Resultados de la búsqueda
-
Autoliners and seabird by-catch: do line setters increase the sink rate of integrated weight longlines?
vessels in the Kerguelen and Crozet Islands Patagonian toothfish fisheries to deter seabirds, ostensibly ... by expediting gear sink rates. A trial was conducted in the Ross Sea in 2007 to determine the ... effectiveness of line setters in increasing sink rates of IW longlines. Time-depth recorders were deployed along ... longlines set with and without a line setter were identical, including in the first few metres of the water ...
Meeting Document : WG-FSA-07/13 : Autor(es): G. Robertson (Australia), J. Williamson, M. McNeill (New Zealand), S. Candy (Australia) and N. Smith (New Zealand)
-
Using carapace measurements to determine the sex of Antarctic krill (Euphausia superba)
Abstract: Krill carapaces measurements have been used to reconstruct krill length frequencies in ... populations. The equations have been applied to fur seal diet studies in the South Shetlands but until now ... independently derives sex-specific regression models for krill collected in the South Shetlands. Allometric ... derived from mature krill in years following significant recruitment events with large proportions of ...
Meeting Document : WG-EMM-05/26 : Autor(es): J.D. Lipsky, M.E. Goebel, C.S. Reiss and V. Loeb (USA)
-
New data on Antarctic toothfish and some others by-catch fishes fecundity with gonads histological pictures from Ross Sea region and data on Patagonian toothfish from the Argentina Sea
Abstract: Results of samples’ processing fixed from Sub-area 88.1 in the 2003-2004 season aboard ... f/v «Yantar» operating in the Exploratory Fishery were presented. According to the results of ... north of 70° S. It was demonstrated that some part of females participated in spawning not every season ... toothfish gonads’ maturity in Argentina Sea in March, 2004 is discussed. Author(s): V.G. Prutko and L.A ...
Meeting Document : WG-FSA-05/28 : Autor(es): V.G. Prutko and L.A. Lisovenko (Russia)
-
Beach debris survey – Main Bay, Bird Island, South Georgia 2000/01
of 408 items recorded in 1999/00 and the lowest levels of summer beach debris (147 items) since the ... 1994/95 season. The difference between the number of items collected in the summer and winter months is ... the lowest since reporting began, with only 4 items more collected in the summer than in the winter ... ), but to a lesser extent than in previous years, whilst miscellaneous debris accounted for almost as ...
Meeting Document : SC-CAMLR-XXI/BG/03 : Autor(es): Delegation of the United Kingdom
-
Fishing cruise of the Russian trawler Zakhar Sorokin to the Antarctic (Subarea 48.3) from 16 February to 10 March 1999
Sorokin" carried out fishery for icefish Gunnari in CCAMLR subarea 48.3. During the cruise, 88 hauls ... , therefore, formed dense commercial concentrations. In this period, catches constituted 3,4 t per trawling ... scientists, having large experience in fisheries and research in this area, the results of the cruise have ... gunnari stock in the subarea 48.3 Author(s): V.L. Senioukov and P.N. Kochkin (Russia) Title: Fishing ...
Meeting Document : WG-FSA-99/57 : Autor(es): V.L. Senioukov and P.N. Kochkin (Russia)
-
ANALYSIS OF ICE-FISH (CHAMPSOCEPHALUS GUNNARI) SPATIAL DISTRIBUTION FOR OPTIMIZATION OF THE BOTTOM TRAWL SURVEY SAMPLING
Abstract: Acoustic and trawl samples obtained in the near-bottom layers covered by bottom trawl ... surveys in the South Georgia area are analyzed. The high heterogeneity of horizontal and vertical fish ... distribution in the near-bottom layers within the surveyed area is shown. Influence of this fish distribution ... Russian and UK bottom surveys carried out in the South Georgia area during season’s 2000 and 2002, it is ...
Meeting Document : WG-SAM-09/20 : Autor(es): S.M. Kasatkina (Russia)
-
UNDERWATER ACOUSTIC INSTRUMENTATION FOR ANTARCTIC APPLICATIONS
Abstract: In order to describe an aquatic ecosystem scientists require a variety of information ... distributions, behavior in space and time, and links to other environmental information such as habitats ... vessels. In this paper a variety of underwater acoustic technologies are presented to serve as input for ... , potentially commercial fishing vessels, and other types of installations in order to obtain improved ...
Meeting Document : SG-ASAM-09/09 : Autor(es): L. Andersen (Norway)
-
Performance of an acoustic sonde design
is widely recognized. At a U.S. GLOBEC workshop in 1991, one of the considered problems was measuring ... macrozooplankton and micronekton. It was concluded that in order to survey animals in the size range 0.5-5 cm, it ... would be expedient to use at least three and perhaps as many as 8-10 frequencies in the range 38-420 kHz ... heat generation in ceramic elements, isotropic ambient noise, and detection threshold of 20 dB. Target ...
Meeting Document : WG-EMM-95/09 : Autor(es): Foote, K.G.
-
ANALYSIS OF ROSS SEA TAGGING AND RECAPTURE RATES
year and recapture year for tags released and recaptured in the same SSRUs on the slope of 88.1 was ... (caught), all in numbers. 2. The overall size of the dataset was 734 combinations of release year ... has not been consistent enough between nations to allow the analysis to be definitive. In many cases ... , release or recapture nation effects were not significant. In the cases where significant differences ...
Meeting Document : WG-SAM-08/07 : Autor(es): D.J. Agnew (UK)
-
Composition and vertical distribution of the benthopelagic ichthyofauna of the southern part of the Kerguelen ridge
Abstract: AS many as 18 species of benthopelagic fishes belonging to 12 families were caught in ... trawls during the integrated surveys in December 1977 and in January 1978 on Elan Bank consisting of two ... found both species inhabiting exclusively in sub-Antarctic and Antarctic waters (endemies) and those ... of fish species, their numbers, however, being the smallest in those particular depths. Sub-Antarctic ...
Meeting Document : WG-FSA-96/13 : Autor(es): Piotrovsky, A.S.