Resultados de la búsqueda
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Histopathology of Antarctic krill (Euphausia superba) bearing black spots
Abstract: In Antarctic krill, Euphausia superba, sampled by a Japanese scientific observer ... onboard a krill fishing vessel in the winter of 2003 and 2006 in the South Georgia region, the Antarctic ... observations revealed that the black spots were melanized nodules. A single melanized nodule often contained ... always accompanied by a tumor-like mass of unknown large heteromorphic cells, which seemed to be derived ...
Meeting Document : WG-EMM-07/29 : Autor(es): S. Miwa, T. Kamaishi, T. Matsuyama, T. Hayashi and M. Naganobu (Japan)
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Male krill grow fast and die young
). This pattern was reproduced by a model simulation that assumed faster growth and a shorter life span ... of males from the field (net collected data and penguin diet data) showed a decline in proportion of ... males when several years of low recruitment followed a recruitment pulse. These results lead us to ... conclude that male krill grow faster and have a shorter lifespan than females in the natural environment ...
Meeting Document : WG-EMM-07/P6 : Autor(es): S. Kawaguchi, L.A. Finley, S. Jarman, S.G. Candy (Australia), R.M. Ross, L.B. Quetin (USA), V. Siegel (Germany), W. Trivelpiece (USA), M. Naganobu (Japan) and S. Nicol (Australia)
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Predicting changes in the Antarctic krill Euphausia superba population at South Georgia
abundance are essentially unknown. A conceptual model, developed froll1 quantitative measures of krill ... with model predictions, in 1998 there was a serial change in krill population structure, low krill ... December to 42 mm in March was apparently a result of the transport of krill into the region. This is the ... physical and biological processes, predators have a potential key role as indicators of Southern Ocean ...
Meeting Document : WG-EMM-99/37 : Autor(es): K. Reid, K.E. Barlow, J.P. Croxall and R.I. Taylor (UnitedKingdom)
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CONTINUING CCAMLR’S FIGHT AGAINST IUU FISHING FOR TOOTHFISH EXECUTIVE SUMMARY OF THE REPORT BY TRAFFIC INTERNATIONAL AND WWF AUSTRALIA
executive summary of a recent, soon to be published report produced by TRAFFIC International in conjunction ... with WWF Australia that presents a trade-based assessment of toothfish catch for the period of 2003 ... -2007 with a view to provide an indication of the extent of the IUU catch. The report highlights that in ... opportunities for IUU toothfish to find a market. The report also provides a series of recommendation that the ...
Meeting Document : CCAMLR-XXVII/BG/38 : Autor(es): Submitted by IUCN
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BEACH DEBRIS SURVEY AND INCIDENCE OF ENTANGLEMENT OF ANTARCTIC FUR SEALS ARCTOCEPHALUS GAZELLA AT SIGNY ISLAND, SOUTH ORKNEY ISLANDS 2007/2008
were observed with neck collars formed from fisheries related debris. Beach surveys recovered a total ... ). There was a decrease in the number of plastic packaging bands with only two found in the current season ... (both of which had been cut open), marking a break in the otherwise continued rise in packaging bands ... the longevity of plastics and other materials with a high resistance to degradation in the marine ...
Meeting Document : WG-FSA-08/26 : Autor(es): M.J. Dunn and C.M. Waluda (UK)
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Pup production and distribution of breeding Antarctic fur seals (Arctocephalus gazella) at South Georgia
Abstract: A census of the breeding population of Antarctic fur seals (Arctocephalus gazella) at ... at the breeding grounds during the pupping period, together with corrections for the likelihood of a ... female being ashore at a census and for pregnancy rate (71 % in 1990/91), pup production was estimated as ... long-term study sites probably because of a short term reduction in food availability. Data from these ...
Meeting Document : WG-CEMP-92/39 : Autor(es): I.L. Boyd (United Kingdom)
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Using compact video camera technology for rapid deep-sea benthic habitat assessment
Abstract: A compact, autonomous deep sea video system designed and constructed by the Australian ... Ocean benthos, has a wider application in deep-sea marine research. The use of the system as a drop ... camera for broad-scale and rapid deep-sea benthic habitat assessment, during a recent AAD marine science ... a drop camera included: 1. Rapid: Three, two minute replicates of footage at 1000m, including ...
Meeting Document : WG-EMM-10/24 : Autor(es): G.P. Ewing, R. Kilpatrick, A.J. Constable and D.C. Welsford (Australia)
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Is toothfish catch correlated with the catch of vulnerable benthic invertebrate taxa?
benthic invertebrate catch rates at a longline segment level. Analysis of the data available showed no ... a longline segment, approximately 1.2 km. This supports conclusions of previous work finding no ... relationship between total VME taxa weight and toothfish catch at the scale of a longline set, up to 10km. Our ... data were too limited for a robust comparison among fishing areas. Further studies at intermediate ...
Meeting Document : WG-EMM-10/27 : Autor(es): S.J. Parker and M.H. Smith (New Zealand)
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Does large-scale ocean circulation structure life history connectivity in Antarctic toothfish (Dissostichus mawsoni)?
Abstract: A multi-disciplinary approach incorporating otolith chemistry, age data and numerical ... Lagrangian particle simulations indicated a single, self-recruiting population of Antarctic toothfish ... (Dissostichus mawsoni) in the Southeast Pacific Basin (SPB) and Ross Sea, with a life history structured by the ... : successfully spawning fish spend only a part of their adult life history in the Ross Sea; areas in the eastern ...
Meeting Document : WG-FSA-12/P02 : Autor(es): J. Ashford, M. Dinniman, C. Brooks, A. Andrews, E. Hofmann, G. Cailliet, C. Jones and N. Ramanna
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Distribution and biology of grey notothen (Lepidonotothen squamifrons) around South Georgia and Shag Rocks (Southern Ocean) CCAMLR Subarea 48.3.
Abstract: Lepidonotothen squamifrons (Family Nototheniidae) is a demersal Southern Ocean endemic ... fish. Historically a commercially targeted species and common as bycatch, changes to CCAMLR fisheries ... recognisable cohort progression and a trend of increasing size over time indicating a potential recovery of the ... for the Indian Ocean basin population. Stomach content analysis (2005- 2012) showed a varied diet ...
Meeting Document : WG-FSA-12/34 : Autor(es): S. Gregory, J. Brown and M. Belchier (United Kingdom)