Resultados de la búsqueda
-
Descriptive analysis of acoustic data collected during the 2003 exploratory fishery for toothfish in the Ross Sea
conducting acoustic surveys for toothfish and rattails in the Ross Sea. Acoustic data were collected during ... bottom echo caused by too high a ping rate. All line recordings were in water over 1000 m deep. Because ... avoided with the use of a towed acoustic system. Two types of pelagic layers were present in most acoustic ... recordings: a dense shallow layer between 30 and 200 m; and a more diffuse deep scattering layer between 300 ...
Meeting Document : WG-FSA-03/28 : Autor(es): R.L. O’Driscoll and G.J. Macaulay (New Zealand)
-
Factors affecting the number and mortality of seabirds attending trawlers and longliners in the Kerguelen area
and trawlers fishing in the Kerguelen area were studied during four successive seasons (1994-1997 ... were caught by fishing gears mainly by long-lines, in order of importance white-chinned petrels, black ... susceptible of being caught than others. White-chinned and grey-headed albatrosses appear to be caught in much ... larger proportion than the number of potential by-catch present, whereas black-browed are caught in lower ...
Meeting Document : WG-FSA-99/26 : Autor(es): H. Weimerskirch, D. Capdeville and G. Duhamel (France)
-
Stable isotope analysis of tissue samples to investigate trophic linkages of Antarctic toothfish (Dissostichus mawsoni) in the Ross and Amundsen Sea regions
– 2 years before capture (the likely turnover time of protein in fish muscle). The result is ... Abstract: Stable isotopes of carbon and nitrogen (δ 15 N and δ 13 C) in Antarctic toothfish ... (Dissostichus mawsoni) muscle were measured to study the trophic connections of Antarctic toothfish in the Ross ... lipid in muscle on δ 13 C in a way that did not compromise the accuracy of δ 15 N measurements. We found ...
Meeting Document : WG-EMM-14/50 : Autor(es): M.H. Pinkerton, S.J Bury, J.C.S. Brown, J. Forman and A. Kilimnik (New Zealand)
-
Fishing and conservation in southern waters
Abstract: Fishing in the Southern Ocean commenced on finfish in 1969/70 and on krill in 1972/73 ... and the Kerguelen Islands. After 15 years of exploitation, most fish stocks have been heavily depleted ... the by-catch of juvenile fish in the krill fishery, to incidental mortality of birds during longline ... operations and the entanglement of seals in fragments of discarded or lost fishing gear. Most fish stocks had ...
Meeting Document : SC-CAMLR-XII/BG/11 : Autor(es): Delegation of Germany
-
Natural mortality of grey rockcod (Notothenia squamifrons) in various areas of the Indian sector of the Southern Ocean
Paper Title: Natural mortality of grey rockcod (Notothenia squamifrons) in various areas of the ... were established to be 5.9, 5.2 and 7.6 years. The value for M in the Kerguelen Islands area is ... (NOTOTHENIA SQUAMIFRONS) IN VARIOUS AREAS OF THE INDIAN SECTOR OF THE SOUTHERN OCEAN A.K. Zaitsev ... on the Ob and Lena Banks these were 6.6 and 6.2 years respectively, while for the Kerguelen Islands ... area the value was 8.6 years. The calculated values of M were found to be the lowest among specimens ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 141–146 : Autor(es): Zaitsev, A.K.
-
Spatial and temporal distribution of krill Euphausia superba biomass in the Ross Sea (1989/90, 1994/95)
comparison the biomass from different years, the whole investigated area was divided in rectangles of 1°x30 ... biomass and what is its value. The hydroacoustic observations were done in the time when investigated area ... December- January). The process of ice melting began in mid November, near Ross Ice Shelf (so called ... polynia area) and moved towards North. All the time daytime was prevaled. Krill in aggregations both below ...
Meeting Document : WG-EMM-97/53 : Autor(es): Kalinowski, J., Azzali, M.
-
Patagonian toothfish in international waters of the Southwest Indian Ocean (Statistical Area 51)
Paper Title: Patagonian toothfish in international waters of the Southwest Indian Ocean ... , following commercial fishing procedures, in a restricted area south of Madagascar and north of Prince Edward ... made at depths between 360 and 1 950 m. D. eleginoides was present in all hauls, with catches varying ... located at the edge of the principal area of D. eleginoides concentration, in which a residual recruitment ... (2005): 207–214 207 PATAGONIAN TOOTHFISH IN INTERNATIONAL WATERS OF THE SOUTHWEST INDIAN OCEAN ... , in a restricted area south of Madagascar and north of Prince Edward and Marion Islands and the ... 950 m. D. eleginoides was present in all hauls, with catches varying from 53 to 1 158 kg. The ... area of D. eleginoides concentration, in which a residual recruitment effect persists. The total CPUE ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 207–214 : Autor(es): López Abellán, L.J
-
Sources of variance in studies of krill population genetics
Paper Title: Sources of variance in studies of krill population genetics Abstract / Description ... : There has been a long-term interest in the population genetics of Antarctic krill species because of ... resurgence of interest in identifying distinct stocks of swarming krill species has been driven by the ... population structure. More recent investigations using sequence variation in mitochondrial DNA (mtDNA) have ... , Vol. 9 (2002): 107–116 107 SOURCES OF VARIANCE IN STUDIES OF KRILL POPULATION GENETICS S.N. Jarman ... – simon.jarman@aad.gov.au Abstract There has been a long-term interest in the population genetics of Antarctic ... conservation. A recent resurgence of interest in identifying distinct stocks of swarming krill species has ... variation in mitochondrial DNA (mtDNA) have exposed genetic differentiation between samples taken from ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 107–116 : Autor(es): Jarman, S.N. and S. Nicol
-
Effect of line sink rate on albatross mortality in the Patagonian toothfish longline fishery
Paper Title: Effect of line sink rate on albatross mortality in the Patagonian toothfish longline ... vessels using bird-scaring lines and setting lines in propeller turbulence, longline sink rates >0.3 m ... in batches of 20 (= 960 snoods and hooks), with each batch extending 1 440 m along the hook line ... seabed between the first and last hooks in a set of 100-360 baskets would be 8.3-30 km respectively ... the In Sung 66 was 1/95 hooks, or 1 /30 S; weight pull- backs occurred about every 8 s. Hook-ups and ... (15 km + 20 m) or 4.5 tonnes of weight, which would have to be hauled in addition to the weight of ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 133–150 : Autor(es): Robertson, G.G
-
Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3
Paper Title: Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3 ... (1989) from the data obtained during the Chilean longline fishery in Subarea 48.3 (N = 7 848. The von ... : fishing site, fishing depth and hook type. It was determined that there were no significant differences in ... differences in M between fishing sites. On the other hand, when comparing various mean values of M for the ... Chilean longline fishery in Subarea 48.3 (N = 7 848). The von Bertalanffy growth parameters obtained ... type. It was determined that there were no significant differences in M estimated by fishing depth ... and hook type with different growth parameters although there were differences in M between fishing ... , captura total y una submuestra de 30 ejemplares por lance, de los cuales se obtuvo la composicion por ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Autor(es): Moreno, C.A. and P.S. Rubilar