Résultats de la recherche
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On reproduction of Electrona carlsbergi Tåning
Abstract: A subject of the present study is Electrona carlsbergi from the Atlantic sector of the ... Southern Ocean. Results from histological examination of gonads are presented. From materials available it ... has been ascertained that Electrona carlsbergi breeds in the notal zone. The ripening of females ... begins at body length of 76-78 mm. Vitellogenesis is asynchronous. Vitelline eggs have a diameter from ...
Meeting Document : WG-FSA-90/20 : Auteur(s): G.P. Mazhirina (USSR)
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Technical Specifications of Fish Heaven: version 2.1.5
Abstract: These are the technical specifications of the software Fish Heaven: version 2.1.5. The ... specifications include a description of the object structure of the model, the process structure of the model and ... a mathematical description of the model. Author(s): Ball, I. Title: Technical Specifications of ...
Meeting Document : WG-FSA-SAM-04/15 : Auteur(s): Ball, I.
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Nine years of tag-recapture in CCAMLR Statistical Subarea 48.3 – Part I: General data characterisation and analysis
Abstract: This paper presents an analysis of data gained from a nine-year tagging programme of ... information gained about biology, growth and movement of Patagonian toothfish, and explains the overlap of ... tagging length distributions with those of the landed catch and survey data. The characterisation of tag ... ) Title: Nine years of tag-recapture in CCAMLR Statistical Subarea 48.3 – Part I: General data ...
Meeting Document : WG-SAM-14/35 : Auteur(s): M. Soeffker, C. Darby and R.D. Scott (United Kingdom)
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Estimating abundance of Antarctic fur seals at South Georgia
Abstract: This paper presents a description of the statistical approach developed to estimate ... abundance of Antarctic fur seals at South Georgia. The estimate is based on photographic counts of all the ... total population size carrying over multiple sources of uncertainty from estimates of proportions of ... Kingdom) Title: Estimating abundance of Antarctic fur seals at South Georgia Approval: Approved ...
Meeting Document : WG-EMM-14/09 : Auteur(s): J. Forcada, I.J. Staniland, A.R. Martin, A.G. Wood and P.N. Trathan (United Kingdom)
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Report on the survey in Subarea 48.2 in 2015 (the first year of the planned 3-year-old investigations)
longliner SIMEIZ. 29 sets were completed during the survey. Altogether 157 specimens of Dissostichus mawsoni ... and 21 specimens of Dissostichus eleginoides were tagged. 124 otolith pairs of Dissostichus mawsoni ... and 87- Dissostichus eleginoides were collected. The average sizes of Dissostichus mawsoni from the ... catches made up about 156 cm. Investigated maturity stages and stomach composition of Dissostichus spp ...
Meeting Document : WG-FSA-15/43 Rev. 1 : Auteur(s): Delegation of Ukraine
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Monitoring and managing the effects of environmental change on toothfish assessments
Abstract: This paper presents a ‘first-step’ proposal for CCAMLR to consider the effects of ... environmental conditions that are maintained over a number of years, which includes the effects of global ... climate change. The effects of environmental variability and change on toothfish population dynamics and ... productivity are largely unknown and are difficult to predict given our current understanding of the Southern ...
Meeting Document : WG-SAM-18/22 : Auteur(s): M. Pinkerton, A. Dunn, S. Mormede and S. Parker
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Uncertainty in reported geographical distribution and weight of krill catches from Norwegian krill fishing vessels operating continuous fishing systems
of actions that would facilitate further consideration and clarification of these technical issues ... the outcome of the action steps including onboard experiments and analyses of historical catch data ... . Experiments on board ‘Saga Sea’ showed that there is an average delay of approximately 9 minutes between the ... relative standard deviation of 8-29% should be expected depending on vessel and specific holding tank ...
Meeting Document : WG-EMM-18/22 : Auteur(s): G. Skaret, T. Knutsen, F. Grebstad and O.A. Bergstad
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Stomach contents of sub-adult Antarctic toothfish (Dissostichus mawsoni) from the western Ross Sea, Antarctica
Abstract: The stomach contents of 190 sub-adult (51-100 cm TL) Antarctic toothfish (Dissostichus ... primarily piscivorous, feeding on a wide variety of small to medium sized fish. Icefish (Channichthyidae ... (Muraenolepididae) were also important. Glacial squid (Psychroteuthis glacialis) were found in about 20% of stomachs ... of the Ross Sea. Although the study provides an important comparison of diet of adult and sub-adult ...
Meeting Document : WG-FSA-06/27 : Auteur(s): D.W. Stevens (New Zealand)
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Report of the South Georgia groundfish survey (Subarea 48.3) in January 2006
the FPRV Dorada. Sixty-three random trawls were undertaken, with 12.3 tonnes of mackerel icesfish ... caught, which produced biomass estimates of between 91000 and 117000 tonnes. The catches were dominated ... by fish of 20-25 cm (putative 2+), but unusually large numbers of fish of ~ 50 cm were also caught to ... the N and NE of South Georgia. Fish in spawning condition (Stage IV) were found at the eastern end of ...
Meeting Document : WG-FSA-06/51 : Auteur(s): M.A. Collins, C. Jones, J. Clark. S. Fielding, J. Slakowski, T. North, W. Reid and J. Watts (United Kingdom)
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Counts of surface-nesting seabirds breeding at Prince Edward Island, summer 2001/02
Abstract: The first midsummer survey of surface-nesting seabirds at Prince Edward Island was ... concerns about the impacts of longline fishing mortality on various albatrosses and giant petrels, there ... was no evidence that populations of these species had decreased. Indeed, the estimate of wandering ... Marion Island as supporting the largest single-island populations of this species. Species that underwent ...
Meeting Document : WG-EMM-03/9 : Auteur(s): P.G. Ryan, J. Cooper, B.M. Dyer, L.G. Underhill,R.J.M. Crawford and M.N Bester (South Africa)