Résultats de la recherche

1. Spatial variation in Antarctic toothfish (Dissostichus mawsoni) catch rate, mean weight, maturity stage and sex ratio across Divisions 58.4.1, 58.4.2 and 58.4.3b

   management advice in these Divisions is understanding the distribution, abundance and boundaries of the ... reports on the development of generalised additive mixed models to characterise relationships between ... the structure and functioning of the stock. Author(s):  P. Yates, P. Ziegler, P. Burch, D. Maschette ... environmental variables and (1) relative density, (2) mean weight, (3) proportion mature and (4) sex ratio of D ...

   Meeting Document : WG-FSA-17/16 : Auteur(s): P. Yates, P. Ziegler, P. Burch, D. Maschette, D. Welsford and S. Wotherspoon

2. Proposal for a mark–recapture experiment to estimate toothfish population size in Subarea 48.4

   Abstract:  One UK vessel fished around the South Sandwich Islands (Subarea 48.4) in in July, 2005 ... programme to assess the toothfish population. Catch rates were similar to those experienced in Subarea 48.3 ... . The UK proposes to undertake a more extensive mark-recapture experiment in Subarea 48.4 over the 2006 ... – 2007 fishing seasons. The objective of the experiment will be to assess toothfish population structure ...

   Meeting Document : WG-FSA-05/57 : Auteur(s): Delegation of the United Kingdom

3. Fisher training exchanges in seabird mitigation

   operating in the New Zealand fishery, which had a proven record of seabird-friendly fishing techniques. The ... report documents the process and outcomes of the first exchange to occur, which was for the placement of ... a Chilean skipper, Luis Uribe- a swordfish fisher from working in the Southern Chilean artisanal ... Abstract:  An initiative to provide training exchanges in seabird mitigation was trialled in 2004 ...

   Meeting Document : WG-FSA-05/47 : Auteur(s): S. Waugh (New Zealand)

4. Ichthyological investigation by fixed gears in Terra Nova Bay (Ross Sea) - species list and first results

   Abstract:  The species composition and bathymetric distribution of the fish fauna of Terra Nova ... coast to off-shore, down to 680 m. The bulk of catches were Nototheniidae (10 species, 83 % by weight ... depth suggests the presence of different assemblages of fish at different levels sampled. A detailed ... statistical analysis of catches in relation to various variables (depth, fishing gears, station, etc.) is also ...

   Meeting Document : WG-FSA-91/37 : Auteur(s): M. Vacchi, S. Greco and M. La Mesa (Italy)

5. Seabird mortality associated with Patagonian toothfish longliners in Falkland Island waters during 2002/03 and 2003/04

   million hooks in 2002/03 and 2003/04, respectively. Observers were present during the setting of 59% of ... toothfish longline vessels are meeting the requirements of the relevant National Plan of Action. Author(s ... Abstract:  The Patagonian toothfish longline fishery set approximately 7.5 million hooks and 9.6 ... all lines set during 2002 – 2004 to record adherence to the above provisions and record seabird ...

   Meeting Document : WG-FSA-05/56 : Auteur(s): H. Otley and T. Reid (United Kingdom)

6. Marine pollutants and fishing gear associated with seabirds at sub Antarctic Marion Island, 1996–1998: trends in relation to longline fishing activity

   toothfish in blastfreezers and 23 toothfish hooks were found. All the rope nooses, and 19 of the-books were ... Abstract:  Pollutants found in association with seabirds at subantarctic Marion Island for the ... found during the second year. This increase in fishing gear from 1996/97 to 1997/98 is interesting in ... view of the fact that the large influx of illegal toothfish vessels to the Prince Edward Islands waters ...

   Meeting Document : CCAMLR-XVII/BG/26 : Auteur(s): Delegation of South Africa

7. Estimating seabird by-catch in CCAMLR longline fisheries

   Abstract:  After many years of close to zero incidental seabird mortality in the longline fishery ... the observer data and to estimate total seabird mortality. Given the high profile of this issue in ... throughout the CCAMLR Convention Area, recent years have seen an increase in Subarea 48.3 and in Division ... 58.5.2. At the same time, concern has been expressed about the suitability of the method used to raise ...

   Meeting Document : WG-FSA-17/50 : Auteur(s): C. Darby and K. Olsson

8. Revised selectivities for Dissostichus eleginoides taken by longliners in Subarea 48.3

   method for estimating the selectivities based on an assumption that the proportions of the total CPUE in ... selectivities for the years 1995 – 2000 for input to the GYM assessment. In this paper, I propose a revised ... . This removes some of the ad hoc nature of the former estimation method. The method is illustrated by ... selectivity curves for toothfish taken by longliners around South Georgia and Shag Rocks over the period 1995 ...

   Meeting Document : WG-FSA-02/64 : Auteur(s): G.P. Kirkwood (United Kingdom)

9. Preliminary study on reproduction in Champsocephalus gunnari from Subarea 48.3, Dr Eduardo Holmberg survey, February/March 1994

   Abstract:  A preliminary histological analysis on the ovarian development in Champsocephalus ... commonly used. Oocytary resorption processes were observed during ovarian maturation. In some cases the ... ovaries presented few atretic oocytes; in others a generalized regression was found. In the southwest ... portion of the South Georgia shelf, 50 % of the ovaries exhibited a pre-reproductive regression stage ...

   Meeting Document : WG-FSA-94/28 : Auteur(s): G.J. Macchi and E.R. Barrera-Oro (Argentina)

10. KRILL DENSITY ESTIMATES IN CCAMLR SUBAREA 48.6 BASED ON ACOUSTIC DATA COLLECTED DURING JANUARY–MARCH 2008

    S in the sparsely studied CCAMLR subarea 48.6. The mean density of Antarctic krill, integrated to ... Abstract:  A multidisciplinary survey was conducted with the RV ‘G.O. Sars’ as part of the ... 270 m depth was 4.42 g/m2. The krill were mainly found in strong aggregations and were patchily ... distributed. The majority of the detected krill was distributed between 40 and 80 m depth, and approximately ...

    Meeting Document : WG-EMM-09/45 : Auteur(s): G. Skaret, B.A. Krafft and R. Korneliussen (Norway)

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