Résultats de la recherche

1. Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach

   , Ommastrephidae) in the Scotia Sea: an ecological approach Abstract / Description:  In anticipation of the ... development of a new fishery for the ommastrephid squid Martialia hyadesi in the Scotia Sea, this paper ... presents a revision of annual consumption of the species by higher predators and provides a brief review of ... information about the life cycle and distribution of the species obtained from research fishing and commercial ... exploratory survey in the vicinity of South Georgia, Shag Rocks and at the Antarctic Polar Frontal Zone ... (APFZ) west of South Georgia, and caught about 8 tonnes, all at the APFZ (Rodhouse, 1991). In ... (grey-headed albatrosses feeding chicks at Bird Island, South Georgia) to the APFZ north of South ... with about 60 000 tonnes of I. argentinus. In February 1996 another BAS research cruise at South ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 125–139 : Auteur(s): Rodhouse, P.G

2. WG-FSA-08/60

   snoods and hooks are attached Downline: A vertical section of line buoyed at the surface and ... connected to a weight or a number of weights such as chains or grapnels at the beginning or end of the ... buoyancy. Often used in downlines at the surface end to minimise the risk of a vessel propeller or ice ... backbone enters the water at about 1.5m from the stern of the vessel and starts sinking immediately, the ...

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3. Fishery Report 2014: Dissostichus eleginoides Heard Island (Division 58.5.2)

   to at least 3 000 m depth around the periphery of the plateau. Fish smaller than 60 cm total length ... estimate of M = 0.155 was derived from catch-at-age and aged mark-recapture data (Candy et al., 2011 ... median B0 of 108 586 tonnes (92 263–132 167; 95% CI), with the median spawning stock biomass (SSB) at ... by CCAMLR (Table 4). 29. Length–weight relationships, length-at-maturity data and estimates of ...

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4. WG-SAM-10/20

   impact assessment framework at different spatial scales, and implications for the validity of the ... impact assessment framework at different spatial scales, and implications for the validity of the ... use of vulnerability to describe the physical susceptibility of a VME organism to damage at the ... The initial New Zealand assessment summarized effort patterns at the extremes of large and small ...

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5. Fish stock assessment survey in Subarea 48.3

   fish survey in the vicinity of South Georgia, CCAMLR Subarea 48.3, is described. Details are given of ... positions of hauls, catch rates and size composition of catches. The standing stock of one of the most ... ) . 2. SURVEY AREA AND DESIGN The survey was aimed at providing information representative of the ... total of 66 sites was fished at South Georgia and 12 at Shag Rocks. The locations of the sites actually ... representative of a station within each depth stratum and at each location is shown in Table 2. 26 A ... species that migrate off the bottom at night. 3. DESCRIPTION OF VESSEL AND SAMPLING METHODS A stern ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 25–67 : Auteur(s): Everson, I., G. Parkes, K.-H. Kock, S. Campbell, Z. Cielniaszek and J. Szlakowski

6. Australia: Relevant references for the Patagonian toothfish (Dissostichus eleginoides) stock assessment in Division 58.5.2

   S.G. (2007) Comparison of estimators of effective sample size for catch-at-age and catch-at-length ... , Hobart, Australia. Candy S.G. (2008) Estimation of effective sample size for catch-at-age and catch-at ... effective sample size in the application of age length keys to estimation of catch-at-age proportions ... catch-at-age data and two years of survey abundance-at-age data. Document WG-SAM-09/07, CCAMLR, Hobart ...

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7. [node:field-journal-volume]:37-51

   exhibited a degree of sexual dimorphism. The age at which 50% of fi sh are sexually mature was estimated ... size class at which more than 50% of the fi sh sampled were at maturity stage 2 or greater. The ... at maturity and mean age at maturity. RESULTS Species Identifi cation Of the 361 individually ... estimates of the t0 values. Natural Mortality In all the available age data, 1% of males were at least 55 ...

   Science Journal Paper : 37–51

8. Australia: An integrated stock assessment for the Heard Island and McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery in Division 58.5.2

   separate datasets, a biomass index and proportions-at-age, is preferred over the numbers of fish at age ... assuming all fish of stage ≥ 2 are mature (black) and all fish stages ≥ 2 will be mature at their age + 2 ... . Stock hypothesis 3. Fishing history 4. Data collection 5. History of stock assessments 6. Data for ... • Ontogenetic movement: Péron et al (2016) Modelling spatial distribution of Patagonian toothfish through ...

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9. Pêcher en mer, pas en l'air

   Description / Abstract:  How to avoid by-catch of seabirds when fishing with bottom longlines ... attachment to non-IW longlines of 5 kg weights at 50 to 60 m intervals are recommended. 3. Vessels using ... at least 8.5 kg mass shall be used, spaced at intervals of no more than 40 m, or weights of at least ... 6 kg mass shall be used, spaced at intervals of no more than 20 m. 4. Longlines shall be set at ... design of mitigation measures may be tested on vessels carrying two observers, at least one appointed in ...

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10. Fishery Report 2018: Dissostichus eleginoides Heard Island Australian EEZ (Division 58.5.2)

    been found (Welsford et al., 2011; WG-FSA-15/55). Fifty percent of fish are estimated to be mature at ... limit of 1 663 tonnes for C. rhinoceratus. 28. Length–weight relationships, length-at-maturity data ... incidental mortality of birds and mammals Observers Each vessel to carry at least one scientific observer ... pp. Candy, S.G. 2011. Estimation of natural mortality using catch-at-age and aged mark-recapture ...

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