Résultats de la recherche

1. By-catch of fish in longline catches off the Kerguelen Islands (Division 58.5.1) during the 1995/96 season

   at the limit of their bathymetric range. An abundance index was used to show bathymetric and ... Paper Title:  By-catch of fish in longline catches off the Kerguelen Islands (Division 58.5.1 ... ) during the 1995/96 season Abstract / Description:  By-catches of fish taken during a commercial fishing ... species were identified, of which the grenadier Macrourus carinatus, the skates Bathyraja eatonii  and B ... others were mainly shelf-dwelling species found at the limit of their bathymetric range. An abundance ... . 54 fish recorded per longline set). M . car ina tus was rare at depths of less than 700 m ... insignificant at depths of less than 700 m, shows a steady but gradual increase with depth (Figure 3). The ... of 725 to 1 348 m. The porbeagle Lamna nasus was present in only three sets at depths of 280 to ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 175–193 : Auteur(s): Duhamel, G., P. Pruvost and D. Capdeville

2. A study of Patagonian toothfish (Dissostichus eleginoides) post-tagging survivorship in Subarea 48.3

   Paper Title:  A study of Patagonian toothfish (Dissostichus eleginoides) post-tagging survivorship ... survivorship of toothfish following tagging were carried out on eight different vessels fishing in Subarea 48.3 ... . Toothfish were kept in tanks with seawater replacement for at least 12 hours after tagging. On one vessel ... , fish with a variety of injuries were selected to see if this affected recovery. In the final analysis ... seawater replacement for at least 12 hours after tagging. On one vessel, fish with a variety of injuries ... species, including for skates and rays at South Georgia (Endicott and Agnew, 2004). One of the most ... g oo d c on d it io n at th e st ar t of th e tr ia l, it is s us pe ct ed ... al v ol um e of ap pr ox im at el y 1 60 0 lit re s. A ta p an d ou tl et ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 279–289 : Auteur(s): Agnew, D.J., J. Moir Clark, P.A. McCarthy, M. Unwin, M. Ward, L. Jones, G. Breedt, S. Du Plessis, J. Van Heerdon and G. Moreno

3. The utilization of seabird censuses for krill monitoring

   :  The possibility of using bird observations made at sea as a means of monitoring krill in the Antarctic ... Paper Title:  The utilization of seabird censuses for krill monitoring Abstract / Description ... Ocean is explored. No variation source directly linked with krill was identified by means of ... correspondence analysis. Contour plotting, profile analysis and tests for equality of covariance matrices proved ... possibility of using bird observations made at sea as a means of monitoring krill in the Antarctic ocean is ... mentioned species are more or less suitable for direct observation, at the present state of the art it is ... present paper is the result of exploring the possibility of using bird observations made at sea, for the ... sufficient with the data set at hand. - 400 - 2. Function contour plotting: Taking the centroids of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 393-425 : Auteur(s): Marschoff, E.R., J.G. Visbeek and L.R. Fontana

4. Krill biomass in Area 48 and Area 58: recalculations of FIBEX data

   Paper Title:  Krill biomass in Area 48 and Area 58: recalculations of FIBEX data Abstract ... estimates of mean density and biomass for the Indian Ocean sector and the West Atlantic sector as well as ... estimates were calculated using the target strength relationships used at the original FIBEX acoustic ... workshop. Estimates for the different areas were also calculated using the target strength relationships of ... (Greene et al., 1990) 160 50kHz In the absence of new information on laill TS at 50 kHz the method ... relationship at 50 kHz given in Klindt and Zwack (1984), which corresponds to a TS of -63.86 dB for a 40 mm ... new information was available from experimental studies at 200 kHz. The method of Greene et al ... less than that at 120 kHz appears reasonable. In the absence of krilllength frequency information, it ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 157–181 : Auteur(s): Trathan, P.N., D.J. Agnew, D.G.M. Miller, J.L. Watkins, I. Everson, M.R. Thorley, E. Murphy, A.W.A. Murray and C. Goss

5. A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia

   Paper Title:  A comparison between otoliths and scales for use in estimating the age of ... understanding the population dynamics and productivity of a fish stock. The use of scales to estimate age can ... result in large errors in age data for long-lived species, usually due to compression of scale circuli ... whose age has been estimated using both scales and otoliths. We estimated the age of D. eleginoides ... suckers grew quickly at ages 4-7 years, few surviving beyond an age of 9 years. Annual mortality was ... difference in the other 56% of cases. At its 1998 meeting the CCAMLR Working Group on Fish Stock ... request. We present the results of pairwise comparisons between age estimations using otoliths and ... ): an anndus consists of a and baked in at 4000C for hyaline and an opaque zone, and is not necessarily ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Auteur(s): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson

6. Evaluating the impact of multi-year research catch limits on overfished toothfish populations

   assessed in this study indicate that, where a stock has been depleted to at or below 20% of the median ... Paper Title:  Evaluating the impact of multi-year research catch limits on overfished toothfish ... populations Abstract / Description:  In stocks that have been depleted by overfishing, the benefit of ... may contribute to delaying or preventing the recovery of such stocks. Through simulating a Patagonian ... research program, while at the same time minimising the risk that these catches hinder the recovery of a ... been depleted to at or below 20% of the median unfished spawning stock biomass, research catches in ... . The unfished median biomass (B0) was set at 5 000 tonnes, to be within the range of total aggregate ... selected at random from a lognormal distribution with a CV of 0.6 and mean recruitment set to achieve a ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 47–55 : Auteur(s): Welsford, D.C

7. Fishing intensity of the Soviet fleet in krill fisheries in the southern Atlantic (Subareas 48.2 and 48.3)

   probability statistical theory of fishery systems developed at AtlantNIRO. The impact of the commercial fleet ... Paper Title:  Fishing intensity of the Soviet fleet in krill fisheries in the southern Atlantic ... (Subareas 48.2 and 48.3) Abstract / Description:  This paper provides an assessment of the impact of the ... % of the total catch. The calculations were based on haul-by-haul data from the Soviet fleet, using a ... Soviet fl eet, using a probability statistical theory of fi shery systems developed at AtlantNIRO. The ... . Haul-by-haul data from the commercial fl eet (i.e. coordinates at trawl start, time of trawl start ... fi shery at the start of a period was derived from the estimated fi shing intensity (Appendix 1 ... on the shelf and at the shelf break to the north of South Georgia. As the season progresses it ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 15–35 : Auteur(s): Kasatkina, S.M. and V.F. Ivanova

8. Otolith microstructure of juvenile mackerel icefish (Champsocephalus gunnari) (Channichthyidae) in the South Georgia area

   ) to 2.8 μm at 500 days (TL 13.1 cm). The pelagic stage of egg incubation development for fish of the ... Paper Title:  Otolith microstructure of juvenile mackerel icefish (Champsocephalus gunnari ... ) (Channichthyidae) in the South Georgia area Abstract / Description:  The otolith microstructure of juvenile ... a trawl survey of juveniles in February–March 2002 on the South Georgia shelf. Juvenile fish ... observed from November to July. The highest number of females at stage V was found in April–May. Spawning ... at depths of 140–244 m. Catches of C. gunnari increased in pelagic trawl samples in the 15–95 m ... - ment zones were selected at the beginning, mid- dle and end of the period, then their width was ... increments per zone and the mean otolith width at the end of the 100-day period estimated. Daily ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 173–181 : Auteur(s): Shcherbich, L.V

9. Preliminary results of a bottom trawl survey around Elephant Island in October and December 1987

   Paper Title:  Preliminary results of a bottom trawl survey around Elephant Island in October and ... December 1987 Abstract / Description:  A total of 40 bottom trawl hauls was carried out onboard RV ... Chaenocephalus aceratus, Notothenia gibberifrons and N. neglecta at least since February 1985. In N. rossii the ... proportion of larger (= older) fish in the catches increased. Composition of the catches of C. gunnari ... and N. neg/ecta at least since February 1985. In N. rossii the proportion of larger (= older) fish in ... of Bathyraja sp. (most probably B. maccaim) containing embryos close to hatching at 295-426 m depth ... were Harpagifer antarcticus, 2 pelagic fingerlings of N. neglecta (62 and 70 mm total length) at 20 ... WG-FSA-88/31 PRELIMINARY RESULTS OF A BOTTOM TRAWL ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 185-200 : Auteur(s): Kock, K.-H.

10. Estimates of fish stock biomass around South Georgia in January/February 1985

    . gibberifrons and Ps. georgianus were at a level of about 25 – 40% of that of the pristine state. The stocks ... Paper Title:  Estimates of fish stock biomass around South Georgia in January/February 1985 ... estimate stock sizes of the commercially exploited Notothenia rossii, N. guntheri, N. gibberifrons ... around South Georgia. Due to the small data base and the scarcity of comparative information the state of ... and Ps. georgianus were at a level of about 25 - 40% of that of the pristine state. The stocks most ... , 1985a) but nevertheless has been shown to provide acceptable results at least for some of the ... slightly increased. Stock size of 15 762 t ( t able 1) is obviouly still at a low level and was only ... - straints, however, stock size is assumed to be very low in comparison to tha t of 141 000 t at the onset ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 1-32 : Auteur(s): Kock, K.-H.

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