Résultats de la recherche
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Spawning pattern and type of fecundity in notothenioids collected around the Elephant and South Orkney Islands
Abstract: The frequency distribution of oocytes diameter and relative fecundity (FR) of 4 ... georgianus) was carried out, in females collected during a fishery research survey around the Elephant Island ... development, while the determination of RF was performed by a gravimetric method. Five were the main ... -vitellogenic appeared clearly separated from the most advance mode of mature oocytes; (ii) in hydrated ovaries ...
Meeting Document : WG-FSA-16/22 : Auteur(s): G. Plaza, P.M. Arana, F. Becker, A. Zavatteri and V.H. Castillo
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Report on the survey in Subarea 48.2 in 2015–2017
Abstract: The three years of survey and observations of Dissostichus spp. in statistical Subarea ... 48.2 on board the Ukrainian vessel SIMEIZ. Survey was conducted in accordance with the recommendations ... of the Scientific Committee and Commission. Obtained data will be used for the future biomass ... estimation of the target species and making decision for the possible future fishing on that fishing ground ...
Meeting Document : WG-FSA-17/43 : Auteur(s): Delegation of Ukraine
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Engaging ‘the crowd’ in citizen science and remote sensing to learn about habitat affinity of two Southern Ocean seals
presence/absence patterns of the Weddell seal (Leptonychotes weddellii), and has recently been adapted for ... crabeater seals (Lobodon carcinophagus) in the Weddell Sea region. Satellites Over Seals provides an ... and crabeater seals. Using high-resolution satellite imagery (VHR; 0.3–0.6 m resolution) and the ... online platform, Tomnod, to host VHR for the public (i.e. “the crowd,”) to search, we collected presence ...
Meeting Document : WG-EMM-2019/37 : Auteur(s): M.A. LaRue, D.G. Ainley, J. Pennycook, K. Stamatiou, M. Dozier, J. Saints, L. Sales, N. Nur, S. Stammerjohn and L. Barrington
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Brief report on scientific observation on the fishery vessel Simeiz (FAO Statistical Area 41, November 2006 to March 2007)
Abstract: Scientific observation was conducted in the commercial trip on the ling-liner «Simeiz ... », operating under the Ukrainian flag, in the south-western Atlantic Ocean outside the exclusive (marine ... ) economic zones of the foreign states (FAO statistical area 41) in the period from November, 7, 2006 till ... the biological state of fishes both in different operating periods and on different fishery grounds ...
Meeting Document : WG-FSA-07/11 : Auteur(s): A.K. Zaytsev (Ukraine)
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Diet of two icefish species from the South Shetland Islands and Elephant Island, Champsocephalus gunnari and Chaenocephalus aceratus 2001–2003
Abstract: The summer diet of two species of icefishes (Channichthyidae) from the South Shetland ... 2001 to 2003. C. gunnari fed almost exclusively on krill (Euphausia superba) in all years. The ... importance of other taxa (Themisto gaudichaudii, mysids, myctophids) in the diet was negligible. The average ... % body weight per day. Most of the stomachs of C. aceratus were empty. Stomachs with food contained ...
Meeting Document : WG-FSA-03/61 : Auteur(s): H. Flores, K.-H. Kock, S. Wilhelms (Germany) and C.D. Jones (USA)
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CPUEs and body length of Antarctic krill during the 1999/2000 season in Area 48
Abstract: Four Japanese krill fishing vessels operated in Area 48 during the 1999/2000 split year ... . In Subarea 48.1, the operation started in December and lasted until June. In Subarea 48.2, operation ... . Trawling positions, CPUEs and body length of Antarctic krill during the period is described. The krill ... length frequency distribution was further compared with those obtained by the CCAMLR international ...
Meeting Document : WG-EMM-01/36 : Auteur(s): S. Kawaguchi and M. Naganobu (Japan)
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Do krill and salp compete? Contrary evidence from the krill fisheries
feeding on phytoplankton were analysed using logbook data from Japanese krill trawlers operating near the ... Antarctic Peninsula. Interannual and seasonal variability of the timing, duration and intensity of salp ... blooms and the presence of green krill were analysed. No relationship between salp density and the ... proportion of green krill in the catches was evident when both salps and krill were taken together. In the ...
Meeting Document : WS-AREA 48-98/4 Rev. 1 : Auteur(s): S. Kawaguchi (Japan), W.K. de la Mare (Australia), T. Ichii and M. Naganobu (Japan)
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The Ross Sea toothfish fishery: proposal for conditional transition of classification from exploratory to established
Abstract: The Ross Sea toothfish fishery in Subarea 88.1 and 88.2A&B has been classified by ... CCAMLR as an exploratory fishery since 1998. The current classification of this fishery as ‘exploratory ... ’ has led to the widespread misconception that little information is available for this stock, and that ... a rigorous assessment of the stock status and estimation of long-term precautionary yield has yet to ...
Meeting Document : WG-FSA-11/32 : Auteur(s): C. Jones (USA) and S. Hanchet (New Zealand)
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Pilot study using electronic satellite tags to determine movements of Antarctic toothfish in the Ross Sea region
along the Ross Sea continental slope in January 2012. They will be programmed to pop-off the fish, float ... to the surface, and transmit in December 2012. The purpose of this paper is to provide an ... announcement for members to distribute to vessels, crew and observers given the chance that these fish may be ... encountered in the fishery. The announcement details what to do if a satellite tagged fish is encountered, and ...
Meeting Document : WG-FSA-11/49 : Auteur(s): S. Parker (New Zealand)
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A system-of-equations approach to modeling age structured fish populations: the case of Alaskan red king crab, Paralithodes camtschaticus
-structured populations using trawl survey age/size frequency data. The analysis builds upon a Ricker spawner ... -recruit structure and provides a cohort-based estimation method that retains the underlying dynamic ... properties of a delay-difference model. The framework shares a common spawner-recruit function across age ... -class equations. This exploits the commonality among cohort members and serves as an instrumental ...
Meeting Document : WS-CRAB-93/23 : Auteur(s): J.A. Greenberg, S.C. Matulich and R.C. Mittelhammer (USA)