Search results

1. Population identity, site-fidelity, movement ranges and preliminary estimates of abundance of southern right whales in the Antarctic Indian sector inferred from genetic markers

   identity as well the individual identity of southern right whales distributed in summer in the Antarctic ... abundance based on ‘mark-recapture’ methods in the Antarctic Indian sector (i.e., between 80°-135°E and ... south of 60°S). In total, 157 biopsy samples were collected as skin biopsies from free-ranging whales ... the presence of a Y-chromosome specific locus. The mtDNA analysis suggested that whales in the ...

   Meeting Document : WG-EMM-18/18 : Author(s): L.A Pastene, M. Goto, P. Acuña, M. Taguchi, T. Hakamada and K. Matsuoka

2. Has krill fishing the potential to adversely affect recruitment in Antarctic notothenioid fishes?

   Abstract:  A few years after krill (Euphausia superba) fishing had started in 1972/73, it became ... by-catch in fisheries targeting krill. The species composition of fish by-catch in krill fisheries is ... well-known from Polish investigations in the late 1970s and the 1980s and from Japanese, Ukrainian, and ... Russian investigations in the 1990s, 2000s and 2010s. However, only a few investigations in the 1990s and ...

   Meeting Document : WG-FSA-14/66 : Author(s): K.-H. Kock (Germany) and C.D. Jones (USA)

3. The effects of global climate variability in pup production of Antarctic fur seals

   range in scale from those that impact individuals to those that impact the entire food web. Climate ... -induced changes in the abundance of species in lower trophic levels can cascade up to apex predators by ... remain largely unexplored. We investigated the delectability, limits, and nonlinearity of changes in ... Antarctic fur seal pup production at South Georgia over a 20-year period in response to environmental ...

   Meeting Document : WG-EMM-06/P2 : Author(s): J. Forcada, P.N. Trathan, K. Reid and E.J. Murphy (United Kingdom)

4. Results from the random stratified trawl surveys to estimate distribution and abundance of Dissostichus eleginoides and Champsocephalus gunnari in the Heard Island region (Division 58.5.2) for 2010 and 2011

   Abstract:  Random stratified trawl surveys were completed in September 2010 and in March to May ... 2011 on the RV Southern Champion, adding to the time series of annual surveys in Division 58.5.2 that ... commenced in 1997. An earlier survey in April 2010 was not completed, but valid hauls from this, as well as ... the September 2010 survey were used in the stock assessment as they provided valuable additional ...

   Meeting Document : WG-FSA-11/23 : Author(s): G.B. Nowara, S.G. Candy and T. Lamb (Australia)

5. An investigation of integrated stock assessment methods for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL

   Abstract:  This paper follows preliminary work in 2005 in developing an integrated assessment for ... Patagonian toothfish in Division 58.5.2. It focuses on developing a “base-case” assessment, which is ... primarily based on the 2005 assessment implemented in the Generalised Yield Model (GYM) using survey data of ... show that an integrated assessment for Dissostichus eleginoides in Division 58.5.2 seems tractable. The ...

   Meeting Document : WG-FSA-SAM-06/14 : Author(s): A. Constable, S. Candy and I. Ball (Australia)

6. Proposal for a CCAMLR-sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea

   years in Subarea 88.1 and for nine years in Subarea 88.2. The research and assessment work in these ... estimate of the fisheries potential yield. However, one source of ongoing uncertainty in the stock ... assessment concerns recruitment dynamics. Pre-recruit Antarctic toothfish fish are caught in various ... locations during fishing operations. However, different vessels catch different length classes in different ...

   Meeting Document : SC-CAMLR-XXX/07 : Author(s): Delegation of New Zealand

7. Oxygen and carbon stable isotopes in otoliths record spatial isolation of Patagonian toothfish (Dissostichus eleginoides)

   Abstract:  Strong contrasts in ambient isotope ratios and in diet suggest stable isotopes in the ... distinguish South American-caught fish from those taken in the Antarctic. Values of δ18O and δ13C predicted ... prior evidence of population isolation. Values of δ18O in the otoliths reflected ambient values as well ... as seawater temperature: low values in Patagonian Shelf fish were consistent with exposure to ...

   Meeting Document : WG-FSA-08/P03 : Author(s): J.R. Ashford and C.M. Jones

8. Research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.1

   began in 2013 in data-poor fisheries. In the present report, catch, effort and biological data recorded ... by all effective vessels were analyzed for the improvement of stock assessment in the research blocks ... . Based on the result, the next three-season (2016-18) research plan in Division 58.4.1 is also presented ... reference area sizes. Although no toothfish fishery data along the shelf area in austral autumn – winter was ...

   Meeting Document : WG-SAM-15/05 : Author(s): Delegation of Japan

9. The toothfish fishery and tagging program in the Amundsen Sea region (SSRUs 882C–H) to 2016/17

   Abstract:  Fishing in the Amundsen Sea region (SSRUs 882C–H) has been managed through a research ... to carry out a reliable stock assessment of the toothfish stock in that area. In this report, we ... precautionary. In the 2016 and 2017 seasons, a total of 19 tagged fish (excluding within season recaptures) were ... recaptured in the research blocks in the South Amundsen Sea region, confirming the utility of the research ...

   Meeting Document : WG-FSA-17/39 : Author(s): S. Parker and S. Mormede

10. Recent information relevant to squid resources in the Convention Area

    Abstract:  In 1995 there was increased interest in fishing for Martialia hyadesi in waters ... adjacent to the Convention Area, with a catch in excess of 12,000 tonnes. Recent improvements in processing ... techniques for this squid also enhance commercial prospects and may promote interest in fishing in Convention ... waters. Although regulations for fishing of squid in nearby waters provide a useful model framework ...

    Meeting Document : SC-CAMLR-XIV/BG/22 Rev. 1 : Author(s): Delegation of the United Kingdom

Pages