Результаты поиска

1. Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica

   toothfish in the Ross Sea (Areas 88.1 and 88.2). Biological data from 303 returned specimens was collected ... . These data included species identification, fish length, weight, sex, meristics, reproductive biology ... showed no significant difference in sex ratio. Meristic, diet and age data were consistent with previous ... data showed that most fish were either immature or resting (mature). Gonado-Somatic Indices (GSI) were ...

   Meeting Document : WG-FSA-07/25 : Автор(ы): C.P. Sutton, M.J. Manning, D.W. Stevens, P.M. Marriott (New Zealand)

2. A review of rattail (Macrourus spp.) and skate by-catch and analysis of standardised CPUE, for the exploratory fishery in the Ross Sea (CCAMLR Subareas 88.1 and 88.2) from 1997/98 to 2004/05

   Subareas 88.1 & 88.2). The analysis was based on fine-scale haul-by-haul (C2) data and observer data ... determine factors influencing catch rates of skates from either C2 or observer data because a proportion of ... either dataset. There are a number of inconsistencies within the observer data which need to be resolved ... before these data can usefully be used for estimating bycatch. These include a consistent definition of a ...

   Meeting Document : WG-FSA-05/24 : Автор(ы): S.L. Ballara and R.L. O’Driscoll (New Zealand)

3. INCORPORATING SAMPLING VARIATION AND RANDOM READER ERROR INTO CALCULATION OF EFFECTIVE SAMPLE SIZE IN THE APPLICATION OF AGE LENGTH KEYS TO ESTIMATION OF CATCH-AT-AGE PROPORTIONS

   for the LF sample, where this ESS is obtained from the haul-level LF data, by an over-dispersion ... parameter estimate obtained from simulated samples of age frequency data. These samples are obtained using ... length frequency data. Using simulated data to include only sampling error, the over-dispersion parameter ... matrix ‘smooths-out’ peaks in the true (i.e. without ageing error) age frequency data. Author(s):  S.G ...

   Meeting Document : WG-SAM-09/08 : Автор(ы): S.G. Candy (Australia)

4. Calculating effective releases and recaptures for stock assessments based on tag detection and tagging mortality indices

   in the Ross Sea region. This index was subsequently used in 2013 to select the tagging data to be ... pairwise method utilised an index of tag detection with an arbitrary threshold to determine which tag data ... to include in the stock assessment, with respect to both tag release and tag recapture data. Here we ... . This method allows the use in the stock assessment of tag data from all vessels, via direct application ...

   Meeting Document : WG-SAM-14/30 : Автор(ы): S. Mormede (New Zealand)

5. An updated spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region

   habitat for toothfish (120 cells – semi-restricted model). Model fits to the reproductive data were ... gonadosomatic index thresholds. In this model we keep only proportion spawning data, and retain the assumption ... hypothesis proposed. Further data collection would be useful to improve the parameterisation of the model, in ... the consequences of alternative fish movement hypotheses given the data available. For a given ...

   Meeting Document : WG-SAM-14/31 : Автор(ы): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

6. Species profile of mackerel icefish (Champsocephalus gunnari)

   and became the target species of fisheries in many parts of the low-Antarctic from 1975 to 1990 ...

   Meeting Document : WG-FSA-07/12 : Автор(ы): K.-H. Kock (Germany) and I. Everson (UK)

7. How fast do demersal longlines sink?

   and are important in efforts to minimise seabird by-catch in longline fisheries. We measured sink ...

   Meeting Document : WG-FSA-02/25 : Автор(ы): G. Robertson (Australia), E. Moe, R. Haugen (Norway) and B. Wienecke (Australia)

8. CCAMLR conservation measures: alternative approaches for fishery measures

   majority of the conservation measures adopted by the Commission deal with the management of fisheries, and ...

   Meeting Document : CCAMLR-XX/20 Rev. 1 : Автор(ы): Secretariat

9. Biology and harvesting of Dissostichus eleginoides around Kerguelen Island (Division 58.5.1)

   Abstract:  Dissostichus eleginoides is becoming an increasingly important species in the fisheries ...

   Meeting Document : WG-FSA-91/09 : Автор(ы): G. Duhamel (France)

10. Evaluating the impact of multi-year research catch limits on overfished toothfish populations

    Abstract:  In stocks that have been depleted by overfishing, the benefits of additional fisheries ...

    Meeting Document : WG-FSA-10/42 Rev. 1 : Автор(ы): D.C. Welsford (Australia)

Страницы