Résultats de la recherche
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Mackerel icefish biomass and distribution on the results of acoustic survey carried out in February–March 2002
Abstract: Results of the acoustic survey of icefish carried out by Russian vessel STM-8390 ... Atlantida in February-March 2002 in Subarea 48.3 are presented. Biomass and distribution of icefish were ... estimates of icefish were made by comparison an observed TS in situ histograms with the size composition of ... the ensonified fish, obtained by trawling. Results of acoustic estimates of icefish biomass and ...
Meeting Document : WG-FSA-02/44 : Auteur(s): S.M. Kasatkina, V.Yu. Sunkovich, A.P. Malyshko and Zh.A. Frolkina
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An index of per capita recruitment
Abstract: An index of per capita recruitment (PCR) is proposed such that Ri PCRy–1 = R1y/(1–R1y ... )eM where R1 is the proportion of age-1 animals sampled in year y and M is the post-recruit mortality ... rate. The intent of the index is to facilitate investigation of reproductive success and the factors ... postulated to affect it. The formulation of PCR is based on the assumptions that: 1) post-recruit mortality ...
Meeting Document : WG-EMM-99/50 : Auteur(s): R. Hewitt (USA)
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Preliminary review of Antarctic toothfish maturity in the Ross Sea
Abstract: Results of comparative histological analysis of gonads of female and male Antarctic ... toothfish Dissostichus mawsoni caught by Russian longliners in the Ross Ross Sea of the Pacific sector in ... 2004/2005- 2006/2007 seasons are presented. Morphological indices of females and males, age, indices of ... gonads, fecundity, and condition by Fulton are described. The criteria of assessment of maturity stages ...
Meeting Document : WG-FSA-11/27 : Auteur(s): S.V. Piyanova and A.F. Petrov (Russia)
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Revised reproductive analysis of Dissostichus mawsoni in SSRU 58.4.1 C for the Korean exploratory longline fishery in 2012/2013
Abstract: In the Division 58.4.1 there are two stocks of Dissostichus mawsoni, which is ... vulnerable with a big range of about 1,000-2,000 t per SSRU in 58.4.1. However, there is not enough data to ... analyze the reproductive ecology of Dissostichus mawsoni in SSRU 58.4.1C based on the histological methods ... as a part of Korean research plan for Dissostichus spp. in SSRUs 58.4.1 C and E during 2012/2013 ...
Meeting Document : WG-FSA-13/45 : Auteur(s): I.J. Yeon, J.S. Lee, Y.J. Kwon, M.A. Jeon, S.K, Choi, K.J. Seok, D.W. Lee, K.Y. Ku and H.J. Kim (Republic of Korea)
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Gonad analysis of Antarctic toothfish in Subareas 58.4 and 88.3
Abstract: The ratio of female among the 600 specimens of Antarctic toothfish collected from the ... found to be 0.50, and displayed the tendency of increase with increase in the total length 140 cm. The ... gonadosomatic index of the fish was 2.5 for the female, and 1.7 for male. The hepatosomatic index of female ... (2.5) and male (2.7) were similar. The type of ovarian development of Antarctic toothfish was group ...
Meeting Document : WG-FSA-17/09 : Auteur(s): J. Kim, S.-G. Choi, J. Lee, J. Lee and D. An
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To the question for bioregionalisation of the Antarctic waters with ecosystem approach
Abstract: The nature of the composition (structure) and distribution Antarctic marine living ... resources to determine by position of the South Ocean and originaly it's geographic isolation unity ... Carrent sistem (ACC), but to circumpolar distribution of the whales, seals, seabirds, fishes, squids ... , species of macro- and mesoplancton, algaes and protosoa, in other words all the components of ecosistem ...
Meeting Document : SC-CAMLR-XXV/BG/18 : Auteur(s): Delegation of Russia
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Summer distribution, abundance and structure of krill populations (Euphausia superba and Euphausia crystallorophias) sampled by plankton net in the western Ross Sea (January–February 2000)
) were analysed to obtain a general picture of the summer distribution pattern, abundance and demography ... of krill in the western Ross Sea (Antarctica). A midwater sampler-trawl (Hamburg Plankton Net) was ... double oblique tow. Mean relative biomass of Antarctic krill Euphausia superba, in the area north of ... Continental Shelf, was 9.4 (±18%) g/l000m3 of filtered water with a mean density of 11.0 (±16%) indviduals per ...
Meeting Document : WG-EMM-00/38 : Auteur(s): M. Azzali, A. Sala and G. Brancato (Italy)
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Seabird mortality on longlines in Australian waters: a case study of progress and policy
Abstract: Seabird bycatch arising from longline fishing is known to kill tens of thousands of ... , particularly albatrosses, causing widespread declines in populations across the world. However the extent of ... seabird mortality is poorly known for most of the world's longline fisheries. Information on bird ... evolution of the seabird bycatch issue in the Australian Fishing Zone (AFZ), where the magnitude of the ...
Meeting Document : WG-FSA-98/29 : Auteur(s): R. Gales, N. Brothers, T. Reid, D. Pemberton and G.B. Baker (Australia)
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On the status of mesopelagic fish (myctophidae) in the Southern Ocean ecosystem
Abstract: Analysis and synthesis of results of Russian and foreign research into the trophic ... relationships of myctophids demonstrate that this group of mesopelagic fish plays a significant role in the ... community of marine organisms of the Southern Ocean. The trophic status of myctophids has been determined ... - they are zooplankton-eaters who consume a considerable amount of meso and macroplankton which ...
Meeting Document : WG-FSA-93/17 : Auteur(s): A.N. Kozlov (Russia)
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Assessing data requirements for tag-based estimates of local biomass in data-poor and exploratory fisheries
impact on the numbers of tagged fish recaptures and accuracy of tag-based estimates using the Chapman ... estimator. The results showed that tag-based biomass estimates obtained from a low numbers of recaptures ... will have a high risk of over-estimating biomass and that for a given number of tagged fish available a ... minimum numbers of recaptures are required to ensure a low likelihood of biomass overestimation. For ...
Meeting Document : WG-SAM-17/13 : Auteur(s): L. Robinson, P. Burch and K. Reid