnes. The catches were dominated ... by fish of 20-25 cm (putative 2+), but unusually large numbers of fish of ~ 50 cm were also caught to ... the N and NE of South Georgia. Fish in spawning condition (Stage IV) were found at the eastern end of ...

   Meeting Document : WG-FSA-06/51 : Auteur(s): M.A. Collins, C. Jones, J. Clark. S. Fielding, J. Slakowski, T. North, W. Reid and J. Watts (United Kingdom)

4. Counts of surface-nesting seabirds breeding at Prince Edward Island, summer 2001/02

   Abstract:  The first midsummer survey of surface-nesting seabirds at Prince Edward Island was ... concerns about the impacts of longline fishing mortality on various albatrosses and giant petrels, there ... was no evidence that populations of these species had decreased. Indeed, the estimate of wandering ... Marion Island as supporting the largest single-island populations of this species. Species that underwent ...

   Meeting Document : WG-EMM-03/9 : Auteur(s): P.G. Ryan, J. Cooper, B.M. Dyer, L.G. Underhill,R.J.M. Crawford and M.N Bester (South Africa)

5. On the problem of fish tagging

   Abstract:  Data on bottom trawl catch of tagged fish are presented as well as results of tagging ... of some Antarctic fish in Subarea 88.1. Use of marked trawl hooks as an additional method of fish ... tagging is proposed for discussion. Author(s):  V.G. Prutko (Ukraine) Title:  On the problem of fish ...

   Meeting Document : WG-FSA-03/50 : Auteur(s): V.G. Prutko (Ukraine)

6. THE ISSUE OF NON-COMPLIANCE WITH CCAMLR TAGGING PROGRAM

   Exploratory Fisheries), the flag States of fishing vessels participating in exploratory fisheries are ... responsible for ensuring the tagging of Dissostichus spp., tag recovery and correct reporting. At CCAMLR XXVI ... assessment of compliance with the CCAMLR tagging program based on information contained in the Fish Stock ... Assessment Report 2007 and discovered a high level of non-compliance. The lack of reliable information can ...

   Meeting Document : CCAMLR-XXVII/BG/22 : Auteur(s): Delegation of Australia

7. A REVIEW OF THE UNCERTAINTIES ASSOCIATED WITH PENGUIN POPULATION AND ABUNDANCE ESTIMATES FOR THE CCAMLR REGION

   Abstract:  This report reviews the availability of data describing penguin abundance in the CCAMLR ... Convention area, and the uncertainties in deriving overall abundance estimates from these counts. Counts of ... breeding colonies are available from a variety of sources and, when combined, coverage is thought to be ... been collected using various demographic units, and the timing of these have varied relative to ...

   Meeting Document : CCAMLR-IWC-WS-08/08 : Auteur(s): Trivelpiece, W., Fraser, B., Trathan, P., Ainley, D., Southwell, C., Bost, C., Hindell, M., Lyver, P., Ratcliffe, N., Woehler, E.

8. Effects of sea-ice extent and krill or salp dominance on the Antarctic food web

   important during spring and summer through the formation of extensive and dense blooms. Although salps are ... reproduction and survival of krill larvae. Here we provide data from 1995 and 1996 that support hypothesized ... proportion of net primary production, and found correlations between herbivore densities and integrated ... chlorophyll-a that indicate that there is a degree of competition between krill and salps. Our analysis of the ...

   Meeting Document : WG-EMM-97/73 : Auteur(s): Hewitt, R., Trivelpiece, S., Fraser, W., Holm-Hansen, O., Siegel, V., Trivelpiece, W., Loeb, V.

9. Fishes incidentally caught by Japanese Antarctic krill commercial fishery to the north of the South Shetland Islands in February 1997

   Niitaka Maru were made from 1 to 23 February, 1997 to the north of the South Shetland Islands. Among 80 ... hauls examined, a total of 61 specimens belonging to 4 families and 7 species, Electrona antarctica (50 ... hauls. Except for one channichthyid juvenile of Neopagetopsis ionah, by-catch fishes were referred to ... , Electrona antarctica of the Myctophidae was the most abundant. This species was found in 12 hauls, and its ...

   Meeting Document : WG-EMM-97/72 : Auteur(s): Iwami, T., Ichii, T., Naganobu, M., Kawaguchi, S.

10. On the consequences of differentiating between adult and sub-adult survival rates in the krill-predators model

    growth rates, thus solving problems of lack of self-sustainability encountered in earlier model analyses ... split of the overall density dependence effect between the first year and following sub-adult years of ... life. Since evaluations of the level of resilience of a predator to krill fishing depend on the values ... annual population growth rate of 10%. Author(s):  Butterworth, D.S., Thomson, R.B. Title:  On the ...

    Meeting Document : WG-EMM-95/39 : Auteur(s): Butterworth, D.S., Thomson, R.B.

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