Search results
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Pre-spawning and spawning biology of the Patagonian toothfish, Dissostichus eleginoides, around South Georgia (Subarea 48.3)
Abstract: Samples gathered from research expeditions of the longliners Medvezhy (April-June 1986 ... ) as well as Maksheevo and Mirgorod (June-July 1992) have produced new data on the biology of the ... reproductive part of the Dissostichus eleginoides population in Subarea 48.3. Analysis and synthesis of these ... data have established the bathymetric distribution patterns for different size-groups of toothfish ...
Meeting Document : WG-FSA-92/13 : Author(s): I.N. Konforkin and A.N. Kozlov (VNIRO, Moscow, Russia)
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Bycatch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in Statistical Area 58 (January to March 1995)
Abstract: A final report of scientific observations conducted aboard the Japanese krill fishing ... vessel Chiyo Maru No. 2 was presented to the first meeting of WG-EMM. The WG-EMM welcomed the report but ... . This manuscript presents a brief reanalysis of the bycatch data collected onboard the Chiyo Maru No. 2 ... ; means and variances are calculated according to the methods of Aitchison (1955) and Pennington (1983 ...
Meeting Document : WG-FSA-95/40 Rev. 1 : Author(s): Watters, G.
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Estimating the abundance of pack-ice seals off east Antarctica
Abstract: A survey was undertaken to provide estimates of the abundance of crabeater, Ross and ... leopard seal populations in 1,500,000 km2 of pack-ice off east Antarctica between longitudes 60-150oE ... . Sighting surveys were undertaken along almost 10,000 km of survey transect from an icebreaker and two ... helicopters to estimate the density of seals hauled out on the ice in survey strips. The probability of ...
Meeting Document : WG-EMM-05/23 : Author(s): C. Southwell (Australia), D. Borchers, C. Paxton (United Kingdom), B. de la Mare (Canada), P. Boveng (USA), A.S. Blix and E.S. Nordoy (Norway)
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An attempt to derive a composite index of abundance from acoustic surveys and fishery data
Abstract: Maps of krill (Euphausia superba) density derived from acoustic survey data and the ... distribution of fishing effort in the Chilean krill fishery indicate an area of high krill density wrapping ... around the northwestern end of Elephant Island during the austral summer of 1992. In this area, the ... distribution of catch-per-fishing-time and krill density (measured acoustically) show similar forms. Search ...
Meeting Document : WG-Krill-94/14 : Author(s): R.P. Hewitt (USA), V. Marín (Chile) and D. Demer (USA)
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Cephalopod diet of the southern elephant seal (Mirounga leonina) at King George Island, South Shetland Islands
Abstract: In the austral summer of 1995/96, 25 southern elephant seals, Mirounga leonina, were ... present in 72% of the individuals sampled (n=18). Seven species of squid and 3 of octopus were identified ... . Overall, the squid species Psychroteuthis glacialis was by far the most important prey in terms of numbers ... (77%), biomass (80.8%) and frequency of occurrence (94.4%). Next in importance in terms of mass in the ...
Meeting Document : WG-EMM-99/13 : Author(s): G.A. Daneri, A.R. Carlini (Argentina) and P.G.K. Rodhouse (United Kingdom)
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Proposal for an extension to the mark-recapture experiment to estimate toothfish population size in the South of Subarea 48.4
Abstract: A three‐year tagging study in the South of Subarea 48.4 was initiated in the 2008/09 ... fishing season with the aims of providing the data required for assessments of the population structure ... , size, movement and growth of both Dissostichus eleginoides and Dissostichus mawsoni in the South of ... 48.4; A total of 186 D. eleginoides and 202 D. mawsoni were tagged and released in 2010, leaving a ...
Meeting Document : WG-FSA-10/40 : Author(s): J. Roberts and D. Agnew (UK)
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Age validation of juvenile Notothenia rossii at Potter Cove, South Shetland Islands, using mark-recapture data
Abstract: Among all validation methods of age determination in fish, release of known age and ... principle of annual deposition of an annulus in scales and otoliths. Of 132 juvenile specimens (TL = 22.1 ... after periods of 1–13 months. In scales of five specimens recovered after 10–13 months, one extra ... annulus was laid down, exhibiting an additional winter zone of closely spaced sclerites. Consistently, the ...
Meeting Document : WG-FSA-13/P01 : Author(s): E. Moreira, E. Barrera-Oro and M. La Mesa
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Larval development and spawning ecology of euphausiids in the Ross Sea and its adjacent waters in 2004/05
Abstract: The horizontal and vertical distributions of larvae and reproductive timing of ... . Occurrences of larvae of Euphausia frigida and E. triacantha were confined to the northern oceanic area where ... distribution further southward to the area where cooler Lower Circumpolar Deep Water prevailed. Larvae of ... juvenile or adult stages. Eggs and larvae of E. superba occurred with gravid females along the slope, but ...
Meeting Document : WG-EMM-10/P06 : Author(s): K. Taki, T. Yabuki, Y. Noiri, T. Hayashi and M. Naganobu
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 2000 winter and the 2000/01 breeding season
Abstract: Results of the survey of entanglements of Antarctic fur seals at Bird Island, South ... reported here. The number of entanglements showed an increase from recent years, with 20 entanglements ... entanglements over the 2000 winter than in 1999; some of which can be explained by interannual variation in the ... injuries accounted for 35% of entanglements over winter and 23% during the summer. As in previous years ...
Meeting Document : SC-CAMLR-XX/BG/03 : Author(s): Delegation of the United Kingdom
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Factors affecting the growth rate and mass at weaning of Antarctic fur seal pups at Bird Island, South Georgia
Abstract: We studied the influence of sex of pup, maternal age, birth date of pup, number of ... foraging trips, and the mean duration of both foraging trips at sea and nursing visits ashore on the growth ... and mass at weaning of pups of Antarctic fur seals (Arctocephalus gazella) during the austral summers ... of pup and mean duration of foraging trips. Growth rates of male and female pups varied considerably ...
Meeting Document : WG-CEMP-93/09 : Author(s): N.J. Lunn, I.L. Boyd, T. Barton and J.P. Croxall (United Kingdom)