Résultats de la recherche

1. A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997/98 TO 2008/09

   Abstract:  The exploratory fishery for Dissostichus spp. has now been operating for 13 years in ... Subarea 88.1 and for 8 years in Subarea 88.2. During that time a large amount of distributional and ... distribution of sea-ice, the SSRU catch and bycatch limits, and an increase in knowledge of the various grounds ... overall length frequency distribution, and no evidence for a reduction in fish length in any SSRU over ...

   Meeting Document : WG-FSA-09/36 : Auteur(s): S.M. Hanchet, A. Dunn and S. Mormede (New Zealand)

2. Defining predator foraging ranges, illustrated using Adélie penguin foraging tracks from Mawson coast

   addressed in answering that question. The proposed method for defining foraging ranges is based on an ... effort and this is used to delineate a feeding ground for Adélie penguins on the Mawson coast in eastern ... Antarctica. This method builds on existing methods but incorporates tools for pooling information across ... likely to be foraged by predators from one year to the next, i.e. what is a predator’s feeding range ...

   Meeting Document : WG-EMM-02/41 : Auteur(s): I.R. Ball, A.J. Constable, J. Clarke and L. Emmerson (Australia)

3. Krill catch distribution in relation to predator colonies 1987 to 1992

   is similar to that seen for other years, with 70% of the total catch from Subarea 48.1 being taken ... , calculated from CCAMLR fine-scale data, is shown for Subareas 48.1 and 48.2. The pattern of catches in 1992 ... -distance’). Although data reporting was not complete for Subarea 48.2 in 1992, it was estimated that 38% of ... the total exploitation of krill in these two subareas respectively. Author(s):  Secretariat Title ...

   Meeting Document : WG-KRILL-93/10 : Auteur(s): Secretariat

4. ECOLOGICAL REPERCUSSIONS OF HISTORICAL FISH EXTRACTION FROM THE SOUTHERN OCEAN

   stocks were on average reduced to <50%, and finally (mid-1980s) to <20%, of original size. Despite ... strong year classes, as is true of such fish elsewhere. A climate regime, the Southern Annular Mode, once ... oscillated between two states, but has remained in its “positive mode” since the time of the fish extraction ... South Shetland islands, where fishing was concentrated — declined simultaneously during the two periods ...

   Meeting Document : WG-EMM-08/P07 : Auteur(s): D. Ainley and L. Blight

5. Fishery Report 2013: Dissostichus eleginoides South Georgia (Subarea 48.3)

   for the past two seasons (2012 and 2013) for Management Areas A, B and C (see Figure 1) were set at 0 ... , 780 and 1 820 tonnes respectively, with an overall catch limit for Subarea 48.3 of 2 600 tonnes. 4 ... captured. Numbers and lengths of D. eleginoides provide an index of recruitment for stock assessments ... conversion factors, length frequencies, weights and maturity. Otoliths are collected by observers for an ...

   Document : Site Section: Publications

6. The spawning dynamics of Patagonian toothfish in the Australian EEZ at Heard Island and the McDonald Islands and their importance to spawning activity across the Kerguelen Plateau

     ‘mature’, offset by two years to account for the duration of the maturation process, provided more ... available for 12 563 individuals. The histology of male and female gonads was also analysed from specimens ... animals, and that even large mature fish may not spawn every year. As a result, the conventional method of ... realistic estimates. The revised ogives were shown to have a significant impact on the estimates of stock ...

   Meeting Document : WG-FSA-12/P08 : Auteur(s): D.C. Welsford, J. McIvor, S.G. Candy and G.B. Nowara

7. Fishery Report 2017: Dissostichus eleginoides Heard Island Australian EEZ (Division 58.5.2)

   rate of ~20 mm per year, and a maximum age >20 years for B. eatonii, estimated from tag returns ... effort amongst strata was revised in 2003, with an identical survey design for the years 2001–2002 ... fish were measured (N) and the number of fish measured (n) in each year are provided (Note: data for ... for 2017 are incomplete). 15. The majority of D. eleginoides caught by trawl measured between 30 ...

   Document : Site Section: Publications

8. Fishery Report: Champsocephalus gunnari (ANI) Heard Island (Division 58.5.2)

   Increments in year 365 Years to project stock in simulation 2 Reasonable upper bound for annual F 5.0 ... % of the level that would occur in the absence of fishing within the two years following an abundance ... commercial operation and a catch limit of 30 tonnes of C. gunnari was set aside for research and by-catch ... , the two areas should be treated as separate stocks for assessment purposes (see SC-CAMLR-XVI, Annex ...

   Document : Site Section: Publications

9. Skate tagging in the Heard Island and McDonald Island (Division 58.5.2) toothfish fishery up to 2013

   . Growth increments for tagged and recaptured B. eatonii indicated growth of ~20mm/year for both sexes ... liberty of nearly eight years for one B. irrasa. Range of movement in depth was between-266 m and 280 m ... recapture rate of less than one percent. The average distance between release and recapture for each of the ... from release to recapture, with B. irrasa tending to move in depth more than the other two species ...

   Meeting Document : WG-FSA-13/22 : Auteur(s): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)

10. Fishery Report 2014: Dissostichus spp. South Sandwich Islands (Subarea 48.4)

    each year are provided. Note: length-frequency distributions are only presented for those years in ... Lognormal recruitment SD 1.0 By-catch of fish 20. Catch limits for by-catch species groups ... , and in 2014, with the introduction of species-specific catch limits for the two target species, whole ... . The precautionary catch limit for D. mawsoni is 28 tonnes. Season 1 December to 30 November By ...

    Document : Site Section: Publications

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