Search results
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Direct ageing of Antarctic krill (Euphausia superba) – potential utility of eyestalk sections for age determination
Abstract: We outline a method for the direct determination of age in Antarctic krill (Euphausia ... endocuticle layer of the eyestalks and gastric mill in decapod crustaceans. Here we report on a preliminary ... proof of concept study using several known age krill grown under controlled conditions at the Australian ... performed. First, longitudinal sections of the eyestalk from known age krill (2+ and 3+ years old) were ...
Meeting Document : WG-EMM-15/45 : Author(s): C. Reiss (USA), R. Kilada (Canada) and S. Kawaguchi (Australia)
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Changing status of three notothenioid fish at the South Shetland Islands (1983–2016) after impacts of the 1970–80s commercial fishery
prevalence of three species, Notothenia rossii, Gobionotothen gibberifrons and N otothenia coriiceps in ... 2007 and 2012 around the South Shetland Islands: (1) continued increase in the abundance of N. rossii ... ; (2) further decline in G. gibberifrons recruitment evidenced by low proportions of juvenile fish; and ... (3) a high abundance of N. coriiceps. Reasons for lack of recovery in G. gibberifrons remain obscure ...
Meeting Document : WG-FSA-17/P01 : Author(s): E. Barrera-Oro, E. Marschoff and D. Ainley
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How trophic dynamics of adult Antarctic krill Euphausia superba responses to the condition of no ice in the water during the winter: a case study at South Georgia?
overwintering of krill in the Southern Ocean. The information on trophic variation of krill under ice-free ... waters during the winter can also provide the insight for understanding the response of krill to global ... diet of adult krill with size and month during the winter season (June to September 2016) at the South ... N values between sexes of krill. Nitrogen isotope signatures suggested increasing carnivory with ...
Meeting Document : WG-EMM-2019/P04 : Author(s): G.P. Zhu, H.T. Zhang, B. Deng and Q.Y. Yang
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Results of a hydroacoustic survey of Antarctic krill populations in CCAMLR Division 58.4.1 carried out in January to April 1996
CCAMLR Division 58.4.1 for the purposes of estimating overall biomass (B0). The krill biomass in the area ... surveyed (873,000 km2) was estimated to be 6.67 million tonnes with a CV of 27%. Krill were more abundant ... in the west of the survey area 800-1200E than in the 120°-150°E region. The majority of the krill ... detected were found in the top 80 metres of the water column. Author(s): Higginbottom, I., de la Mare, W ...
Meeting Document : WG-EMM-96/28 : Author(s): Higginbottom, I., de la Mare, W., Pauly, T., Nicol, S.
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Use of current velocity data from fram to investigate the large scale transport of krill in the Scotia Sea
Abstract: Current velocity data from a single time realisation of the FRAM model are presented ... for particular areas of the Scotia Sea. The regions are based on the CCAMLR sub-areas and also include ... boundaries over the upper 250m of the water column. These have been combined with estimates of krill density ... and standing stocks to consider the large scale flux of krill through the regions and estimate ...
Meeting Document : WS-Flux-94/05 : Author(s): E.J. Murphy (United Kingdom)
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Homogeneity of body length composition of Antarctic krill within the commercial haul
Abstract: The homogeneity of krill length composition in commercial trawl catches (hauls) was ... investigated by comparing length compositions from different parts of the same haul. There was no significant ... difference (P>0.05) in 53 out of 60 hauls. Therefore it is concluded that sampling from one part of the ... haul provides a reasonable estimate of length composition in the entire haul as a whole. In contrast to ...
Meeting Document : WG-KRILL-90/11 Rev1 : Author(s): T. Ichii (Japan)
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Reconciling theoretical versus empirical target strengths of krill; effects of phase variability on the distorted wave Born approximation
Abstract: A model was recently proposed to predict the target strengths (TS) of Antarctic krill ... ]. Based on the distorted wave Born approximation (DWBA), the model depends upon the coherent summation of ... scattering from elements of a discretized bent cylinder. It was empirically validated at 120 kHz near ... , the authors noted that the differences were not entirely due to noise. In this study, the accuracy of ...
Meeting Document : WG-EMM-02/50 : Author(s): D.A. Demer and S.G. Conti (USA)
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Update of the activities of the SCAR krill action group (SKAG) since last year’s WG-EMM
Abstract: The first annual meeting of the SCAR Krill Action Group (SKAG) met in Concarneau France ... on June 15 th and 16 th, 2019. The meeting focused on several topics including the identification of ... important knowledge gaps in krill research that could provide data in support of the management needs of ... CCAMLR. Author(s): B. Meyer and C. Reiss Title: Update of the activities of the SCAR krill action group ...
Meeting Document : WG-EMM-2019/12 Rev. 1 : Author(s): B. Meyer and C. Reiss
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Estimation of the incidental capture of seabird species in commercial fisheries in New Zealand waters, 2000/01
Abstract: Ministry of Fisheries observers reported 1236 seabird captures from fishing operations ... novaezelandiae) trawl fisheries accounted for 94% of the 701 seabird captures in observed trawl fisheries ... . Observed incident rates in longline fisheries were highest in the ling longline fishery: 24% of observed ... ling autoline sets caught seabirds, compared with 6% of observed chartered tuna longline sets caught ...
Meeting Document : WG-FSA-04/55 : Author(s): S.J. Baird (New Zealand)
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THE CONVENTION ON THE CONSERVATION OF ANTARCTIC MARINE LIVING RESOURCES (CCAMLR) AND THE ECOSYSTEM APPROACH As published in the International Journal of Marine and Coastal Law, Vol. 23, No. 3, 2008
Abstract: Lack of adequate governance of the high seas areas has resulted in the continued ... degradation of ocean and marine habitats. Ȁ e ecosystem approach, which comprises integrated, precautionary ... incorporation of an ecosystem approach to the conservation and management of marine living resources, and ... compliance levels, it has attempted to balance conservation objectives with the maintenance of commercial ...
Meeting Document : CCAMLR-XXVII/BG/25 : Author(s): Submitted by ASOC