Search results
-
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 : Author(s): G.A. Daneri, A.R. Carlini, C.M. Hernandez and A. Harrington (Argentina)
-
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 : Author(s): A. Brandão, D.S. Butterworth, B.P. Watkins and L. Staverees (South Africa)
-
A PROPOSAL TO AMEND CONSERVATION MEASURE 21-03 WITH REGARDS TO THE USE OF NEW FISHING GEAR IN THE KRILL FISHERIES (AND SUBSEQUENT AMENDMENT TO CONSERVATION MEASURE 21-01)
Abstract: At CCAMLR XXVI there was significant discussion in the Commission regarding a ... notification to conduct pair trawling operations in the krill fisheries in the 2007/08 season. During the ... discussion it was suggested that as the pair trawling method had not previously been used in the CCAMLR Area ... and there were no established data collection and analysis methods, the use of pair trawling in the ...
Meeting Document : CCAMLR-XXVII/36 : Author(s): Delegation of Australia
-
Preliminary results on the distribution and abundance of Antarctic krill (Euphausia superba) in the Weddell Sea, Southern Ocean
Abstract: Hydroacoustic data were collected to study the distribution and abundance of Antarctic ... krill relative to their predators in the Southern Ocean during annual logistic summer trips and ... dedicated research winter trips to Antarctica on board the South African RV SA Agulhas II. The 38, 120 and ... 200 kHz transducers mounted on the drop keel of the research vessel were used to collect acoustic data ...
Meeting Document : SG-ASAM-18/09 : Author(s): F.W. Shabangu
-
PROPOSED SMALL-SCALE MANAGEMENT UNITS FOR THE KRILL FISHERY IN SUBAREA 48.4 AND AROUND THE SOUTH SANDWICH ISLANDS
Abstract: Relatively little ecological information is available for the South Sandwich Islands ... , so the diversity of information available to determine potential SSMU boundaries is limited ... . Nevertheless, a suggested SSMU is proposed, based on the foraging distance of the most abundant land-based ... consumer of krill breeding on the islands, the chinstrap penguin. The proposed SSMU represents a single ...
Meeting Document : WG-EMM-08/11 : Author(s): P.N. Trathan, A.P.R. Cooper and M. Biszczuk (United Kingdom)
-
Preparing for the Year of the Skate: proposed information collection and tagging protocol for skates
Abstract: Skates are an important bycatch of the toothfish fishery in the CCAMLR area and have ... -SAM paragraph 8.10) a review of data requirements and a “Year of the Skate” for 2008–09 whereby data ... skate assessment. This paper discusses improvements to the fishery derived data that may be required to ... better inform an assessment of Ross Sea skates. We propose options for the appropriate collection of such ...
Meeting Document : WG-FSA-07/39 : Author(s): S. Mormede, A. Dunn, J. Fenaughty, M. Francis, S. Hanchet, R. O’Driscoll and N. Smith (New Zealand)
-
Standing stock, biology, diet and spatial distribution of demersal finfish from the 2003 US AMLR bottom trawl survey of the South Shetland Islands (Subarea 48.1)
Abstract: The United States Antarctic Marine Living Resources (U.S. AMLR) program has conducted ... bottom trawl surveys of the South Shetland Islands (Subarea 48.1) during the 1998, 2001, and 2003 austral ... patterns from the 2003 survey is presented. The spatial distributions and standardized densities for ... importance for krill, fish, and benthic feeding guilds based on stomach content analysis demonstrate the most ...
Meeting Document : WG-FSA-03/38 : Author(s): C.D. Jones (USA), K.-H. Kock, (Germany), J. Ashford, A. DeVries, K. Dietrich (USA), S. Hanchet (New Zealand), T. Near, T. Turk (USA) and S. Wilhelms (Germany)
-
A multiple-frequency method for identifying and assessing the Antarctic krill stock in the Ross Sea (1989/90, 1997/98 and 1999/2000)
Abstract: The paper describes the criteria, based on the multiple frequency analysis, used in the ... Italian expeditions to the Ross Sea to discriminate Euphausia superba (krill) aggregations from Euphausia ... crystallorophias ones and from other scatters. They are based on the experimental data acquired in the expeditions ... applied to estimate krill biomass in the area of Ross Sea (22000 nm2), investigated from 19 to 26 December ...
Meeting Document : WG-EMM-00/37 : Author(s): M. Azzali, J. Kalinowski and G. Lanciani (Italy)
-
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 : Author(s): D. Maschette, D.C. Welsford and C. Gardner (Australia)
-
Assessment of fishable krill biomass on the basis of the acoustic surveys results using geostatistical methods
Abstract: ABSTRACT Applicability of geostatistical methods in processing the acoustic fields of ... krill density based on the acoustic survey data is demonstrated. The results obtained indicate ... usefulness of these methods in studying the structure of krill density field for biomass assessment in ... compliance with different thresholds of their fishery importance. The structure of krill density field in ...
Meeting Document : WG-SAM-10/07 Rev. 1 : Author(s): S.M. Kasatkina and P.S. Gasyukov (Russia)