Search results
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Distribution and some biological features of icefish (Champsocephalus gunnari) at different life cycle stages in the South Georgia subarea
fish distribution at different stages of physiological state. Juvenile fish mainly distribute in the ... south, immature fish- in the cast and southwest, while adult at the north of the shelf. It was revealed ... had the opposite direction. Overwintering of icefish occurred at the depths of 200-250 m far from the ... biological features of icefish (Champsocephalus gunnari) at different life cycle stages in the South Georgia ...
Meeting Document : WG-FSA-99/65 : Author(s): Zh.A. Frolkina (Russia)
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A von Bertalanffy growth model for Division 58.5.2 fitted to length-at-age data and a comparison of predicted with observed growth from mark–recapture data
the length-at-age data assuming normal errors with constant coefficient of variation using iteratively ... the Fabens model were developed based on assumptions about the distribution of age at first capture ... years old) to the VB model is also given in order to give more realistic predictions of mean length-at ... : A von Bertalanffy growth model for Division 58.5.2 fitted to length-at-age data and a comparison of ...
Meeting Document : WG-FSA-SAM-06/07 : Author(s): S.G. Candy, A.J. Constable, T. Lamb and R. Williams (Australia)
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LENGTH AND AGE AT SPAWNING OF ANTARCTIC TOOTHFISH DISSOSTICHUS MAWSONI IN THE ROSS SEA
Abstract: This study uses a histological assessment of age and length at spawning for female and ... vitellogenic phase over at least a 6–12 month period, resulting in a developed batch of oocytes accumulating at ... remnants of previous spawning) yielded similar results. The age at 50% spawning for females on the Ross Sea ... P.J. Grimes (New Zealand) Title: LENGTH AND AGE AT SPAWNING OF ANTARCTIC TOOTHFISH DISSOSTICHUS ...
Meeting Document : WG-FSA-09/37 : Author(s): S.J. Parker and P.J. Grimes (New Zealand)
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Accumulation of stranded plastic objects and other artefacts at Inaccessible Island, central South Atlantic Ocean
m boulder beach at the western point of Inaccessible Island, central South Atlantic Ocean. This ... repeated the survey made at the same site during 1984, when the highest density of artefacts at the Tristan ... sources had increased by at least 120 per cent, suggesting a recent increase in the density. of artefacts ... Abstract: During 1987 a survey of macro-artefacts (>10 mm diameter) was conducted along a 900 ...
Meeting Document : CCAMLR-VII/BG/04 : Author(s): P.G. Ryan and B.P. Watkins (South Africa)
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Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands derived from a long-term monitoring program (1983–2006) at Potter Cover
Abstract: The long term monitoring program of demersal fish at inshore sites of the South ... Shetland Islands has continued at Potter Cove from 2000 to 2006, covering a continuous sampling period of ... the period 1983-1999, is still evident. At Potter Cove, despite an overall increasing trend of N ... those of G. gibberifrons further declined and remain close to zero. At Harmony Cove, the relative ...
Meeting Document : WG-FSA-06/25 : Author(s): E.R. Barrera-Oro and E.R. Marschoff (Argentina)
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Interannual variation in the summer diet of Adélie penguin (Pygoscelis adeliae) at Edmonson Point
Abstract: Diet sampling of Adélie penguins (Pygoscelis adeliae) was carried out at two colonies ... composition of diet varied between locations: mean weight of food and krill content were generally higher at ... Edmonson Point. In the guard period, mean weight of food was lower at Inexpressible Island. Mean content of ... . Focardi (Italy) Title: Interannual variation in the summer diet of Adélie penguin (Pygoscelis adeliae) at ...
Meeting Document : WG-EMM-04/38 : Author(s): S. Olmastroni, F. Pezzo, I. Bisogno and S. Focardi (Italy)
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Mortality of macaroni penguins (Eudyptes chrysolophus) at Marion Island caused by avian cholera (Pasteurella multocida) in 2004/05
Abstract: At Marion Island, an outbreak of Avian Cholera Pasteurella multocida killed about 2 000 ... and D. Tshingana (South Africa) Title: Mortality of macaroni penguins (Eudyptes chrysolophus) at ... Macaroni Penguins Eudyptes chrysolophus at the colony at Kildalkey Bay during November 2004. Other colonies ... of Macaroni Penguins and other species of seabirds were not affected. In March 1993, an unknown ...
Meeting Document : WG-EMM-05/37 : Author(s): R.J.M. Crawford, B.M Dyer, M.S. De Villiers, G.J.G. Hofmeyr and D. Tshingana (South Africa)
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SUMMER SURVEY OF FUR SEALS AT PRINCE EDWARD ISLAND, SOUTHERN INDIAN OCEAN
remained free of Subantarctic fur seals and had expanded at a mean intrinsic rate of natural increase of ... growth. Author(s): M.N. Bester, P.G. Ryan and J. Visagie Title: SUMMER SURVEY OF FUR SEALS AT PRINCE ... Abstract: The onshore distributions and the abundances of Antarctic fur seals Arctocephalus ... gazella and Subantarctic fur seals A. tropicalis were determined at Prince Edward Island during 16–20 ...
Meeting Document : WG-EMM-10/P15 : Author(s): M.N. Bester, P.G. Ryan and J. Visagie
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INVESTIGATING LENGTH AT MATURITY OF ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) BASED ON SCIENTIFIC OBSERVERS’ DATA
difference in the GSI values of fish at different maturity stages. However these studies were carried out on ... the shelf contained a mixture of fish that had spawned or not, with length at 50% maturity of about ... 137cm. The equivalent GSI at 50% maturity was in the range of 1.1 to 1.4%. These results were used to ... , for example a yearly northern migration during spawning season only. Lengths at 50% maturity of ...
Meeting Document : WG-FSA-08/48 : Author(s): S. Mormede, S. Parker and P. Grimes (New Zealand)
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Report on the status of wandering, black-browed and grey-headed albatrosses at South Georgia
since 1997 in the rate of decline of wandering albatrosses at Bird Island, which now stands at 4.5% per ... -term viability of the breeding populations of these species of albatrosses at South Georgia. Author(s ... Abstract: Surveys of all known breeding sites of wandering, black-browed and grey-headed ... albatrosses were carried out at South Georgia in the 2003/04 breeding season. Wandering albatrosses were ...
Meeting Document : WG-FSA-04/71 : Author(s): S. Poncet (United Kingdom),G. Robertson (Australia), R. Phillips (United Kingdom), K. Lawton (Australia), B. Phalan, J. Croxall and P. Trathan (United Kingdom)