Search results
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Histopathology of Antarctic krill, Euphausia superba, bearing black spots
Abstract: Small black spots have been noticed on the cephalothorax of Antarctic krill, Euphausia ... superba, since January, 2001. To study the nature of the black spots, the krill were sampled in the winter ... of 2003, 2006, and 2007 in the South Georgia region, the Antarctic Ocean. Histological observations ... revealed that the black spots were melanized nodules that were composed of hemocytes surrounding either ...
Meeting Document : WG-EMM-08/P09 : Author(s): S. Miwa, T. Kamaishi, T. Matsuyama, T. Hayashi and M. Naganobu
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Biology, distribution and abundance of Antarctic krill (Euphausia superba) and by-catch
collected from 34 stations of fishing area 58 in Indian Ocean sector of Antarctic region between lat.57°53 ... Sampada for the study of biology, distribution and abundance. The samples were collected for a period of ... 18 days from 26th January to 12th February '96. Three types of gears were used viz. Isaacs Kidd ... most abundant size in the fishing area 58. The average sex ratio of male and female Euphausia superba ...
Meeting Document : WG-EMM-98/37 : Author(s): A. Anrose, Z. Klusek, M.K.R. Nair and M. R. Bhoopendranath (India)
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Bias in acoustic biomass estimates of Euphausia superba Dana to diel vertical migration
Abstract: The diel vertical migration of Antarctic krill (Euphausia superba) can greatly bias the ... results of qualitative and quantitative hydroacoustic surveys which are conducted with a down-looking ... sonar and independent of the time of day. To demonstrate and quantify these negative biases on both the ... estimates of biomass distribution and abundance, a time-depth-density analysis was performed. Data for this ...
Meeting Document : WG-KRILL-93/48 : Author(s): D.A. Demer and R.P. Hewitt (USA)
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Proposal to strengthen monitoring and control of transhipments
gaps in the monitoring of transhipments. Currently, most of the transhipments in the Convention Area ... occur between vessels licensed to fish in the Convention Area and vessels of Non-Contracting parties ... (NCPs). The proposed amendments establish a CCAMLR Record of Carrier Vessels, which may include NCP ... vessel that is not authorised under Conservation Measure 10-02 or included on the CCAMLR Record of ...
Meeting Document : CCAMLR-XXXV/24 : Author(s): Delegations of Australia and the USA
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Conservation of Antarctic pack-ice seals with increasing krill fishing and environmental change
Abstract: The management of Antarctic krill and conservation of its predators requires ... understanding about the compound effects of changing habitats, ecosystem interactions, and fishing practices ... . For Antarctic pack-ice seals, a main group of krill predators, we report the spatial density and krill ... declines consequent on climate change. We find that the WAP has the highest known density of pack-ice seals ...
Meeting Document : WS-MPA-11/24 : Author(s): J. Forcada, P.N. Trathan (UK), P.L. Boveng (USA), I.L. Boyd (UK), D.P. Costa (USA), M. Fedak (UK), T.L. Rogers and C.J. Southwell (Australia)
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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 : Author(s): K. Taki, T. Ichii, T. Iwami and M. Kiyota (Japan)
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THE STRUCTURE AND FUNCTIONING OF MARINE ECOSYSTEM IN ARGENTINE ISLANDS WATERS
structure of marine ecosystem in a poorly investigated coastal area of Argentine Island Archipelago The ... structure and functioning of the local biota has a specific response of environmentally different involved ... elements to a series of limiting factors. Mass phyto- and zoobenthos and macro plankton species accumulate ... toxic heavy metals. The pollution inhibits normal reproduction of Antarctic krill, the population ...
Meeting Document : WG-EMM-11/P5 : Author(s): E.Z. Samyshev
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Standardised CPUE analysis of Antarctic toothfish (Dissostichus mawsoni) fishery in the Ross Sea for the years 1997/98 to 2004/05
) since 1997 in CCAMLR Subareas 88.1 and 88.2. Previously, standardised analysis of toothfish CPUE (catch ... of data from the 2005 season for the Ross Sea (Subarea 88.1 and SSRUs 88.2 A–B) using data sets based ... of the period. We estimate indices using both lognormal generalised linear models and a Tweedie mixed ... addition to extreme ice conditions that limited where lines could be set. None of these factors were ...
Meeting Document : WG-FSA-05/32 : Author(s): A. Dunn and N.L. Phillips (New Zealand)
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A feasibility study for stock assessment of D. mawsoni in the Ross Sea (Subares 88.1 and 88.2) using a tag and recapture experiment
purpose of stock assessment of the Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea. An ... fishery during the last 3 seasons. A good number of tag recoveries have been reported, mainly within the ... event. It is proposed to continue tag releases each season as part of the exploratory fishery for the ... purpose of determining the stock size of D. mawsoni and sustainable yields for the fishery. Ongoing annual ...
Meeting Document : WG-FSA-SAM 03/10 : Author(s): K.J. Sullivan, N.W.McL. Smith, J. McKenzie and S.M. Hanchet (New Zealand)
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SOME FIELD MATERIALS ON AREA AND SEASON OF ANTARCTIC TOOTHFISH SPAWNING
Abstract: On the results of some field materials collected from 2002 till 2008, on the basis of ... length composition analysis of individuals, weight of females’ gonads and sex ratio an attempt was made ... to select locations and periods of Antarctic toothfish mass spawning in some areas of the Pacific ... Ocean and Indian Ocean sectors of the Antarctic. In the Ross Sea area the most probable areas are the ...
Meeting Document : WG-FSA-08/14 : Author(s): V. Prutko (Ukraine)