Résultats de la recherche

1. Distribution, morphology, growth, reproduction, diet and trophic position of two species of grenadier (Macrourus whitsoni and M. caml) in the Ross Sea region of the Southern Ocean (CCAMLR Subareas 88.1 and 88.2)

   scale, Macrourus whitsoni and M. caml seem to be almost completely sympatric by depth and area, with ... either species. Gonad staging data imply that the spawning period of both species may be extended ... of the two species of 94% overall. We found that total length (TL) was no less precise a measurement ... both appearing to be abundant between depths of 900 and 1900 m. There was a small but significant ...

   Meeting Document : WG-FSA-12/54 Rev. 1 : Auteur(s): M.H. Pinkerton, P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown (New Zealand)

2. Otolith microstructure of juvenile mackerel icefish (Champsocephalus gunnari) (Channichthyidae) in the South Georgia area

   2001/02 year class lasted four months. This was estimated based on a retrospective count of daily ... relationship found between fish length and daily otolith increments could be used for age differentiation of ... ; Lisovenko, 1982; Frolkina, 1989, 1999, 2001, 2002) has demonstrated that fi sh with gonads at stages II ... (1980, 1982, 1985) reported the values to be 13.5 and 19.2 cm respectively; and Frolkina (1989, 2001 ... ) reported the mean length of a yearling to be 9–11 cm and that of 2-year-old fi sh to be 17–19 cm. For ... appeared that hatching occurred in September–October 2000 and in June–October 2001 (Figure 4). Therefore ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 173–181 : Auteur(s): Shcherbich, L.V

3. Management and uncertainty: the example of South Georgia

   (including the effects of doing nothing) could provide a procedure for providing advice that could cope with ... :  Decisions on fishery management are often made with some degree of uncertainty in scientific advice. Such ... uncertainty is unlikely to be avoided even though further research should reduce its degree. It seems useful ... . From an examination of Articles IX 2(f) and XV 2(e, d) of the CCAMLR Convention it follows that a ... exploitation, perhaps F=0.05, could be sustained with a recruitment around that of the 1970's i.e. around 5 ... exploitation (e.g. F=O.l) coul4 be sustained, and that this could be consistent with a higher recruitment ... pattern of mortalities that are more consistent with apparent changes of fishing effort. It must be ... often made with some degree of uncertainty in scientific advice. Such uncertainty is unlikely to be ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 341-353 : Auteur(s): Gulland, J.A.

4. The applicability of international conservation instruments to the establishment of marine protected areas in Antarctica

   that have relevance to marine protected area (MPA) development provide for action to be taken globally ... with global work to develop high seas protected areas should be undertaken to achieve the goal of a ... , depending on their specific provisions, full application in Antarctic waters may be difficult, inappropriate ... concluded that although direct application of other international conservation agreements is in most cases ...

   Meeting Document : WG-EMM-04/32 : Auteur(s): S. Grant (United Kingdom)

5. Introducing Casal2 for toothfish stock assessments

   constructed. Casal2 models can be used for a single population with a single anthropogenic event (i.e., a ... github website. We also suggest that one or multiple assessments of toothfish be included in the Casal2 ... model that allows more flexibility in specifying the population dynamics, parameter estimation, and ... model outputs than CASAL. Models are built with user-defined categories such as area, sex and maturity ...

   Meeting Document : WG-SAM-18/14 : Auteur(s): S. Mormede

6. ANALYSIS OF VARIABILITY OF KRILL SIZE AND FISH BY-CATCH IN JAPANESE KRILL FISHERY BASED ON SCIENTIFIC OBSERVER DATA

   formula with the variance terms derived from the Bayesian model. For both krill length and bycatch fish ... CV. The results of this study suggest that scientific data collectionby commercial fishery is an ... rising cost of observer program. Author(s):  T. Okuda and M. Kiyota (Japan) Title:  ANALYSIS OF ...

   Meeting Document : WG-EMM-11/39 : Auteur(s): T. Okuda and M. Kiyota (Japan)

7. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using the Japanese fishery data

   vertical migration of Antarctic krill (Euphausia superba) associated with the brightness categories of the ... smaller around at daytime during summer in SS and SO. Daily average trawling depth tended to be shallower ... middle autumn and winter in each brightness category. Author(s):  K. Taki, T. Hayashi and M. Naganobu ...

   Meeting Document : WG-EMM-04/44 : Auteur(s): K. Taki, T. Hayashi and M. Naganobu (Japan)

8. Revised assessment models for Patagonian toothfish in research block 58.4.3a_1 of Division 58.4.3a, Elan Bank for the years 2005–2014

   fish tagged in 2012, and a catch at age model including the data with a single age length key applied ... was calculated at 30 tonnes. The fishing bias to the shallow areas should be avoided because the ... projection period in the model. Author(s):  K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan ...

   Meeting Document : WG-FSA-15/22 : Auteur(s): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)

9. Fishery Report: Dissostichus eleginoides Heard Island (Division 58.5.2)

   grounds, and that this has increased with the addition of a second longline fishery in 2007/08. The pot ... have been undertaken since 1990 (Table 4). The survey design was consolidated in 2001 with the ... observations in CASAL for each year between 1997 and 2008. Proportions-at-length, that were combined with ... 25. CPUE indices were assumed to be relative mid-season vulnerable biomass indices with an ...

   Document : Site Section: Publications

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

    /decline rates of the Adélie penguin population at Béchervaise Island were found to be more sensitive to ... parameters. Results are discussed in comparison with data from a declining Adélie penguin population in the ... small percentage of the total population that the effect on the overall population model will be small ... rate of approximately 0.3% per annum. It should be noted that this population model assumes stable ... incubated nests. It is quite pos- sible that these values of adult survival may be underestimated by this ... colony breeding success reasonably well. It should be emphasised that this model assumes a stable rate ...

    Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 53–74 : Auteur(s): Clarke, J., L.M. Emmerson, A. Townsend and K.R. Kerry

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