Résultats de la recherche

1. Low genetic diversity and temporal stability in the Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of the Antarctica

   Abstract:  We present our data on DNA-analysis of recent (2011-2013) samplings of Antarctic ... results, based on analysis of SNP variation of the most informative subset of nuclear genetic markers ... presented in Kuhn and Gaffney, 2008, do not support temporary stable genetic differentiation of samples from ... stability in the Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of the Antarctica ...

   Meeting Document : WG-FSA-13/07 : Auteur(s): N.S. Mugue, A.F. Petrov, D.A. Zelenina, I.I. Gordeev and A.A. Sergeev (Russia)

2. Deployment and recovery of an archival tag on an Antarctic toothfish in the Ross Sea

   migration patterns in fishes. Understanding these movement patterns is one of the key information needs for ... the assessment and management of Antarctic toothfish. We deployed 4 pop-off satellite archival tags on ... large toothfish on the Ross Sea slope in January 2013 and report on the first recovery of an Antarctic ... 24, 2013), providing 335 days of data archived at 10 min intervals. Summaries of raw data show strong ...

   Meeting Document : WG-FSA-14/64 : Auteur(s): S.J. Parker, D.N. Webber and R. Arnold (New Zealand)

3. Semi-empirical acoustic estimates of krill biomass derived from simulated commercial fishery data based on single-frequency acoustics

   fishing seasons. From these data we develop semi-empirical indices of acoustic biomass in a Generalized ... Linear Modeling framework. We correlate these estimates of biomass with acoustic estimates derived from ... Elephant Island and West Shelf Areas of the US AMLR survey grid. Cross-validation of acoustic estimates ... frequency of animals is skewed towards larger animals. We show that it is possible to develop semi-empirical ...

   Meeting Document : SG-ASAM-15/03 : Auteur(s): A.M. Cossio, G.W. Watters, C.S. Reiss, J. Hinke and D. Kinzey (USA)

4. Results of the longline survey for toothfish in the northern Ross Sea region (Subarea 88.2 SSRUs A–B) by the FV Janas, New Zealand

   part of a multi-year and multi-member research plan using standardised longline gear to sample ... toothfish populations in the northern areas (60°‑ 66° S) of Subarea 88.2 SSRUs A–B. Sampling strategy and ... data collection adhered to standards set in CM 41-10 (2014). A total of 49.85 t of Antarctic toothfish ... sex-specific Fulton’s condition factor observed in the northern region of SSRU 88.2B were lower than ...

   Meeting Document : WG-SAM-15/46 : Auteur(s): S.J. Parker, R.J.C. Currey and S. Mormede (New Zealand)

5. Seasonal variation in the diet of Arctocephalus gazella at 25 de Mayo/King George Island, South Shetland Islands, Antarctica

   Abstract:  The trophic study of Arctocephalus gazella is an essential tool for assessing its ... ecological role as a top predator of the Antarctic marine ecosystem. The aim of this study was to analyse its ... diet during an annual cycle. To our knowledge, this is the first report of the feeding habits of A ... . gazella during the winter period in the South Shetlands area. A total of 224 scats were collected in the ...

   Meeting Document : WG-EMM-15/37 : Auteur(s): A. Harrington, G.A. Daneri, A.R. Carlini, D.S. Reygert and A. Corbalán (Argentina)

6. The use of net monitoring cable in trawl fishery for krill

   of using a net cable to inform crew and scientists on trawl performance. Some results from ongoing ... tests demonstrate its potential in allowing observations of trawl in relation to krill distribution and ... behaviour, including real time imaging of krill and predator behaviour in relation to fishing gear during ... experiments. Due to the vessel-and gear differences of Saga Sea and Antarctic Sea presently using the ...

   Meeting Document : WG-EMM-17/47 : Auteur(s): O.R. Godø

7. Measurement of capacity in CCAMLR exploratory fisheries in Subareas 88.1 and 88.2: Secretariat update 2017

   Abstract:  This paper presents an update of the metrics of capacity and capacity utilisation ... not indicate an excess of capacity in the fishery. As previously reported, based on a measure of ... management areas compromises the ability of the Secretariat to forecast and issue a timely closure notice to ... reduce the possibility of an overrun using the current fishery forecasting procedure. Author(s):  CCAMLR ...

   Meeting Document : WG-FSA-17/05 : Auteur(s): CCAMLR Secretariat

8. Comparison of NASC values calculated by swarm-based and grid-based acoustic data processing methods for Antarctic krill density estimation

   Abstract:  The one nautical mile integrated Nautical Area Scattering Coefficient (NASC) values of ... -based acoustic data processing methods. All parameter settings were consistent with the reports of SG ... -ASAM-2017 except that the dB difference window of Sv 120 kHz-Sv 38kHz is set 0 to 20 dB. And the two ... groups of results were compared by correlation, linear regression analysis and nonparametric significant ...

   Meeting Document : SG-ASAM-18/04 Rev. 1 : Auteur(s): X. Yu, X. Wang and X. Zhao

9. Development of methods relevant to feedback management (FBM) for the krill fishery

   environment essential for the implementation of a Feed-Back Management (FBM) system. In terms of FBM, Marine ... . Thus, data supporting FBM as an integral part of the broader management strategies of the krill ... fisheries within Domain 1 are critical if the fishery is to be managed by an empirical understanding of ... during the fishing season as a measure of the available prey field. This information can be integrated ...

   Meeting Document : WG-EMM-18/08 : Auteur(s): B.A. Krafft, A. Lowther, G. Macaulay, M. Chierici, M. Biuw, A. Renner, T.A. Klevjer, R. Øyerhamn, C.A. Cárdenas, J. Arata, A. Makhado, C. Reiss and O.A. Bergstad

10. Indicative trends in by-catch of sharks in the CAMLR Convention Area

    Abstract:  Conservation Measure 32-18 on the conservation of sharks specifies that “directed ... .” Further, that “any by-catch of sharks shall, as far as possible, be released alive.”  Here, we examine ... increased during the last 10-year period, with most of the by-catch reported in Division 58.5.2 and ... substantially lower catches in other statistical management areas. We highlight issues, some of which are in ...

    Meeting Document : WG-FSA-18/63 Rev. 1 : Auteur(s): C.D. Jones

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