Resultados de la búsqueda
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Stock assessment of D. eleginoides in Subarea 48.3 using dynamic production models
in subarea 48.3. This type of the models differ from the models currently used by CCAMLR Working ... estimates by years of fishing. Both models showed that the D. eleginoides stock status at the initial period ... in recent years. The trends in biomass dynamic estimated by DPM are very similar with trends from ...
Meeting Document : WG-FSA-02/78 : Autor(es): P.S. Gasiukov and R.S. Dorovskich (Russia)
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Environmental response of upper trophic level predators reveals a system change in an Antarctic marine ecosystem
been amplified by predator-induced mortality, resulting in breeding predators now regularly operating ... close to the limit of krill availability. Understanding how krill demography is affected by changes in ... physical environmental factors and by predator consumption and how, in turn, this influences predator ...
Meeting Document : WG-EMM-01/21 : Autor(es): K. Reid and J.P. Croxall (United Kingdom)
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Preliminary review of Antarctic toothfish maturity in the Ross Sea
toothfish Dissostichus mawsoni caught by Russian longliners in the Ross Ross Sea of the Pacific sector in ... gonads, fecundity, and condition by Fulton are described. The criteria of assessment of maturity stages ... spawning takes place from June to August. By the histological data 7-40% females had prespawning ovaries ...
Meeting Document : WG-FSA-11/27 : Autor(es): S.V. Piyanova and A.F. Petrov (Russia)
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QUANTIFYING MOVEMENT BEHAVIOUR OF VESSELS IN THE ANTARCTIC KRILL FISHERY
Abstract: Ten years of recent finescale haul-by-haul krill data were used to characterize the ... obvious for operations by Japanese fishing vessels. There were differences between statistical areas with ... assist in interpreting the annual fishing patterns, which can best be collected by scientific observers ...
Meeting Document : WG-EMM-09/P05 : Autor(es): S. Kawaguchi and S.G. Candy
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ANALYSIS OF ICE-FISH (CHAMPSOCEPHALUS GUNNARI) SPATIAL DISTRIBUTION FOR OPTIMIZATION OF THE BOTTOM TRAWL SURVEY SAMPLING
2002. Acoustic and trawl density samples obtained in the near-bottom layer covered by trawl survey are ... between fish biomass estimates from bottom surveys may be to a considerable degree stipulated by ... trawl HEK-4M and UK trawl FP120) and the trawl station location rather than by the variability of the ...
Meeting Document : SG-ASAM-09/07 : Autor(es): S. Kasatkina (Russia)
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Modelling crustacean fisheries: effects of parasites on management strategies
affected by symbiotic nemertean egg predators and parasitic castrators. Because these parasites commonly ... affect only females or feminize males, they may be protected by management practices that protect females ... fishery is affected by a parasite. Retaining females in the catch is preferable in most cases. Treating or ...
Meeting Document : WS-CRAB-93/09 : Autor(es): A.M. Kuris and K.D. Lafferty (USA)
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Variations in food composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) at South Georgia
/February 1991 and January 1992 by analyzing appr. 9,000 stomachs. Main prey items were krill (Euphausia ... krill shortage, such as in 1991, krill is replaced by Themisto gaudichaudii and sometimes Thysanoessa ... attributed to differences in prey availability, but appears to be much less influenced by differences in ...
Meeting Document : WG-FSA-92/26 : Autor(es): K.-H. Kock (Germany), I. Everson (United Kingdom), S. Wilhelms (Germany), S. Campbell (United Kingdom), J. Szlakowski (Poland), G. Parkes (United Kingdom), Z. Cielniaszek (Poland) and C. Goss (United Kingdom)
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The state of exploited fish stocks in the Southern Ocean - a review
Abstract: Antarctic finfish resources have been subject to exploitation primarily by the Soviet ... Electrona carlsbergi the fishery on all other species is restricted by conservation measures. The stocks ... most heavily affected by fishing are those of Notothenia rossii in both sectors, Notothenia squamifrons ...
Meeting Document : SC-CAMLR-X/BG/13 : Autor(es): Delegation of Germany
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Age Determination of Notothenia gibberifrons from the South Shetland Islands, Antarctic Peninsula Subarea (Subarea 48.1)
composed by small and medium size fishes (14.8-38 cm of total length). Otolith and scale readings have been ... from the difficulty to differentiate false from annual checks in scales. Age determination by otolith ... established by CCAMLR will contribute to eliminate discrepancies on age and growth studies of Antarctic Fish ...
Meeting Document : WG-FSA-88/15 : Autor(es): E. Barrera-Oro (Argentina)
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Quantitative assessment of benthic fauna and assemblages in the Heard Island and McDonald Islands region
Statistical Division 58.5.2) region was undertaken by the Australian Antarctic Division (AAD) from 2003 to ... 2008. Quantitative samples collected during three cruises by the fishing vessel Southern Champion from ... susceptible to disturbance. The results of this assessment are being used by Australia in evaluating the ...
Meeting Document : WG-EMM-10/25 : Autor(es): T. Hibberd, D.C. Welsford, A.J. Constable, K. Moore and S. Doust (Australia)