Résultats de la recherche
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Krill catches and consumption by land-based predators in relation to distance from colonies of penguins and seals in the South Shetlands and South Orkneys, 1987-1990
within 40 km of the coast, and 90% within 80 km in all years 1988-1990. In 1987 and 1988 75% of the catch ... Abstract: Zones of 20 km width are defined around selected colonies of penguins distributed ... for some years, months and zones of distance from the shore the catch of krill is 50% or more of the ... land-based predator consumption. Author(s): D.J. Agnew (Secretariat) Title: Krill catches and ...
Meeting Document : WG-CEMP-91/25 : Auteur(s): D.J. Agnew (Secretariat)
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Timescale of ovarian maturation in Notothenia coriiceps (Richardson); evidence for a prolonged adolescent phase
for about one year. The results from a two year study at Signy Island indicate that this adolescent ... fish spawn each season. Two reproductive strategies are considered, one where adverse conditions are ... yolk deposition begins to take place. This 'adolescent' phase was thought originally to last ... phase lasts for about four years. There is also some evidence to indicate that not all sexually mature ...
Meeting Document : WG-FSA-93/26 : Auteur(s): Inigo Everson (United Kingdom)
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New page in the Antarctic krill fishing (Translation from The Fishing Industry of Ukraine, 1–2/2007: 11–14)
Abstract: Antarctic krill (Euphausia superba) is one of the largest marine resources of animal ... -krill super trawlers. Author(s): Delegation of Ukraine Title: New page in the Antarctic krill fishing ...
Meeting Document : SC-CAMLR-XXVI/BG/26 : Auteur(s): Delegation of Ukraine
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Effects of recruitment variability and natural mortality on Generalised Yield Model projections and the CCAMLR Decision Rules for Antarctic krill
%, 20%, or 30% were added to the observed recruitment values. The CCAMLR "depletion" decision ... maintaining spawning biomasses above 20% of unfished biomass in more than 90% of the trials. As the values for ... below 20% of its unfished value, meeting the CCAMLR "depletion" decision rule for recruitment ... two of the four areas, Elephant Island and the Western Area, were unable to support the catch while ...
Meeting Document : WG-EMM-12/26 : Auteur(s): D. Kinzey, G. Watters and C. Reiss (USA)
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Competition-induced starvation drives large-scale population cycles in Antarctic krill
Abstract: Antarctic krill (Euphausia superba)—one of the most abundant animal species on Earth ... —exhibits a five to six year population cycle, with oscillations in biomass exceeding one order of magnitude ... , with drastic consequences for the entire Antarctic ecosystem. Author(s): A.B. Ryabov, A.M. de Roos, B ... . Meyer, S. Kawaguchi and B. Blasius Title: Competition-induced starvation drives large-scale population ...
Meeting Document : WG-EMM-18/P05 : Auteur(s): A.B. Ryabov, A.M. de Roos, B. Meyer, S. Kawaguchi and B. Blasius
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Abundance of larvae and assessment of recruitment size of Carlsberg lantern fish (Electrona carlsbergi Tåning, 1932) - (family myctophidae) in Southwest Atlantic in 1989
crest between 38°30’- 45°S. and 15°- 20°W. Larvae were collected with BONGO and JUDAY nets in oblique ... recruitment biomass (fish aged up to 1 year) in this species for the area of 87750 square miles studied. The ... abundance of larvae in this area was 4.3 x 10 ind., while the biomass of one year old fish obtained was ... waters of the south po1ar frontal zone. Author(s): Nevisnky, M.M. Title: Abundance of larvae and ...
Meeting Document : WG-FSA-95/07 : Auteur(s): Nevisnky, M.M.
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Longterm monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
confirmed by the present analysis. Results are compared for one (R1) and two year old (R2) age classes ... the representativeness of the study area (60°- 62°30'S and 53°- 57°30 'W) for the ... study using randomisation tests on an analysis of variance. Author(s): de la Mare, W., Loeb, V., Siegel ...
Meeting Document : WG-EMM-96/45 : Auteur(s): de la Mare, W., Loeb, V., Siegel, V.
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Population of macaroni penguins Eudyptes chrysolophus at Marion Island, 1994/95 to 2002/03, with information on breeding and diet
, macaroni penguins usually breed for the first time when aged about three years. From 1994/95–2002/03, pairs ... from about 405 000 pairs in 1983/84 and 434 000 pairs in 1994/95 to about 356 000 pairs in 2002/03. Two ... decrease of 88% between 1979/80 and 2002/03, most of the decrease occurring after 1983/84. At Marion Island ... fledged on average 0.46 chicks per year, an amount thought insufficient to maintain the population ...
Meeting Document : WG-EMM-03/15 : Auteur(s): R.J.M. Crawford, J. Cooper and B.M. Dyer (South Africa)
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Update of the integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) for the Heard and McDonald Islands (Division 58.5.2)
years. A series of standardised longline CPUE data from one of the longline grounds (or subfishery ... CASAL from catch-at-age and aged mark-recapture data as described in Candy et al. (2011). The ... Heard and McDonald Islands (Division 58.5.2) was updated from WG-FSA-09/20. The main change other than ... otoliths collected and aged for each annual RSTS since 2008. Catch-at-length proportions for the commercial ...
Meeting Document : WG-FSA-11/24 : Auteur(s): S.G. Candy and D.C. Welsford (Australia)
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Revised joint research proposal for Dissostichus spp. in Subarea 88.3 by Korea and New Zealand
an additional 3 years covering the period 2018, 2019 and 2020. It was designed to build on Korea’s ... released on the slope, whilst also prospecting two of the northern seamount complexes and two boxes on the ... understanding of stock structure of toothfish in this area, to carry out calibration trials between the two ... (s): Delegations of the Republic of Korea and New Zealand Title: Revised joint research proposal ...
Meeting Document : WG-FSA-18/42 : Auteur(s): Delegations of the Republic of Korea and New Zealand