Resultados de la búsqueda
-
Exploring age and growth dynamics of a historically overfished Sub-Antarctic fish species: The grey rockcod (Lepidonotothen squamifrons) in the vicinity of Heard Island and McDonald Island
Abstract: The grey rockcod (Lepidonotothen squamifrons) was fished to commercial extinction on ... the Kerguelen Plateau by unregulated fishing during the 1970s/80s. Since the mid-1990s little work has ... been performed to assess the status of this species within the Heard Island and McDonald Island region ... 24. Through the mapping of abundances the presence of three distinct geographical populations were ...
Meeting Document : WG-FSA-15/51 : Autor(es): D. Maschette, D.C. Welsford and C. Gardner (Australia)
-
A single-area stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the 2004/05 season
model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... ). A range of model sensitivities were examined, with the base case assuming the Ross Sea fishery as a ... , slope, and north). Model fits to the data were adequate, with the tag-release and recapture data ... providing the most information on stock size. Monte-Carlo Markov Chain (MCMC) diagnostics suggested some ...
Meeting Document : WG-FSA-05/33 : Autor(es): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)
-
Geographical differences in the condition, reproductive development, sex ratio, and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Statistical Subarea 88.1)
toothfish Dissostichus mawsoni from mid-December to early April during the 2000-01 to 2004-05 fishing ... seasons aboard the autoliner San Aotea II have been analysed. Results of this study indicate measurable ... differences in a number of indices from toothfish found on the Ross shelf proper, as distinct from those ... sampled on the more isolated seamounts and features to the north. These are length modal distribution, sex ...
Meeting Document : WG-FSA-05/52 : Autor(es): J.M. Fenaughty (New Zealand)
-
The diet of Antarctic fur seals, Arctocephalus gazella, at King George Island, during the summer–autumn period
Abstract: The diet of non breeding male Antarctic fur seals, Arctocephalus gazella, was ... , krill and fish were the most frequent prey, occurring in an average of 97% and 69% of samples (n=128 ... ), followed by Cephalopods (12%). Myctophids constituted almost 90% of the fish predated, being Electrona ... antarctica and Gymnoscopelus nicholsi the most abundant and frequent prey species. All fish taxa identified ...
Meeting Document : WG-EMM-04/4 : Autor(es): G.A. Daneri, A.R. Carlini, C.M. Hernandez and A. Harrington (Argentina)
-
The rate of incidental mortality of birds in the IUU longline fishery in Subarea 48.3
Abstract: Information on the rates of incidental mortality of birds experienced by IUU vessels is ... extremely difficult to obtain. CCAMLR has, in the past, used data from the 1997 legitimate fishery, when a ... large number of birds were caught and when the implementation of mitigation measures was low, to ... approximate the IUU situation. This paper describes analyses undertaken using the 1997 data to refine the ...
Meeting Document : WG-FSA-02/5 : Autor(es): D.J. Agnew and G.P. Kirkwood (United Kingdom)
-
An updated assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity and extension taking commercial catch-at-length data into account
Abstract: The CPUE-based Age-Structured Production Model (ASPM) assessment of this resource by ... available over the past year. This leads to an improved picture of resource status compared to a year ... are at variance with the observed length frequency distributions for the fishery. It is important that ... the assessment model be refined to provide a consistent explanation of all the available data, as this ...
Meeting Document : WG-FSA-02/76 : Autor(es): A. Brandão, D.S. Butterworth, B.P. Watkins and L. Staverees (South Africa)
-
Interannual variation in the autumn diet of the gentoo penguin Pygoscelis papua at Laurie Island, Antarctica
Abstract: The diet of the gentoo penguin Pygoscelis papua was investigated during three different ... migrant adults were sampled during 1993, 1995 and 1996. Fish were the most important prey by mass in 1995 ... largely the most important prey among the eleven crustacean taxa identified in the samples. Among fish ... , species of the family Nototheniidae predominated in the diet with G. gibberifrons as the most important ...
Meeting Document : WG-EMM-99/19 : Autor(es): N. Coria, M. Libertelli, R. Casaux and C. Darrieu (Argentina)
-
Avoidance of incidental mortality of seabirds and the implementation of Conservation Measure 169/XVII in Statistical Subarea 88.1 in the 1998/99 season
Abstract: New Zealand conducted Longline weighting trials during the 1998/99 fishery for ... provisions in Conservation Measure 169/XVII. The provisions included strictly applied line-weighting regimes ... and rigorous monitoring of line sink rates. In the trials, two autoline vessels set weighted longlines ... were used to record the actual sink rate achieved on 30% of all sets. For all sets combined the average ...
Meeting Document : WG-FSA-99/35 : Autor(es): J. Molloy and N. Smith (New Zealand)
-
The diet of toothfish species Dissostichus eleginoides Smitt and D. mawsoni Norman with overlapping distributions around the South Sandwich Islands, Southern Ocean
Abstract: The diet of Antarctic toothfish (Dissostichus mawsoni) and Patagonian toothfish (D ... . eleginoides) was examined around the south sandwich islands in the southern ocean, one of few regions with ... overlapping populations of the two species. Despite large differences in the proportion of stomachs containing ... muraenolepidids) and cephalopods (mainly Kondakovia longimana) comprising more than 90 % of the prey mass of both ...
Meeting Document : WG-FSA-11/P03 : Autor(es): J. Roberts, J. Xavier and D. J. Agnew
-
CPUES and body length of Antarctic krill during 1993/94 season in the fishing grounds around the South Shetland Islands
. Main fishing grounds were persistently formed in the north of Livingston Island throughout the season ... , and the west of Elephant Island from April to May. CPUEs showed the highest values at the height of ... summer (early February- early March) in the north of Livingston Island, and April at the west of Elephant ... Island. Krill with a modal length of 41-45mm were dominant in catches, almost same as the previous season ...
Meeting Document : WG-EMM-95/51 : Autor(es): Kawaguchi, S., Ichii, T., Naganobu, M.