Resultados de la búsqueda
-
Estimation of total removals (green weight)
Abstract: Through an in-depth discussion at the WG-EMM regarding green-weight estimation in the ... krill fishery, the Working Group recognised importance of obtaining detailed information on the methods ... by which green weight is estimated. The Report of WG-EMM included an appendix that describes this ... issue in detail and identifies a process by which the required information and data could be acquired ...
Meeting Document : SC-CAMLR-XXXI/BG/15 : Autor(es): Co-conveners of the Working Group on Ecosystem Monitoring and Management
-
Age and growth of Antarctic Euphausiacea (Crustacea) under natural conditions
regressions. No difference in growth of krill were observed between the Antarctic Peninsula area and the ... Abstract: Five species of Antarctic euphausiid crustaceans were studied from the Antarctic ... years for the krill Euphausia superba. Growth in length and weight was calculated by non-linear ... shorter life span than females, while their growth rate is similar. A short description of the life cycle ...
Meeting Document : SC-CAMLR-VI/BG/24 : Autor(es): V. Siegel (FRG)
-
Integrated environment–prey–predator interactions off South Georgia: implications for management of fisheries
local productivity, leads to relatively large concentrations of krill (Euphausia superba) in the region ... account for interannual variability in krill populations and the food requirements of natural predators ... Abstract: The oceanography of the South Georgia region is principally that of the Southern Ocean ... rather than the South Atlantic. A combination of factors, including advection, local bathymetry and high ...
Meeting Document : WG-EMM-01/27 : Autor(es): I.L. Boyd (United Kingdom)
-
Stomach flushing of Adelie penguins (CEMP Method A8)
found to be empty of food be included in the data set if they are bona fide breeders. It also suggests ... crystallorophias) and may underestimate the importance of E. superba in the diet of penguins from some region ... the water from samples, an extension of the sampling period to include the guard phase, and that birds ... that the first regurgitate of each sample be kept separate from the remainder because it often consists ...
Meeting Document : WG-EMM-95/32 : Autor(es): Clarke, J.
-
Development of an algorithm designed to assess observer data quality and performance
observers in their logbooks. A first version of the algorithm was tested on four randomly selected longline ... worksheets, which displaces data and results in the importation of the wrong data by the algorithm and ... Abstract: As part of the Secretariat task to ensure the quality and consistency of the data ... fishery logbooks. In its current version the algorithm is able to detect and report invalid data formats ...
Meeting Document : WG-SAM-13/40 : Autor(es): Secretariat
-
Diet of cape petrel, Daption capense, during late incubation and chick rearing period, at Laurie Island, South Orkney Islands, Antarctica
Abstract: The diet of Cape petrel was investigated on Mossman Hills, Laurie Island, South Orkney ... , during late incubation and chick-rearing period. The analysis of the samples showed that Euphausiids were ... by far the main prey. Antarctic krill Euphausia superba constituted the bulk of the diet ... conducted during the same period of the life cycle. Author(s): Coria, N.R., Montalti, D., Soave, G.E. Title ...
Meeting Document : WG-EMM-95/85 : Autor(es): Coria, N.R., Montalti, D., Soave, G.E.
-
AGE AND GROWTH OF SPINY ICEFISH, CHAENODRACO WILSONI REGAN, 1914, OFF JOINVILLE-D'URVILLE ISLANDS (ANTARCTIC PENINSULA)
polishing whole otoliths embedded in epoxy resin in moulds. The precision of age estimates between readings ... maturity and a considerable short life span. The fish population of C. wilsoni caught in the studied area ... January 2007. A total of 218 specimens were selected for the study, consisting of 120 females and 98 males ... . The age of fish was estimated by counting annuli on transverse sections obtained by grinding and ...
Meeting Document : WG-FSA-08/33 : Autor(es): M. La Mesa, A. De Felice (Italy), C.D. Jones (USA) and K.-H. Kock (Germany)
-
Method of age determination for Antarctic toothfish (Dissostichus mawsoni)
. All in all 6009 specimens of toothfish were aged using the same above described method. Otoliths were ... Abstract: This work is based on material from Antarctic toothfish, collected in the Ross Sea from ... widely applicable "the break and burn method" was used in the present work (Chilton, Beamish ... December 2004 to March 2005 on the longliner “Volna”. Age was determined for 364 individuals. Currently ...
Meeting Document : WG-SAM-12/18 : Autor(es): E.N. Kyznetsova, A.F. Petrov and V.A. Bizikov (Russia)
-
Estimates of natural and fishing mortality from toothfish mark–recapture and catch-at-age data at South Georgia
mark-recapture models of this type. Given the increasing number of releases and recaptures in all the ... data from all the analysed cohorts in the estimation routine, and we examine the potential estimation ... bias, using simulated data. The results confirm earlier findings, with lower estimates of natural and ... estimates of the exploitation rate predicted by the full assessment models, currently being implemented ...
Meeting Document : WG-FSA-06/54 : Autor(es): R.M. Hillary and D.J. Agnew (United Kingdom)
-
OCEANIC CIRCUMPOLAR HABITATS OF ANTARCTIC KRILL
inner shelf whereas in the Indian-Pacific sectors krill prevail in the ocean within 200-300 km of the ... ACC as the season progressed. The retention of krill in moderately productive oceanic habitats is a ... , with 70% of the total stock concentrated between 0o and 90oW. Within this Atlantic sector, krill are ... shelf break. Overall, 87% of the total stock live over deep oceanic water (>2000 m) and krill occupy ...
Meeting Document : WG-EMM-08/P04 - Abstract : Autor(es): A. Atkinson, V. Siegel, E. A. Pakhomov, P. Rothery, V. Loeb, R.M. Ross, L.B. Quetin, K. Schmidt, P. Fretwell, E.J. Murphy, G.A. Tarling and A.H. Fleming