Résultats de la recherche
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RECRUITMENT AND BODY SIZE IN RELATION TO TEMPERATURE IN JUVENILE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) AT SOUTH GEORGIA
, South Atlantic. Data from 13 demersal trawl surveys conducted over a 20-year period were analysed ... forecasts of years of good or poor recruitment for the toothfish fishery at South Georgia Author(s): M ... mirrored those previously observed in a range of krill-dependent land-based predators at South Georgia for ... understanding of recruitment variability holds great interest for fisheries managers and could be used refine ...
Meeting Document : WG-FSA-08/P02 : Auteur(s): M. Belchier and M.A. Collins
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Monitoring Antarctic toothfish (D. mawsoni) recruitment in the southern Ross Sea
the appearance of a second strong year class in 2016. Although the changes in age frequency were ... variability, and recruitment autocorrelation for an Antarctic toothfish stock. The continuation of the time ... recruitment variability, are key inputs for integrated assessments of fish stocks. A quantitative longline ... was started in 2012. The first year established the feasibility of carrying out a random stratified ...
Meeting Document : WG-FSA-17/57 : Auteur(s): S.M. Hanchet, S. Mormede, S. Parker, K. Large, A. Dunn and B. Sharp
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Analysis of seamount-specific catch and tagging data in the Amundsen Sea, SSRU 88.2H
liberty for less than 2 years, and that data from the Amundsen Sea slope SSRUs (88.2C–G) are included in ... Abstract: Catch, effort, and mark-recapture data for Antarctic toothfish from individual seamount ... areas. These metrics were also calculated for SSRU 88.2H as a whole. The analyses indicate that: Fish ... the stock assessment along with 88.2H. Fishing has occurred on almost every seamount in every year ...
Meeting Document : WG-SAM-14/27 : Auteur(s): S.J. Parker (New Zealand)
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Population assessment of Patagonian toothfish in Subarea 48.4
addition of catch at age information for 2011, a minor change to the initial parameters of the selection ... Abstract: This paper presents an update of the assessment of toothfish (Dissostichus spp.) in ... D. eleginoides in the northern region and a simple Petersen biomass estimate derived for D ... pattern and the inclusion of additional information on size at age. CASAL estimates of stock size, harvest ...
Meeting Document : WG-FSA-12/36 : Auteur(s): R. Scott (United Kingdom)
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Revisiting krill ageing method using eyestalk cuticles
Abstract: The development of a consistent and reproducible ageing method for krill is critical ... for improving the precautionary management of krill fisheries. The only method to date that has shown ... promise in the determination of the absolute age of krill is that of Kilada et al. (2017), which involves ... an inter-laboratory calibration should be undertaken as a community effort supported by CCAMLR, in a ...
Meeting Document : WG-EMM-2019/45 : Auteur(s): S. Kawaguchi, T. Barnes, N. Waller, B. Farmer, D. Hayes, R. Kilada, C. Reiss, G. Zhu, B. Krafft, A.-L. Agnalt, T. Ichii and T. Matsuda
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Measurements of sound-speed and density contrasts of Antarctic krill (Euphausia superba) on board RV Kaiyo Maru
an acoustical scattering model, information on size, morphology, orientation, sound–speed and mass ... -density contrasts between the animal and the surrounding water are required. Sound-speed and mass-density ...
Meeting Document : WG-EMM-08/56 Rev. 1 : Auteur(s): Y. Takao, H. Yasuma, R. Matsukura, K. Amakasu and M. Naganobu (Japan)
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Vast assembly of vocal marine mammals from diverse species on fish spawning ground
Abstract: This published paper utilizes data from an acoustic low frequency system to collect ... swimbladdered fish and exploits their resonance frequency for sizing and identification purposes. To become ... suitable for krill and whale interaction we might need to increase the frequency range. However, the ... Secretariat Workflow Status: Content Approved Delegation responsibility for releasing documents: Norway ...
Meeting Document : WG-EMM-16/P01 : Auteur(s): D. Wang, H. Garcia, W. Huang, D.D. Tran, A.D. Jain, D.H. Yi, Z. Gong, J.M. Jech, O.R. Godø, N.C. Makris and P. Ratilal
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Using stationary acoustic platforms to assess precision and accuracy of acoustical krill surveys
data were collected both during day and night for the 2019 Scotia Sea large-scale krill monitoring ... survey. Data from upward-looking, stationary platforms offer unique opportunities for assessing the ... a regular basis deployed stationary platforms in the main area for commercial krill harvesting at ... to provide an estimate of the magnitude of bias introduced by night-time acoustic sampling. We found ...
Meeting Document : WG-EMM-2019/32 : Auteur(s): T. Klevjer, G. Skaret and B.A. Krafft
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1994 winter and 1994/95 pup-rearing season
previous year. The proportion of adult animals affected (20%) was slightly lower than 1994. The proportion ... of females involved (40%) was 26% less than the previous year. The incidence of severe injury (30 ... Abstract: Surveys of Antarctic fur seals entangled in man-made marine debris were carried out for ... 1994 winter. In the 1994/95 summer the number of entangled seals (20) was also the lowest yet recorded ...
Meeting Document : SC-CAMLR-XIV/BG/08 : Auteur(s): Delegation of the United Kingdom
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Implementation of the CCAMLR Scheme of International Scientific Observation during 2017/18
the Convention Area on board fishing vessels during the 2018 season (based on data received by the ... Secretariat up to 8 October 2018). Developments in the Scheme of International Scientific Observation Program ... are discussed with several metrics of observer performance presented, demonstrating an improved ... Workflow Status: Content Approved Document Release Consent: No Delegation responsibility for releasing ...
Meeting Document : WG-FSA-18/11 Rev. 1 : Auteur(s): CCAMLR Secretariat