Résultats de la recherche
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Length-age composition of icefish (Champsocephalus gunnari, perciformes, notothenioidei, Channichthyidae) from different locations of South Georgia Island subarea
. Larger number of "mature" fish in the west is related to migration from eastern area of ... Ch.gunnari length-age composition structure at early years of life for fish inhabiting areas to the south of ... maturing individuals as they grow. It has been defined that a part of western group of fish at the age of 2 ... -3 years had been migrating towards the Shag Rocks. It has been found that predomination of ...
Meeting Document : WG-FSA-00/32 : Auteur(s): Zh.A. Frolkina (Russia)
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Differentiation of independent populations of Antarctic krill
. superba in the Southern Ocean subdivided into several independent sub-populations. The number of these sub ... : Several countries have recently shown an interest in commercial krill fishing. An understanding of krill ... of recent studies in genetic and morphophysiological variability of krill and Antarctic water ... circulation. On the basis of the review, it is suggested that there is probably one composite population of E ... review, it is suggested that there is probably one composite population of E. superba in the Southern ... OF THE ANTARCTIC KRILL In recent years, several countries (Poland, Federal Republic of Germany ... , Japan, Chile and some others) have shown their interest in the problem of utilization of the resources ... has been estimated for the entire area of its distribution, while it is fished only in particular ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 275-281 : Auteur(s): USSR
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Progress towards validation of ageing of Dissostichus eleginoides using otoliths
determination in this species: investigating the accuracy of ageing small fish (1000 days; and developing ... techniques to analyse the daily marks at the centre of the otolith in order to pinpoint the position of the ... . Results indicate that current methods for ageing D. eleginoides are appropriate: the number of observed ... annuli on the otoliths after the strontium mark was consistent with the time at liberty of the fish after ...
Meeting Document : WG-FSA-04/67 : Auteur(s): K. Krusic-Goluband R. Williams (Australia)
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Foraging strategies of chinstrap penguins at Signy Island, Antarctica: importance of benthic feeding on Antarctic krill
Abstract: Chinstrap penguins Pygoscelis antarctica are one of the major consumers of Antarctic ... krill Euphausia superba in the Southern Ocean. To examine their foraging strategy, we studied foraging ... ) and longer overnight (19.9 h) trips, with diurnal trips (74%) being dominant in number (263 out of 355 ... trips). The diving depths of our study birds were much deeper (to 179 m) than previous studies on this ...
Meeting Document : WG-EMM-03/37 : Auteur(s): A. Takahashi (Japan), M.J. Dunn, P.N. Trathan (United Kingdom), K. Sato, Y. Naito (Japan), J.P. Croxall (United Kingdom)
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CCAMLR ecosystem monitoring program standard methods: determination of sex of Adelie penguins
laying. Peak presence of males occurred 15–21 days after the appearance of the first egg in the colony ... Abstract: The suggestion that sex of Adélie penguins, Pygoscelis adeliae, might be assigned by ... observing which member of the pair (the male) takes the first long incubation shift (Anon. 1991) was ... examined for each of the 1990–91, 1991–92 and 1992–93 breeding seasons. There was an 8- or 9-day period ...
Meeting Document : WG-CEMP-94/08 : Auteur(s): K.R. Kerry, J.R. Clarke and G.D. Else (Australia)
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Sexing fledglings and yearlings of magellanic penguins by discriminant analysis of morphometric measurements.
Abstract: Discriminant analysis was used to identify the sexes of fledglings and yearlings in the ... Magellanic Penguin (Spheniscus magellanicus). Eleven morphometric measurements were recorded in a sample of ... , followed by length of the middle toe and bill length. Yearling, besides being distinguishable by plumage ... 102 fledglings and 140 yearlings from the breeding stock at Punta Clara, Chubut, Argentina. Total ...
Meeting Document : WG-CEMP-90/42 : Auteur(s): J.A. Scolaro (Argentina)
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Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus mawsoni) from Division 58.4.1 by Spain
season (2015/16) of the Spanish research fishing in the 58.4.1 Division obtained for growth rings on ... Abstract: We present preliminary results on age and growth of Dissostichus mawsoni for the third ... values used in the Ross sea assessment. Author(s): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde ... otolith readings. It is included the growth parameters estimates by sex. Growth parameters obtained using ...
Meeting Document : WG-FSA-17/66 : Auteur(s): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde and S. Barreiro
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Evaluation of populations of chinstrap and gentoo penguins at Cierva Cove (ASPA N° 132). Is this site an appropriate control area for non-fishing effects?
gentoo (P. papua) penguin colonies in the Cierva Cove region of the Danco Coast, including ASPA No. 134 ... . Data indicate an overall increase in breeding population size of chinstrap and gentoo penguins. Given ... Abstract: We present new censuses data for a suite of chinstrap (Pygoscelis antarctica) and ... positive population growth in recent years in this rapidly changing environment and a position within Area ...
Meeting Document : WG-EMM-13/27 : Auteur(s): M.M. Santos, N.R. Coria, E. Barrera-Oro (Argentina) and J.T. Hinke (USA)
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Investigations of intensity of krill drift near South Georgia Island
) was assumed about 60 km. Speed of drift in these spatial limits was assumed about 10 cm sec-1. The ... Abstract: Calculation of drift’s speed (transport with current) of Antarctic krill along the ... average density of krill before the beginning of transport along the island’s shore was assumed about 0.1 ... g m-3. Total amount of krill immigration on island’s shelf (in above indicated limits) were examined ...
Meeting Document : WG-CEMP-92/32 : Auteur(s): V.V. Popkov (Russian Federation)
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Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus mawsoni) (2013-14 season) from Division 58.4.1 by Spain
season (2013/14) of the Spanish research fishing in the 58.4.1 Division obtained for growth rings on ... Abstract: We present preliminary results on age and growth of Dissostichus mawsoni for the second ... slightly with the values used in the Ross sea assessment for males. Author(s): L.J. López-Abellán, M.T.G ... otolith readings. It is included the age-length key and growth parameters estimates by sex. Growth ...
Meeting Document : WG-FSA-16/58 : Auteur(s): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde and S. Barreiro