Resultados de la búsqueda
-
Preliminary review of Antarctic toothfish maturity in the Ross Sea
toothfish Dissostichus mawsoni caught by Russian longliners in the Ross Ross Sea of the Pacific sector in ... was established that in the period of fishing, females and males with gonads at maturity stage III ... in the Ross Sea the termination of gonad maturity of toothfish takes place from March to April, and ... condition, and diameter of their large oocytes was 1075- 2331•10-6m in different years. Author(s): S.V ...
Meeting Document : WG-FSA-11/27 : Autor(es): S.V. Piyanova and A.F. Petrov (Russia)
-
MULTIPLE INDICATORS SUGGEST A STRONG ECOSYSTEM ANOMALY AT SOUTH GEORGIA IN 2009
local oceanographic and atmospheric conditions. Much of the observed variability in various fitness ... revealed a strong anomaly in early 2009. Above average sea temperatures, without any evidence of increased ... warm water inflow were followed by reduced icefish catches, a paucity of krill in icefish and penguin ... diets and low krill biomass in the regularly surveyed “Western Core Box”. Consequently many of the ...
Meeting Document : WG-EMM-09/23 : Autor(es): S. Hill, M. Belchier, M. Collins, S. Fielding, E. Murphy, P. Trathan, H. Venables and C. Waluda (United Kingdom)
-
QUANTIFYING MOVEMENT BEHAVIOUR OF VESSELS IN THE ANTARCTIC KRILL FISHERY
behaviour of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed ... longer distances moved between hauls in Area 48.1 compared to 48.2 and 48.3 reflecting the large number ... model suggested in late 1980s are proposed based on the results from this study. These analyses ... demonstrate the need for high quality year-round data on all vessels participating in the krill fishery to ...
Meeting Document : WG-EMM-09/P05 : Autor(es): S. Kawaguchi and S.G. Candy
-
ANTARCTIC TOOTHFISH STOCK ASSESSMENT IN DIVISION 58.4.1 ON THE BASIS OF CPUE DATA
Abstract: An attempt to use CPUE data based on data of erussian observers in the assessment of ... Antarctic toothfish stock in division 58.4.1 is made. Unlike some previous results obtained for this ... biomass in the Ross Sea. As a result of implementation of a dynamic production model, current biomass in ... : ANTARCTIC TOOTHFISH STOCK ASSESSMENT IN DIVISION 58.4.1 ON THE BASIS OF CPUE DATA Approval: Approved ...
Meeting Document : WG-SAM-09/12 : Autor(es): D. Vasilyev, K. Shust, V. Tatarnikov, I. Istomin and A. Petrov (Russia)
-
Echo integration in low signal to noise regimes: methods of noise estimation and removal
Abstract: The results of acoustic surveys, especially in low signal-to-noise regimes, are ... contribution to the above-threshold-signal cannot later be removed in post processing. The only solution is to ... log unthresholded data and to correct for noise in post processing. Integrated data collected at 120 ... requires that logged data have high resolution in both depth and distance. It can be applied so long as ...
Meeting Document : WG-EMM-97/74 : Autor(es): Higginbottom, I., Pauly, T.
-
An outline of the Antarctic research cruise by the Japanese RV Kaiyo Maru around the South Shetland Islands in 1994/95
Agency was conducted in the southwest of the Scotia Sea, especially in the vicinity of the South Shetland ... oceanographic and ecological survey in relation to the distribution and abundance of the Antarctic krill ... analytical studies are currently in progress. Author(s): Takao, T., Ogishima, T., Naganobu, M., Ichii, T ... South Shetland Islands in 1994/95 Approval: Approved ...
Meeting Document : WG-EMM-95/50 : Autor(es): Takao, T., Ogishima, T., Naganobu, M., Ichii, T., Kawaguchi, S.
-
Towards a new method for age determination in Antarctic krill, and evidence that krill shrink under natural conditions
maintained in conditions of low food availability. Recent studies have also demonstrated that E. superba ... individuals may be shrinking in the field during winter. If krill shrink during the winter, conclusions ... reached by length-frequency analysis may be unreliable. In this study, the correlation between the body ... -length and the crystalline cone number of the compound eye was examined. Samples collected in the late ...
Meeting Document : WG-Krill-94/17 : Autor(es): W. de la Mare (Australia)
-
The state of exploited fish stocks in the Southern Ocean - a review
until the season 1989/90. About two thirds of the catches have been taken in the Atlantic Ocean sector ... (mainly South Georgia) while the remaining one third originated primarily from the Kerguelen waters in the ... most heavily affected by fishing are those of Notothenia rossii in both sectors, Notothenia squamifrons ... in the Indian Ocean sector and of Champsocephalus gunnari in the South Orkney Islands/Antarctic ...
Meeting Document : SC-CAMLR-X/BG/13 : Autor(es): Delegation of Germany
-
Stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1991/91 season, using virtual population analysis
Abstract: An assessment of the Champsocephalus gunnari fishery in sub-area 48.3 using VPA from ... situation to assessments in 1989/90 with a decrease in overall biomass and recruitment over recent years ... catches in the near future on the basis of a target F is questioned Author(s): G. Parkes (United Kingdom ... ) Title: Stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea ...
Meeting Document : WG-FSA-91/15 : Autor(es): G. Parkes (United Kingdom)
-
Net escapement of Antarctic krill in trawls
Abstract: This document describes the aims and methodology of a three year project (commenced in ... 2012) entitled Net Escapement of Antarctic krill in Trawls (NEAT). The study will include a morphology ... . Results will be used to quantify the theoretic catch efficiency and escape mortality in different net ... selective properties for krill in different trawls. Author(s): B.A. Krafft (Norway), L.A. Krag, B. Herrmann ...
Meeting Document : WG-EMM-12/24 : Autor(es): B.A. Krafft (Norway), L.A. Krag, B. Herrmann (Denmark), A. Engås, S. Nordrum and S. Iversen (Norway)