Résultats de la recherche

1. COMPARISON OF THE PRECISION OF DIRECT VERSUS AGE LENGTH KEY METHODS OF ESTIMATING CATCH-AT-AGE PROPORTIONS

   ) of fish in the catch, determining the ages in the sample, and calculating proportions in each age ... the length frequency distribution, and thus that of the age distribution, are over-represented in the ... younger age classes in terms of the accuracy of integrated assessments that employ catch-at-age ... class. This “direct” method can be replaced by the age length key (ALK) method if there are in addition ...

   Meeting Document : WG-FSA-09/22 Rev. 1 : Auteur(s): S.G. Candy (Australia)

2. Results of study of the oogenesis characteristics of Antarctic toothfish (Dissostichus mawsoni Norman 1937) (Nototheniidae) from Subareas 88.1 and 88.2 (Ross Sea)

   and 88.2 in the Ross Sea are presented. The morphological parameters, indices of gonads have been ... % of total cell number. The oocytes in the ovaries of analyzed fish did not reach the maximum size ... Abstract:  The results of the histological analysis of the Antarctic toothfish (Dissostichus ... mawsoni) reproductive system, caught in December-March, 2004-2005 by the longliner VOLNA in subareas 88.1 ...

   Meeting Document : WG-FSA-07/49 : Auteur(s): S. V. Piyanova and A.F. Petrov (Russia)

3. Important aspects of prey distribution for the formation of foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island

   compared to evaluate important factors for the formation of foraging areas of Chinstrap penguins ... foraged in the inshore region, while overnight foraging penguins foraged in the slope region. It was ... suggested that important factors for the formation of daytime foraging areas may be mainly 1), while those ... difficulty in perceiving prey at night. Antarctic fur seals foraged mostly in the slope/offshore region ...

   Meeting Document : WG-EMM-97/28 : Auteur(s): Bengtson, J.L., Hiruki, L.M., Naganobu, M., Ichii, T., Meyer, W.R., Cameron, M.F., Boveng, P., Takao, T., Miura, A., Jansen, J.K., Kawaguchi, S., Hayashi, T.

4. Demographic characteristics of the Adélie penguin population of Béchervaise Island after 12 years of study

   numbers) were analysed for the Béchervaise Island Adélie penguin colony in eastern Antarctica after 12 ... breeding success calculated. As for most long-lived seabird species, growth/decline rates of the Adélie ... rates, especially of young breeding adults, than to changes in fecundity parameters. These findings are ... characteristics of the Adélie penguin population of Béchervaise Island after 12 years of study Approval:  Approved ...

   Meeting Document : WG-EMM-02/48 : Auteur(s): J. Clarke, K. Kerry, A. Townsend and L. Emmerson (Australia)

5. The use of Antarctic shags to monitor coastal fish populations: evaluation and proposals after five years of test of a standard method

   . Likewise, the history of the development of this theme in relation to the EMM and FSA Working Groups of ... and quantitatively the diet of shags and can reflect differences in fish availability between seasons ... Abstract:  This overview reflects the main points of the feasibility of using the Antarctic Shag ... CCAMLR since the onset of the 1990s until the recent five year testing period of the Standard Method, is ...

   Meeting Document : WG-EMM-03/5 : Auteur(s): R. Casaux and E. Barrera-Oro (Argentina)

6. Review of Russian investigations of krill escape through the meshes of commercial trawls: approaches to estimating gross removal at krill fishery

   Abstract:  In this study the review of Russian investigations of krill escapement through the ... studies in two aspects: the problems and approaches to elaboration of the efficient methodology for the ... mortality» assessment in krill fishery. It is suggested to use the models of probability-statistical theory ... of fishing systems developed in AtlantNIRO, for solving the following tasks: quantitative ...

   Meeting Document : WG-EMM-10/19 : Auteur(s): S.M. Kasatkina (Russia)

7. Breeding numbers and success of Eudyptes penguins at Marion Island, and the influence of arrival of adults

   Abstract:  At Marion Island, there was considerable correlation in numbers of adults breeding at ... proportions of birds breeding. For both species the time of arrival of females for breeding, and for ... Rockhopper Penguins the mass of females on arrival, was significantly related to breeding success. Therefore ... significantly correlated with that of females. Although both species had low weights on arrival after the El ...

   Meeting Document : WG-EMM-05/38 : Auteur(s): R.J.M. Crawford, J. Cooper, B.M. Dyer and L.G. Underhill (South Africa)

8. To the problem of distribution of different species of toothfishes Dissostichus

   Abstract:  According to the results of the long-term studies (1967–1991) in expeditions to the sub ... species were not overlapped in the area under review. Author(s):  Prutko, V.G. Title:  To the problem of ... -Antarctic and Antarctic waters of the Indian Sector of the Southern Ocean, distribution areas of the ... Patagonian and Antarctic toothfish are clearly cut. It was concluded that the areas of these toothfish ...

   Meeting Document : WG-FSA-97/20 : Auteur(s): Prutko, V.G.

9. Definition of the problem of estimating fish abundance over an area from acoustic line transect measurements of density

   Abstract:  The problem of acoustic abundance estimation is briefly reviewed. Under proper ... density consequently reflect biological variations, or inhomogeneity in spatial distribution. The ... is defined. Related problems of estimating the variance of the abundance estimate and of mapping the ... spatial distribution are also defined. A partial list of candidate methods for solving the several ...

   Meeting Document : WG-KRILL-91/08 : Auteur(s): K.G. Foote and G. Stefánsson (Norway)

10. On problem of natural subdividing of Antarctic krill’s geographic area (an application to the monitoring of fishing)

    Abstract:  The possibilities of natural regionisation of antarctic krill's geographic area ... with emphasis on fisheries regions distribution are considered on the base of consisting data of ... position of regions of increased abundance of krill creates strong difficulties for determination of the ... membership crustacean to that or another stock on the basis of recent knowledges. Problem may be solved, if ...

    Meeting Document : WG-KRILL-93/37 : Auteur(s): R.R. Makarov and L.L. Menshenina (Russia)

Pages