Résultats de la recherche

1. Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea

   analytically by the constant 2, so CV = 1.4142 IAPE. Von Bertalanffy growth curves were fi tted to the data ... determine Pelvic length (cm) 0 20 40 60 80 100 T ho rn le ng th ( m m ) 0 2 4 6 8 10 12 14 ... 4; few thorns (11%) were scored as having a readability of 1 or 2. The fi nal sample size of aged ... about Figure 2: Four images of a caudal thorn from SRR 197, a 73 cm female Amblyraja georgiana. Star ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 183–194 : Auteur(s): Francis, M.P. and C. Ó Maolagáin

2. Observation of seabirds in the Southern Ocean in 1988/89

   the RV Akademik Fedorov. 2. METHOD OF OBSERVATION Observations were made while the vessel was in ... January to 2 February 1989); • Russkaya and Leningradskaya (26 February to 12 March 1989); • Bunger ... Islands area (Figure 2), where their numbers reached more than 100 during a single observation shift ... °18'S, 74°W. Surface water temperature in this area was minus 2°C. Birds congregated together so ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 521–542 : Auteur(s): Vagin, A.V. and V.V. Popov

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

   stock within a 2–3 decade time frame and thus result in a failure to achieve the objectives of Article ... Natural mortality Mean annual M 0.13 von Bertalanffy growth t0 –4.2897 L∞ 2 870.8 mm k 0.02056 ... –30 Dec 0–945 tonnes yr–1 (see Table 2) 0–90 tonnes yr–1 (see Table 2) Simulation specifications ... are shown in Table 2. Fishing selectivity for sce- narios 1 to 6 was modelled as a linear increase ...

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

4. The 1991/92 fishery for Dissostichus eleginoides in Subarea 48.3

   npOMbICJIOBbIMM 1 CCAMLR Secretariat, 25 Old Wharf, Hobart, Tasmania 7000, Australia 2 Instituto de Ecologia y ... different periods (see Figure 2). Vessel size was reported as 500 to 1 000 tonnes for Bulgaria and Russia ... (Tables 1 and 2). In the Chilean fleet six different hook sizes of four general types were used: • Type ... -CAMLR, 1992b). With the exception of vessel (e) (Table 2), the hooks used in the Russian fishery were ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 31–48 : Auteur(s): Agnew, D.J. and C.A. Moreno

5. Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground

   bias and imprecision for the CCODE model of the order of 2% while no increase was detected using the ... for D. eleginoides at HIMI ( ) 2/2 ; 0 1 ; La aS a a λ σ λ λ é ù- -ë û¢ = < £ = > (1) where ... values obtained from CASAL for Ground B trawl catches for season 2 (mid-season: 1 May–30 September) and ... B and C were 8 284 and 3 416 respectively, with trawl responsible for 2 158 of the Ground C num ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 29–45 : Auteur(s): Candy, S.G., D.C. Welsford, T. Lamb, J.J. Verdouw and J.J. Hutchins

6. Observations of fishing operations on a krill trawler and distributional behaviour of krill off Wilkes Land during the 1985/86 season

   . Information utilized in this report was collected on board Zuiyo Maru No. 2 (3 023 tons, Hakodate Kokai ... Scotia Sea. 2. THE FISHING STRATEGIES 2.1 Favorite Krill Quality Three types of products were ... produced by Zuiyo Maru No. 2 : fresh-frozen krill (for fishing bait and food in fish culture), boiled ... capture, whereas meal can be processed much later. The major products of Zuiyo Maru No. 2 were fresh ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 335-368 : Auteur(s): Ichii, T.

7. A simulation study of the method of deriving natural mortality rate using data for Champsocephalus gunnari in Subarea 48.3

   improved if its behaviour and performance were to be studied by means of mathematical simulation. 2 ... corresponds to selected natural mortality rate; (vi) steps 2 to 5 are then repeated for a range of values of ... natural mortality. (1) (2) The main principle of the natural mortality rate verification is based on ... regression equation (2) will be equal to zero (fishing effort is proportional to fishing mortality). In ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Auteur(s): Gasyukov, P.S. and R.S. Dorovskikh

8. A simple approach for calculating the potential yield of krill from biomass survey results

   along these lines. 2. METHODS The mathematical detail of the calculations carried out is given in ... (a + t) = .e .. [ 1- e-{3(a+l)] O::;t::;l/o (2) Rosenberg et al.'s (op.cit.) fit to data ... are: a. =2; 4 ~=2;4 O's = 0; 0.5 A value O's = 0 is, of course, unattainable. It was selected to ... " set of parameter value choices. 4. RESULTS AND DISCUSSION Table 2 shows the estimates of A for the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Auteur(s): Butterworth, D.S., A.E. Punt and M. Basson

9. Seabird mortality in the Patagonian toothfish longline fishery around Crozet and Kerguelen Islands, 2001–2003

   /thousand hooks respectively in 2001/02 and 2002/03 (Table 2). Although the number of seabirds caught in ... a greater fi shing effort, the number of deployed hooks increased by 76%, Tables 2 and 3). Also ... zones) (Figure 2). Incidental by-catch (by-catch rate Fig- ure 2a and numbers of birds Figure 2b ... ± 0.06 birds/thou- sand hooks (March). Table 2: Summary of observed incidental mortality of seabirds ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 53–80 : Auteur(s): Delord, K., N. Gasco, H. Weimerskirch, C. Barbraud and T. Micol

10. Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia

    London W1J 5PN United Kingdom Email – j.clark@mrag.co.uk 2 Biology Department Imperial College ... July, and 21% in August. Figure 2 shows the distribution of interactions for both species by month ... centred on 53.75°S 40.5°W in Figure 2, western Shag Rocks (53.25°S 42.5°W) and SE South Georgia (55.25 ... , compared to the simple model, since most of the catches were taken from the non-high CPUE areas (Table 2 ...

    Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Auteur(s): Moir Clark, J. and D.J. Agnew

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