Resultados de la búsqueda
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An analysis of early change in the blubber thickness of minke whales as an indicator of krill availability
females. Relation between thickness and foetus length for the latter was also detected. After adjustment ... Abstract: Data on blubber thickness measured on 26,751 minke whales caught in the IWC Areas III ... for these factors, considerable yearly variations were shown in the thickness in December, in which 12 ... for seven years for increment between December and February with a fair agreement between the sexes ...
Meeting Document : WG-CEMP-87/18 : Autor(es): Y. Shimadzu (USA)
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FLAG STATUS OF SOME VESSELS ON THE NCP-IUU VESSEL LIST
2010 after calling at Penang, Malaysia. The vessel was reported by Singapore authorities to be flagged ... Abstract: FLAG STATUS OF SOME VESSELS ON THE NCP-IUU VESSEL LIST In June 2010, the EU forwarded a ... report that Togo had instigated proceedings to deregister the Togolese-flagged fishing vessels Bigaro ... , Carmela, Typhoon-1, Chu Lim, Rex and Zeus which are all included on the NCP-IUU Vessel List. 2. According ...
Meeting Document : SCIC-10/04 : Autor(es): Secretariat
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Has krill fishing the potential to adversely affect recruitment in Antarctic notothenioid fishes?
Abstract: A few years after krill (Euphausia superba) fishing had started in 1972/73, it became ... by-catch in fisheries targeting krill. The species composition of fish by-catch in krill fisheries is ... well-known from Polish investigations in the late 1970s and the 1980s and from Japanese, Ukrainian, and ... Russian investigations in the 1990s, 2000s and 2010s. However, only a few investigations in the 1990s and ...
Meeting Document : WG-FSA-14/66 : Autor(es): K.-H. Kock (Germany) and C.D. Jones (USA)
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Seamount-specific biomass estimates from SSRU 88.2H in the Amundsen Sea derived from mark-recapture data
calculated for SSRU 88.2H as a whole. The analyses indicate that: Fish seldom move among seamounts within the ... on almost every seamount in every year and usually in proportion to the level of tagging on the ... seamount in the previous year. Trends in local biomass estimates for individual seamounts and SSRU 88.2H ... overall showed a decline in biomass through time with a slight increase in biomass since 2012. The pattern ...
Meeting Document : WG-FSA-14/58 : Autor(es): S.J. Parker and S. Mormede (New Zealand)
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A RE-APPRAISAL OF THE TOTAL BIOMASS AND ANNUAL PRODUCTION OF ANTARCTIC KRILL
abundance has fluctuated. To estimate krill biomass at the end of last century we combined the KRILLBASE map ... standardised net sampling methodology but they integrate over the period 1926-2004, during which krill ... of relative krill density around Antarctica with the most recent, acoustics-derived, value for the ... CCAMLR Synoptic Survey of the Scotia Sea area (37.3 Mt). Thus the CCAMLR 2000 survey area contains 28% of ...
Meeting Document : WG-EMM-08/17 : Autor(es): A. Atkinson (United Kingdom), V. Siegel (Germany), E.A. Pakhomov (South Africa), M.J. Jessopp (United Kingdom) and V. Loeb (USA)
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Hatching season and growth of Pleuragramma antarcticum larvae near the Antarctic peninsula in austral summer 1993/94
after hatching, P. antacticum seems to be hatched during June- July, because the mean number of ... Abstract: Hatching season and larval growth of Pleuragramma antacticum in the water off Antarctic ... Peninsula were determined by the examination of growth increments in otoliths. The samples were collected by ... (54 inds. out of 77 fish larvae) in ichthyoplankton samples, and occurred mainly in cold water of the ...
Meeting Document : WG-EMM-96/65 : Autor(es): Cha, S.S., Lee, T.W., Kim, S.
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A revised estimate of short-term yield for the mackerel icefish (Champsocephalus gunnari) off Heard Island based on a trawl survey in 1998
Shell Bank) in the vicinity of Heard Island enabled a revised estimate of yield for the coming 2 seasons ... in 1999 and 2000. While the abundances of icefish are lower in 1998 than in 1997, the Age 3 and Age 4 ... cohorts are still sufficiently strong to provide for a yield greater than estimates of the long term ... precautionary yield. Estimates of yield for the Heard Island Plateau population are 732 tonnes for 1999 and 518 ...
Meeting Document : WG-FSA-98/54 : Autor(es): A. Constable and D. Williams (Australia)
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Use of a population model to assess the impact of longline fishing on wandering albatross populations
developed to simulate population trends over time, using demographic parameters from the population at ... Possession Island Crozets, during 1968 to 1986. The simulation results portray a population decreasing at a ... parameters indicate that both adult and juvenile mortality are contributing to the decrease. Wandering ... ; such deaths are likely to be relatively more frequent among young, naive birds. The model is used to ...
Meeting Document : WG-IMALF-94/08 : Autor(es): Coleen L. Moloney, John Cooper, Peter G. Ryan and W. Roy Siegfried (South Africa)
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Estimation of the fishery–krill–predator overlap
reduced overlap in Subarea 48.1 after 1990. The RPO and Schroeder index indicated a greater increase in ... Abstract: Work undertaken during the intersessional period has enabled better use of the krill ... fishery data, and a comparison between the three existing indices of fishery-krill-predator overlap used ... by CCAMLR (catch in the Critical Period and Distance [CPD], Agnew-Phegan index, and Realised ...
Meeting Document : WG-EMM-99/11 : Autor(es): Secretariat
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Breeding numbers and success of Eudyptes penguins at Marion Island, and the influence of arrival of adults
significantly correlated with that of females. Although both species had low weights on arrival after the El ... Penguins, over 26 and 22 years respectively, suggesting over-wintering conditions may influence the ... proportions of birds breeding. For both species the time of arrival of females for breeding, and for ... Rockhopper Penguins the mass of females on arrival, was significantly related to breeding success. Therefore ...
Meeting Document : WG-EMM-05/38 : Autor(es): R.J.M. Crawford, J. Cooper, B.M. Dyer and L.G. Underhill (South Africa)