Résultats de la recherche

1. Conditions for the precise measurement of fish target strength in situ

   obtained from one large same fish school in the eastern shelf of Bering sea during the intership ... Abstract:  Conditions for precise measurement of in situ fish target strength (TS) are empirically ... studied and two indexes are introduced for this purpose. One is the number of fish in the effective ... calibration between Japanese and U.S. vessels on 15 and 16 August 1991. Published in J.Mar.Acoust.Soc. Author ...

   Meeting Document : WG-Krill-94/35 : Auteur(s): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA)

2. Counts of surface-nesting seabirds at Marion Island in 2003/04

   , eastern rockhopper penguins E. chrysocome filholi and Crozet shags Phalacrocorax [atriceps] melanogenis ... continued to decrease at Marion Island in 2003/04. The decreases are thought to be due to a reduced ... appear stable at the island, but often with large fluctuations in numbers breeding. Numbers of dark ... have shown a long-term decrease, although the count for dark-mantled sooty albatrosses was higher in ...

   Meeting Document : WG-EMM-04/29 : Auteur(s): R.J.M Crawford, N. de Bruyn, B.M. Dyer, B. Hanise, N.T.W. Klages, P.G. Ryan, L.G. Underhill and L. Upfold (South Africa)

3. Foraging response of Antarctic fur seals to changes in the marine environment

   fish and squid in the diet. Foraging trip duration, ashore duration and dive frequency increased ... 1964 d at sea. The frequencies of krill, fish and squid in the diet were estimated from prey items ... contained in scats. In 1996, a year of high krill abundance, females made shorter foraging trips, fewer ... dives and spent more time ashore than in 1994 when krill was scarce. Females fed exclusively on krill in ...

   Meeting Document : WG-EMM-99/35 : Auteur(s): D.J. McCafferty, I.L. Boyd, T.R. Walker and R.I. Taylor (United Kingdom)

4. TARGET STRENGTH STUDIES ON ANTARCTIC SILVERFISH (PLEURAGRAMMA ANTARCTICUM) IN THE ROSS SEA

   ) theoretical, 2) ex situ measures on dead or living fish under experimental conditions, 3) in situ measures on ... free swimming fish in their natural habitat. A canvassing of the literature suggested that the type of ... be several dB higher than in situ (Nakken and Olsen, 1977). On other hand the many factors likely to ... influence TS measurements in situ (swimming movements and aspect, day-night behaviour, physiological state ...

   Meeting Document : SG-ASAM-09/10 : Auteur(s): M. Azzali, I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi (Italy)

5. Preliminary results of investigations of the Federal Republic of Germany on Notothenia rossii marmorata (Fischer, 1885) in January/February 1985

   Notothenia rossii marmorata (Fischer, 1885) in January/February 1985 Abstract / Description:  A bottom trawl ... survey carried out by FRV " Walther Hervig " in January/February 1985 was used to collect ... rebuild the stock around South Georgia might be successful. Although reported catches in recent years have ... probably still less than 10% of the pristine stock, Mean length in the catches has only slightly increased ... NOTOTHENIA ROSSII MARMORATA (FISCHER, 1885) IN JANUARY/FEBRUARY 1985 Abstract A bottom trawl survey ... carried out by FRV "Walther Hervig" in January/February 1985 was used to collect further basic: data ... around South Georgia might be successful. Although reported catches in recent years have been low, N ... than 10% of the pristine stock, Mean length in the catches has only slightly increased since 1981/82 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 33-57 : Auteur(s): Kock, K.-H.

6. Milk consumption and growth efficiency in Antarctic fur seal (Arctocephalus gazella) pups

   consumption was determined on 388 occasions in 177 pups. Mean estimates of milk consumption ranged from 2.5 to ... 2-day maternal attendance periods (feeding bouts). There were no differences in milk consumption ... between the sexes in any year. Both per-bout and per-day milk consumption increased steadily with age ... before decreasing significantly in the last 30-40 days of lactation. Per-bout milk consumption was ...

   Meeting Document : WG-EMM-97/11 : Auteur(s): Socha, D.G., Arnould, J.P.Y., Boyd, I.L.

7. Comparisons in prey distribution between inshore and offshore foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island

   foraging trip such as Antarctic fur seals (Arctocephalus gazella) and overnight foraging chinstrap penguins ... (Pygoscelis antarctica) went beyond the inshore region and foraged in the slope/offshore region, even though ... the inshore region. Only diurnal chinstrap penguins foraged in the inshore region. The following ... advantages are considered for visual predators to feed in the slope/offshore region at night:(l) krill showed ...

   Meeting Document : WG-EMM-96/49 : Auteur(s): Ichii, T., Bengtson, J.L., Boveng, P., Cameron, M.F., Naganobu, M., Meyer, W.R., Hiruki, L.M., Takao, T., Jansen, J.K., Kawaguchi, S.

8. Atlas of top predators from French Southern Territories in the Southern Indian Ocean

   . Indeed, seabirds and seals are considered as good indicators of changes in ecosystems at differential ... Atlas of top predators from the French Southern Territories in the Southern Indian Ocean is a summary of ... penguin, Adelie penguin, eastern rockhopper penguin, northern rockhopper penguin, macaroni penguin ... identifying important areas in the southern Indian Ocean. The determination of zones of high species richness ...

   Meeting Document : WG-EMM-16/42 : Auteur(s): K. Delord, C. Barbraud, C.-A. Bost, Y. Cherel,C. Guinet and H. Weimerskirch

9. DISTRIBUTION AND BIOLOGY ON ANTARCTIC KING CRAB PARALOMIS FORMOSA CAUGHT AS BYCATCH IN FISHERY FOR TOOTHFISH (DISSOSTICHUS ELEGINOIDES) ON PATAGONIAN CONTINENTAL SLOPE

   Abstract:  Scientific observation was conducted in the commercial trip on the long-liner " ... ;Simeiz", operating under the Ukrainian flag, in the south-western Atlantic Ocean outside the ... exclusive (marine) economic zones of the foreign states (FAO statistical area 41) in the period from ... , accordingly. Sex ratio was 1:1 in the period from April till May, and 2:1 in the period from June till ...

   Meeting Document : WG-FSA-09/30 : Auteur(s): Yu.V. Korzun (Ukraine)

10. Does large-scale ocean circulation structure life history connectivity in Antarctic toothfish (Dissostichus mawsoni)?

    : successfully spawning fish spend only a part of their adult life history in the Ross Sea; areas in the eastern ... (Dissostichus mawsoni) in the Southeast Pacific Basin (SPB) and Ross Sea, with a life history structured by the ... environmental heterogeneity, yet the chemistry in otolith nuclei, deposited during early life, showed no ... differences. Age data showed only adult fish in catches on the Pacific-Antarctic Ridge in the SPB; and ...

    Meeting Document : WG-FSA-12/P02 : Auteur(s): J. Ashford, M. Dinniman, C. Brooks, A. Andrews, E. Hofmann, G. Cailliet, C. Jones and N. Ramanna

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