Résultats de la recherche
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Diet of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea region, Antarctica
Abstract: The diet of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region was ... . Overall, the diet of sub-adult toothfish was similar to that of adult toothfish, with a dominance of ... greater variety of smaller prey than adults, including smaller fishes (such as Trematomus sp., dragonfish ... , mainly Bathydraco spp.), and large decapod prawns (Nematocarcinus). By weight and index of relative ...
Meeting Document : WG-FSA-12/52 : Auteur(s): D.W. Stevens, M.R. Dunn, M.H. Pinkerton and J.S. Forman (New Zealand)
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Using the EPOC modelling framework to assess management procedures for Antarctic krill in Statistical Area 48: evaluating spatial differences in productivity of Antarctic krill
Abstract: Spatially explicit simulation models of the Antarctic marine ecosystem are needed to ... development of a harvest strategy are whether (i) spatial differences in the productivity of krill give rise ... to differential affects on predators in different locations, (ii) movement of krill between locations ... conservation objectives for predators could be affected by those changes. Productivity of krill can be impacted ...
Meeting Document : WG-EMM-06/38 Rev. 1 : Auteur(s): A.J. Constable (Australia)
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Antarctic icefishes (Channichthyidae) – a unique family of fishes – a review
Abstract: Icefish are a family of species unique among vertebrates in that they possess no ... haemoglobin. With the exception of one species, icefish live only in the cold – stable and oxygen – rich ... environment of the Southern Ocean. It is still questionable how old icefish are in evolutionary terms: they ... they are 15 – 20 Ma old and started to evolve some time after the formation of the Antarctic ...
Meeting Document : WG-FSA-04/10 : Auteur(s): K.-H. Kock (Germany)
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Descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 & 88.2 for the years 2000–01 to 2010–11
Abstract: Descriptive analyses of the toothfish tagging programme in Subareas 88.1 and 88.2 are ... updated, including summaries of data for the 2011 season. Overall, a total of 28 458 Antarctic toothfish ... recaptured since 2001. In recent years, most vessels have achieved or exceeded the target tagging rate of one ... toothfish per tonne of catch in the Ross Sea region. Tag recapture data showed that most fish are recorded ...
Meeting Document : WG-FSA-11/46 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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ALLOCATION OF RESEARCH HAULS IN THE EXPLORATORY FISHERIES FOR DISSOSTICHUS SPP. IN SUBAREAS 48.6 AND 58.4 IN 2008/09
account for SSRUs where fishing had not been previously reported, and SSRUs where the number of positions ... replacement) of 5 research hauls per stratum (fished and lightly fished/unfished) for each vessel. Where ... each vessel in each SSRU (position separation distances 7-120 nmiles). A total of 1082 starting ... of Insung No.1 (SSRU 5841C) and Shinsei Maru No.3 (SSRU 5842A) where the setting of research lines ...
Meeting Document : WG-SAM-09/06 : Auteur(s): Secretariat
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Oxygen and carbon stable isotopes in otoliths record spatial isolation of Patagonian toothfish (Dissostichus eleginoides)
otoliths of oceanic fish can resolve water masses and geographic areas, promising a powerful multivariate ... side of a population boundary, and otolith δ18O and δ13C values were measured to see if they could ... distinguish South American-caught fish from those taken in the Antarctic. Values of δ18O and δ13C predicted ... prior evidence of population isolation. Values of δ18O in the otoliths reflected ambient values as well ...
Meeting Document : WG-FSA-08/P03 : Auteur(s): J.R. Ashford and C.M. Jones
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Note on relationship between the Antarctic krill and annual variation of ice edge during 1979 to 1992
Abstract: During 1979 to 1991, relationship between the size of Antarctic krill and the extent of ... the sea ice in the sea area around the South Shetland Islands are described. Mean size of krill near ... . This implies that strong recruitment of small size krill had occurred just after the season with the ... strong ice extent. Interannual fluctuations of the ice extent are known to relate with the strength of ...
Meeting Document : WG-KRILL-93/26 : Auteur(s): M. Naganobu and S. Kawaguchi (Japan)
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On the catchability of bottom trawl in relation to icefish (C. gunnari)
Abstract: Analysis of Russia HAK-4M trawl catchabilities has been made in the paper. This trawl ... have been used when icefish bottom surveying. An analysis of total catchability and a differential one ... (that is catchability in relation to fish of different length) has been realized by models of ... probability statistical theory for fishing trawls. Influence of trawling speed, trawl configuration and ...
Meeting Document : WG-FSA-SAM-04/11 : Auteur(s): Kasatkina, S.M., Ivanova, V.F.
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2009/10
Subarea 88.1 and for 9 years in Subarea 88.2. This report summarises the timing, depth, and location of ... fishing together with the catch of Dissostichus spp and bycatch species by year for the period 1997–98 to ... 2009–10. During the 2009–10 fishing year most of the catch in Subarea 88.1 came from the slope SSRUs ... considerably over time in each of the fisheries showing no trend in the main fisheries in Subarea 88.1 and SSRU ...
Meeting Document : WG-FSA-10/23 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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Among-year variation in growth of Antarctic krill Euphausia superba based on length-frequency data
Abstract: Understanding the temporal variability in vital rates (e.g. growth and survivorship) of ... to mechanistic drivers and their population consequences. For somatic growth, empirical estimates of ... estimating growth from observed length-frequency samples by combining kernel density estimates of the length ... Southern Ocean over a span of 19 yr to document among-year variation in krill growth during the austral ...
Meeting Document : WG-EMM-13/P01 : Auteur(s): A.O. Shelton, D. Kinzey, C. Reiss, S. Munch, G. Watters and M. Mangel (USA)