Résultats de la recherche

1. Precision of growth band determination from eyestalk sections of Antarctic krill (Euphausia superba) preserved in formalin

   Abstract:  Age information for commercial fish species is crucial to fishery management. Age ... Antarctic krill growth. This study presents important information for age determination, particularly for ... information for Antarctic krill (Euphausia superba) will be important for stock assessment modeling and future ... feedback management of krill fisheries. Samples stored in 70% ethanol provide an opportunity to detect the ...

   Meeting Document : WG-EMM-18/P16 : Auteur(s): G.P. Zhu, Y. Yang, Q. Song and H.T. Zhang

2. Aspects of the ecology of the bigeye grenadier at South Georgia

   , an average number for a macrourid of this size. A highly skewed sex ratio of 33:1 females: males was ... over 30 years and attaining lengths in excess of 80cm (Lt). Von Bertalanffy growth parameters were ... in the Patagonian toothfish longline fishery conducted around South Georgia were investigated. Age ... estimated for females and closely matched those of the congeneic species M. berglax from the Northern ...

   Meeting Document : WG-FSA-03/16 : Auteur(s): S.A. Morley, T. Mulvey, J. Dickson and M. Belchier (United Kingdom)

3. Use of a population model to assess the impact of longline fishing on wandering albatross populations

   Abstract:  An age-structured model of a wandering albatross Diomedea exulans population is ... rate of 2.29% per year, which concurs with global population trends. Sensitivity analyses of model ... investigate the potential impacts of new longline fisheries such as that for Patagonian toothfish Dissostichus ... population. Also, because wandering albatrosses are long-lived, population growth rates take approximately 30 ...

   Meeting Document : WG-IMALF-94/08 : Auteur(s): Coleen L. Moloney, John Cooper, Peter G. Ryan and W. Roy Siegfried (South Africa)

4. Entanglement of Antarctic fur seals in man-made debris at Bird Island, South Georgia

   compared to 30), it was substantially lower than during the 1988/89 and 1989/90 seasons (190 and 156 ... 1991 as part of an on-going study by the British Antarctic Survey. Only seven seals were observed ... incidence of entanglement during the pup-rearing period was slightly higher than in the previous year (48 ... years. Author(s):  Delegation of United Kingdom Title:  Entanglement of Antarctic fur seals in man-made ...

   Meeting Document : SC-CAMLR-XI/BG/09 : Auteur(s): Delegation of United Kingdom

5. Population and survival trends of wandering albatrosses (Diomedea exulans) breeding on Macquarie Island

   than 20 breeding pairs. Most breeding birds in this small population are banded and monitoring over the ... with information from an intensive demographic study conducted between 1994 and 2003. Annual breeding ... Ocean including Marion Island, Iles Crozet and Amsterdam Island. The age distribution of the current ... . Although the current population has remained stable at approximately 19 breeding pairs for the last seven ...

   Meeting Document : WG-FSA-04/50 : Auteur(s): A. Terauds, R. Gales, R. Alderman and G.B. Baker (Australia)

6. Demographic effects of extreme weather events: snow storms, breeding success, and population growth rate in a long-lived Antarctic seabird

   extreme weather events increase, there is an urgent need to understand and predict the ecological ... Antarctic petrels and assess whether snow storms are an important driver of annual breeding success and ... population growth rate. We used detailed data on daily individual nest survival in a year with frequent and ... heavy snow storms, and long term data on petrel productivity (i.e., number of chicks pro- duced) at the ...

   Meeting Document : WG-EMM-16/P13 : Auteur(s): S. Descamps, A. Tarroux, Ø. Varpe, N.G. Yoccoz, T. Tveraa and S.-H. Lorentsen

7. ANALYSIS OF KRILL OBSERVER COVERAGE IN SUBAREA 48.3

   one season, and have been present on board for about 30% of the fishing season. They have achieved a ... efficient sampling proportion, at least for 48.3, should be >50% of vessels sampled each season, 20% of ... total season hauls sampled for krill and an equivalent or higher sampling proportion for larval fish ... strategies should be pursued for at least 4 years before the Scientific Committee will have sufficient data ...

   Meeting Document : WG-EMM-09/25 : Auteur(s): D.J. Agnew, P. Grove, T. Peatman, R. Burns and C. Edwards (United Kingdom)

8. A characterisation of the toothfish fishery in the Ross Sea region (Subarea 88.1 and SSRUs 88.2A–B) to 2016–17

   record, resulting in the shortest season to since the fishery started. Median and 90%ile scaled lengths ... show no trend on the Shelf, Slope or North. Age frequencies show no uniform trend and are probably ... time in all three locations. The catch limits for macrourid and skates are dictated by CM 41-09 ... . Because the areas open to fishing will change in 2018, with the implementation of the Ross Sea region ...

   Meeting Document : WG-FSA-17/07 : Auteur(s): S. Parker and S. Mormede

9. Uncertainty in green weight estimates from Norwegian krill fishing vessels

   an issue raised repeatedly within CCAMLR for a number of years, resulting in a modification to the C1 ... krill fishery for Euphausia superba in the Antarctic. These vessels have in recent years contributed to ... form implemented for the fleet in 2012. There are at present three Norwegian vessels operating in the ... therefore be important contributions to an estimate of total uncertainty in catch weight. Here, we present ...

   Meeting Document : WG-EMM-13/41 : Auteur(s): G. Skaret and T. Knutsen (Norway)

10. NEW REGIONAL-SCALE SURVEYS OF THE ADÉLIE PENGUIN BREEDING POPULATION IN PRYDZ BAY: A STEP TOWARDS IMPROVED ESTIMATION OF KRILL CONSUMPTION IN EAST ANTARCTICA

    conducted 30 years ago. To understand current levels of prey consumption in east Antarctica it is therefore ... Abstract:  Understanding circumpolar penguin abundance is critical for developing realistic ... . A review of historical Adélie penguin survey data in east Antarctica revealed Prydz Bay as a ... priority region for new survey work to improve population estimates. Prydz Bay is considered to have the ...

    Meeting Document : WG-EMM-11/32 : Auteur(s): C. Southwell, J. McKinlay, K. Newbery, L. Emmerson and J. Lieser (Australia)

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