Résultats de la recherche
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Results on by-catch of fish during Ukrainian, Polish and Japanese krill fishery in the South Orkney Islands, South Georgia and Shetland Islands areas
Abstract: Observations on abundance of by-catch fishes were made during fishing operations for ... krill Euphausia superba Dana conducted by the Ukrainian trawler Grigory Kovtun in the vicinity of South ... Georgia (May to July, 1992), the Polish trawler Lepus on the fishing grounds of South Orkney Islands and ... South Georgia area (July to August, 1992) and Niitaka Maru to the north of the South Shetland Islands ...
Meeting Document : WG-FSA-96/19 : Auteur(s): Cielniaszek, Z., Pakhomov, E.A., Iwami, T.
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A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997/98 TO 2008/09
steadily increased over the first seven years of the fishery but has since stabilised at about 1000–1200 m ... Subarea 88.1 and for 8 years in Subarea 88.2. During that time a large amount of distributional and ... biological data has been collected on toothfish and the associated bycatch. The purpose of this report is to ... fishery which may be indicative of localised stock depletion. We considered here the catch limit, changes ...
Meeting Document : WG-FSA-09/36 : Auteur(s): S.M. Hanchet, A. Dunn and S. Mormede (New Zealand)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2006/07
years in Subarea 88.1 and for five years in Subarea 88.2. This report summarises the large amount of ... the second highest on record with a total of 3431 t against a combined catch limit of 3579 t. The ... management of the SSRUs within the two subareas was changed for the 2006 season as part of a 3-year ... experiment (SC-CAMLR-XXIV). One of the aims of the experiment was to simplify the administration of the ...
Meeting Document : WG-FSA-07/28 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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Interactions between seabirds and deep water hake trawl gear: an assessment of impacts in South African waters 2004/05
entanglement in fishing nets occurred at an average rate of 3.02 (0.91-5.44) birds per 100 trawls. Estimating ... Abstract: This study estimates the mortality of seabirds in the South African deep water hake ... trawl fishery. Observations of interactions between seabirds and trawl gear were made on 331 trawls ... frequently, with Shy Albatrosses comprising 43% and Black-browed Albatrosses 37% of birds killed. Small ...
Meeting Document : WG-FSA-06/41 : Auteur(s): B.P. Watkins, S.L. Petersen and P.G. Ryan (South Africa)
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Revised research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. with special reference to the information on spawning dynamics in Division 58.4.3a
at the WG-FSA in 2013 in order to maximize the expectation of tag-recapture to the extent possible ... Abstract: The current season (2014/15) is the final one of the first three-season research which ... numbers of tag recaptures from the estimated stock sizes using the Petersen method were generally ... results in other regions in the Southern Indian Ocean. The stock seems to be self-sustainable because of ...
Meeting Document : WG-FSA-15/19 : Auteur(s): Delegation of Japan
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A simulation study of krill fishing by an individual Japanese trawler (SC-CAMLR-VI/BG/37)
Abstract: A model is set up for the operation (which includes both searching and fishing) of a ... whose parameters are determined primarily from the scientific FIBEX surveys. Output from the model of ... the operation is compared with (and partially tuned to) statistics for a sample of data from the ... commercial fishery. A major inconsistency is found: haul times are a factor of 4-5 times greater in reality ...
Meeting Document : WS-KCPUE-89/04 : Auteur(s): D.S. Butterworth (South Africa)
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A simulation study of krill fishing by an individual JAPANESE trawler
Abstract: A model is set up for the operation (which includes both searching and fishing) of a ... whose parameters are determined primarily from the scientific FIBEX surveys. Output from the model of ... the operation is compared with (and partially tuned to) statistics for a sample of data from the ... commercial fishery. A major inconsistency is found: haul times are a factor of 4-5 times greater in reality ...
Meeting Document : SC-CAMLR-VII/BG/37 : Auteur(s): D.S. Butterworth (Invited Expert)
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A spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region
) covering the Ross Sea region. In this model run we spatially restrict the stock to cells where at least 5 ... % of the depth is deemed suitable as habitat for toothfish (120 cells – semi-restricted model), and ... – restricted model) or allowed to occupy the entire Ross Sea region including depths outside of those normally ... about the distribution of toothfish in areas where no fishing has occurred, such that the unrestricted ...
Meeting Document : WG-FSA-13/53 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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Gonad analysis of Antarctic toothfish in Subareas 58.4 and 88.3
. Frequency of ovarian development stages of Antarctic toothfish showed the highest proportion with 45.4% at ... 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 ...
Meeting Document : WG-FSA-17/09 : Auteur(s): J. Kim, S.-G. Choi, J. Lee, J. Lee and D. An
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Spatial and seasonal distribution of adult Oithona similis in the Southern Ocean: predictions using boosted regression trees
, with surface abundances 20% higher at night than during the day. There was no evidence of diel ... trees to derive relationships between environmental conditions and the distribution of the adult stage ... of the cyclopoid copepod Oithona similis in the Southern Ocean. Nearly 20 000 samples from the ... probability of detection (presence) and relative abundance of adults of this zooplankton species in surface ...
Meeting Document : WG-EMM-10/P14 : Auteur(s): M.H. Pinkerton, A.N.H. Smith, B. Raymond, G.W. Hosie, B. Sharp, J.R. Leathwick and J.M. Bradford-Grieve