Résultats de la recherche
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A comparison of Antarctic krill (Euphausia superba Dana) caught by nets and taken by macaroni penguins (Eudyptes chrysolophus Brandt): evidence for selection?
, we examined the potential selection of different length and maturity stages of Antarctic krill ... probability of obtaining length-frequency distributions of krill different from that obtained from the net ... distributions that were statistically different from the original distribution of krill caught in nets on 76 out ... of 100 trials. Nevertheless, these differences were smaller than those found between the penguin ...
Meeting Document : WG-EMM-96/08 : Auteur(s): Croxall, J.P., Hill, H.J., Trathan, P.N., Watkins, J.L.
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Age determination of the Antarctic fishes Champsocephalus gunnari and Notothenia rossii from South Georgia
Abstract: Foremost in the elucidation of accurate population dynamics parameters in fish is a ... necessity for an errorless estimation of age. Age determination can provide basic life history information ... used annual rhythmic deposition in calcified tissues as time marks but, due ts the lack of distinct ... periodicity in Antarctic hydrographic conditions, age determination of Antarctic fish has proven to be ...
Meeting Document : SC-CAMLR-VI/BG/43 : Auteur(s): R. Radtke (USA)
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Updated impact assessment framework to estimate the cumulative footprint and impact on VME taxa of bottom longline fisheries in the CCAMLR Area
estimate the likely impacts of bottom longline fishing on Vulnerable Marine Ecosystems (VMEs), as required ... by Conservation Measure 22-06. The most recent iteration of the impact assessment (Sharp 2010) was ... assessments for all gear types combined at the scale of entire fisheries. Both WG-SAM and WG-EMM gave specific ... account of the specific recommendations of WG-SAM and WG-EMM 2010 and incorporating new information ...
Meeting Document : WG-FSA-10/31 : Auteur(s): B.R. Sharp (New Zealand)
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Diet variability and reproductive performance of macaroni penguins (Eudyptes chrysolophus) at Bird Island, South Georgia
Abstract: We analysed summer diet and fledging mass of macaroni penguins Eudyptes chrysolophus ... 2010. Crustaceans were the main prey accounting for over 90 % of the diet by mass. Antarctic krill ... (Euphausia superba) was the main prey in 17 out of 22 years. Amphipods (Themisto gaudichaudii) were the main ... . frigida) in 2000. There was no clearly dominant prey group in 1999. The five-year average proportion of E ...
Meeting Document : WG-EMM-12/17 : Auteur(s): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan (United Kingdom)
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Reports on abundance and biological information of toothfish in Division 58.4.4a & b by Shinsei Maru No. 3 in 2012/13 season
Abstract: A survey was conducted to collect data of stock status and various biological ... information of toothfish in SSRUs C and D of Division 58.4.4a & b (Ob Lena Banks) from April 25 to May 22 ... , 2013. A total of 64 research hauls using normal trotline system were made in SSRUs C and D. Total catch ... of Dissostichus eleginoides (excluding those tagged and released) was 31.1 tonnes in the survey area ...
Meeting Document : WG-SAM-13/20 : Auteur(s): K. Taki, T. Ichii, T. Iwami and M. Kiyota (Japan)
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Revised reports on abundance and biological information of toothfish in Division 58.4.4 a & b by Shinsei maru No. 3 in 2012/13 season
Abstract: A survey was conducted to collect data of stock status and various biological ... information of toothfish in SSRUs C and D of Division 58.4.4a & b (Ob Lena Banks) from April 25 to May 22 ... , 2013. A total of 64 research hauls using normal trotline system were made in SSRUs C and D. Total catch ... of Dissostichus eleginoides (excluding those tagged and released) was 31.1 tonnes in the survey area ...
Meeting Document : WG-FSA-13/34 : Auteur(s): K. Taki, T. Ichii, T. Iwami and M. Kiyota (Japan)
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Fatty acid and stable isotope analyses to identify diets of Antarctic toothfish caught in February–March 2013 in the southern Ross Sea (88.1.K) and the eastern Antarctic Sea (58.4.1.C)
88.1.K of the southern Ross Sea and 58.4.1.C of the eastern Antarctic Sea, their fatty acid (FA ... ) composition and stable carbon and nitrogen isotope ratios were determined and compared to those of bycatch ... species and stomach samples. Sampling efforts were made during a longline survey of pre-recruit toothfish ... profiles in muscle tissue of Antarctic toothfish, bycatch specimen (Channichthyidae), and icefish in the ...
Meeting Document : WG-FSA-13/42 : Auteur(s): I. Yeon, Y.J. Kwon, S.G. Choi, D.W. Lee and C.-K. Kang (Republic of Korea)
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Proposed work schedule for 2014 meeting of WG-EMM
Description / Abstract: This is the proposed work schedule for 2014 meeting of WG-EMM. ... Proposed work schedule for 2014 meeting of WG ... 3. Wed(16 Jul) Remaining items (4, 5, 6) and Preparation of the report Thu (17 Jul) Preparation ... of the report Fri (18 Jul) Item 7 (Adoption of the report) ...
Document : Site Section: Meetings
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Research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.1
Abstract: The current season (2014/15) is the final one of the first three-season research which ... by all effective vessels were analyzed for the improvement of stock assessment in the research blocks ... available, SSRU 58.4.1 C may be also one of the important spawning grounds for D. mawsoni from the degrees ... in development of GSI in summer comparable with those in the north of Subarea 48.6 and Banzare Bank ...
Meeting Document : WG-SAM-15/05 : Auteur(s): Delegation of Japan
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Results of the 2015 multi-Member longline survey for toothfish in the northern Ross Sea region (Subarea 88.2 SSRUs A–B) and proposal for 2016 operations
Abstract: The first year of a two-year and multi-member research survey using standardised ... longline gear to sample toothfish populations was carried out in the northern areas (60°‑ 66° S) of SSRUs ... of 109.1 t of Antarctic toothfish and two Patagonian toothfish (0.029 t) were caught. Toothfish catch ... . Age composition of the catch as predicted by the spatial population model was similar to that observed ...
Meeting Document : WG-FSA-15/32 : Auteur(s): S.J. Parker, R.J.C. Currey (New Zealand), M. Söffker, C. Darby (United Kingdom), O. Godø (Norway) and A. Petrov (Russia)