Search results
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THE ROSS SEA AS A UNIQUE EVOLUTIONARY SITE
Abstract: The case is made that the Ross Sea is an evolutionary site on par with those of the ... Antarctic marine groups. The Ross Sea fish fauna includes 95 species of fishes, dominated by 61 species of ... notothenioids, an endemic perch-like group. Relative to fish fauna in warmer regions, the nature of the Ross Sea ... fish diversity overshadows the absolute numbers of species. Antarctic notothenioid fishes, living at ...
Meeting Document : WG-EMM-09/13 : Author(s): J.T. Eastman and D.G. Ainley (USA)
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Krill biomass estimates for South Georgia, December and January 1996/97
conducted within two 80 x 100 km areas over the shelf-break to the north-east and north-west of South ... Georgia during December/January 1996/97. Netting suggested that the mean lengths of krill within the ... box-specific krill target strength (TS) values of-38.89 and-38.59 dB kg-1. Acoustic signals believed ... to be attributable to krill were identified on the basis of the difference between mean volume ...
Meeting Document : WG-EMM-97/48 : Author(s): Goss, C., Watkins, J.L., Brierley, A.S.
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Krill CPUE standardisation and comparison with acoustic data based on data collected from Chinese fishing vessels in Subarea 48.1
Abstract: The usability of CPUE data as Antarctic krill abundance index was a widely discussed ... than catch per day data. The veridical distribution and movement of krill could be important source of ... differences between CPUE and acoustic data. The uncertainties and biases of CPUE data implied that CPUE used ... to indicate the krill stock abundance should be very caution. However, the dynamics of CPUE could ...
Meeting Document : WG-EMM-17/41 : Author(s): Y. Ying, X. Wang, J. Zhu and X. Zhao
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Preliminary results from the International Synoptic Krill Survey in Area 48, 2019
presented. Of the six vessels that participated in the survey, this report provides methods and preliminary ... results from four (vessels from the Association of Responsible Krill harvesting companies (ARK), Norway ... , Ukraine, and the United Kingdom), covering 8719 n. miles of acoustic transects and occupying 149 sampling ... distribution maps of krill NASC (nautical area scattering coefficient). A preliminary spatial cluster analysis ...
Meeting Document : WG-EMM-2019/47 : Author(s): G. Macaulay, G. Skaret, T. Knutsen, O.A. Bergstad, B. Krafft, S. Fielding, S.G. Choi, S. Chung, K. Demianenko, V. Podhornyi, K. Vishnyakova, L. Pshenichnov, A. Chuklin, A. Shishman and M.J. Cox
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Growth models for D. eleginoides for the Heard Island plateau region (Division 58.5.2) calibrated from otolith-based length at age data and validated using mark-recapture data
(VP) of sampling lengths. A segmented linear trawl fishing selectivity function was used where the ... upper-arm was estimated, as described elsewhere, from comparisons of longline LF samples to that for ... trawls for seasons where both fishing methods were used. Due to the small number of fish in the aged ... sample that were older than 20 years the general trend in the data of length with age did not exhibit ...
Meeting Document : WG-FSA-05/64 Rev. 1 : Author(s): S.G. Candy, T. Lamb, A.J. Constable and R. Williams (Australia)
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Catch removals due to killer and sperm whale interactions across sub-Antarctic fisheries
investigated the extent of this conflict in multiple commercial Patagonian toothfish (Dissostichus eleginoides ... , and Heard Island and McDonald Islands (Indian sector of the Southern Ocean) fisheries, statistical ... . The results indicated that these removals were large, totalling more than 6,600 t of toothfish between ... 2009 and 2016 with an overall annual mean of 837 t [95% CI 480-1,195 t], comprised of 317 t [232-403t ...
Meeting Document : WG-FSA-2019/33 : Author(s): P. Tixier, P. Burch, F. Massiot-Granier, P. Ziegler, D. Welsford, M.-A. Lea, M.A. Hindell, C. Guinet, S. Wotherspoon, N. Gasco, C. Péron, G. Duhamel, R. Arangio, R. Tascheri, S. Somhlaba and J.P.Y. Arnould
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By-catch observation during krill fishing cruise (48.1, 48.2 Statistical Subareas, 2011)
Abstract: 359 Antarctic krill catches were analysed for by-catch, it took 48.5% of observed ... catches and 31.3% of total catches. Fish by-catches were usual in the sector 48.1 (89.1% of cases); the ... most of by-caught fishes belonged to families Nototheniidae (NOX) (66.3%). Fish by-catches in the ... sector 48.2 were recorded in 50% examined catches; the most frequent were fishes of families Myctophidae ...
Meeting Document : WG-FSA-11/41 : Author(s): K. Vyshniakova (Ukraine)
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Executive Secretary’s Report, 2018, including Fourth Year Implementation Report for the Secretariat’s Strategic Plan (2015–2018)
Abstract: This report is the last of four describing the activities of the Secretariat under the ... 2015–2018 Strategic Plan. Highlights of the year are presented, which include the development of a new ... Strategic Plan for the next 4 years 2019–2022. Future reports will be against the format of the new ...
Meeting Document : CCAMLR-XXXVII/05 : Author(s): Executive Secretary
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Proposal for further trials aimed at reducing Macrourus spp. by catch on autoliners targeting D. eleginoides with longlines around South Georgia
Abstract: IW longlines are effective in reducing the bycatch of birds in toothfish fisheries, but ... by putting the line closer to the seabed they increase the bycatch of macrourids and rajids ... . Experiments reported elsewhere demonstrate that some of this effect can be mitigated by the use of fish rather ... . All systems will have sink rates of at least 0.3 m.s-1. Comments on the experimental protocol are ...
Meeting Document : WG-FSA-07/30 : Author(s): Delegation of the United Kingdom
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Fish stock assessment survey in Subarea 48.3, 2004
Abstract: This report describes the activities and preliminary results of the 9th UK fish stock ... of acoustic methods for the determination of icefish biomass could be undertaken. Following the ... recommendations of the CCAMLR subgroup on fisheries acoustics (WG –SFA) emphasis was to be put on obtaining ... information on the target strength and length composition of the pelagic component of the icefish biomass. A ...
Meeting Document : WG-FSA-04/85 : Author(s): M. Belchier, M. Purves, M. Collins, S. Hawkins, T. Marlow, R. Mitchell, J. Szlakowski and J. Xavier (United Kingdom)