Search results

1. Management of C. gunnari in Subarea 48.3

   Abstract:  The management of Champsocephalus gunnari at South Georgia is complicated by the ... likelihood of substantial periodic variation in natural mortality rates. These may be associated with ... increased consumption of icefish by Antarctic fur seals in years of poor krill availability. Thus natural ... mortality of icefish may, in some years, increase by a large factor (assumed here to be 4) declining to ...

   Meeting Document : WG-FSA-97/38 : Author(s): Kirkwood, G.P., Parkes, G.B., Everson, I., Agnew, D.J.

2. Oceanography of the South Georgia and South Orkney Islands regions using high-resolution models

   productive, supporting large colonies of higher predators, and with a history of commercial exploitation ... . Many of the key oceanographic and ecological processes determining the operation of these marine ... ecosystems operate over small spatial scales of <10 km. Understanding the drivers of variability in such ... processes requires the development of high-resolution ocean models. Here we describe the development of ...

   Meeting Document : WG-EMM-17/30 : Author(s): E. Young, E. Murphy and P. Trathan

3. The morphology of Antarctic toothfish (Dissostichus mawsoni Norman 1937) males and females and new data on its gonad structure in the Ross Sea in the summer period

   Abstract:  The results of the histological analysis of the Antarctic toothfish (Dissostichus ... 88.2 of the Ross Sea are presented. The morphological parameters and indices of maturity have been ... described. The histological criteria of the assessment of the ovary maturity stages, cytological parameters ... of oocytes and type of the toothfish oogenesis have been determined. The analysis of the histological ...

   Meeting Document : WG-FSA-07/38 Rev. 2 : Author(s): S.V. Piyanova and N.V. Kokorin (Russia)

4. Fishes incidentally caught by Japanese Antarctic krill commercial fishery to the north of the South Shetland Islands during the 1994/95 austral summer

   Abstract:  Observations on abundance of by-catch fishes were made during the austral summer months ... of 1995 (from 30 January to 18 February) on board F/V Niitaka Maru to the north of the South Shetland ... Islands. Among 78 hauls examined, a total of 97 specimens of fishes belonging to five species, Electrona ... sample of 50 kg of krill. Number of by-catch fishes ranged from 0 to 50 per 100 kg of krill catch and ...

   Meeting Document : WG-EMM-95/56 : Author(s): Iwami, T.

5. Spatial distribution of Champsocephalus gunnari in Subarea 48.3. Some implications for parameter estimation

   Abstract:  Results of the analysis of three consecutive cruises to subarea 48.3 are analyzed. A ... significant variance component associated with the formation of clusters of stations was found as well as a ... (as in the estimation of the variance of the mean density) might result in a gross underestimation of ... the variance. The spatial pattern of density across years might be applied to construct a model of ...

   Meeting Document : WG-FSA-96/30 : Author(s): Calcagno, J., Gonzalez, B., Marschoff, E.

6. Estimates of the tag loss rates for single and double tagged toothfish (Dissostichus mawsoni) fishery in the Ross Sea

   modelling of the Antarctic toothfish (Dissostichus mawsoni) populations in Subarea 88.1 and 88.2. The ... the CASAL stock assessment models from the available data. Revised estimates of the rate at which ... individual tags are lost from tagged toothfish in Subareas 88.1 and 88.2 from a sample of 969 double tagged ... ) of individual tags were lost almost immediately, and then there was an ongoing rate of about 0.039 ...

   Meeting Document : WG-SAM-11/18 : Author(s): A. Dunn, M.H. Smith (New Zealand), D.J. Agnew (UK) and S. Mormede (New Zealand)

7. Meeting of Antarctic experts comes to a close

   MEDIA RELEASE 1 November 2019 Today sees the close of the Thirty-eighth Meeting of the Commission ... for the Conservation of Antarctic Marine Living Resources (CCAMLR) in Hobart, Australia. Early in ... October, scientists met to review the status and trends of fish stocks regulated by CCAMLR. The Scientific ... Committee subsequently reviewed the outcomes of that meeting, together with several other specialist working ...

   Page : Site Section: The Organisation

8. Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Subarea 48.6

   last WG-SAM meeting. We tentatively recalculated a sample size of Dissostichus spp in each block in ... such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ... coefficient variance of biomass estimate from the bootstrapped procedure, under the condition that the ... blocks, in order to promote successful stock assessment. We tentatively examined the degree of coverage ...

   Meeting Document : WG-FSA-13/37 : Author(s): Delegation of Japan

9. ENVIRONMENTAL, SPATIAL, TEMPORAL AND OPERATIONAL EFFECTS ON THE INCIDENTAL MORTALITY OF BIRDS IN THE LONGLINE FISHERY IN THE CROZET AND KERGUELEN AREAS 2003–2006

   estimate of mortality derived from these observations amounts to between 7 766 and 10 541 birds caught. The ... great majority (between 84 and 91% depending on the season) were white-chinned petrels, the males of ... which species seem to be more vulnerable to this type of mortality. Grey petrels were also caught ... incidentally in large numbers (576 individuals) over the same period, and represent between 9 and 16% of ...

   Meeting Document : SC-CAMLR-XXVII/12 : Author(s): Delegation of France

10. Infectious diseases of Antarctic penguins: current status and future threats

    alterations due to climate change: the Western Antarctic Peninsula, the Ross Sea, and coastal regions of East ... Antarctica. From previous reports we know that penguin species are highly susceptible to a number of ... infectious diseases. The number of investigations into infectious diseases of penguins has continued to ... increase over the last 50 years.  However, issues of data not being published and a lack of formal risk ...

    Meeting Document : WG-EMM-14/53 : Author(s): W.W. Grimaldi, P.J. Seddon, P.O.B. Lyver, S. Nakagawa and D.M. Tompkins (New Zealand)

Pages