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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Bird Island, South Georgia during the 1997 winter and 1997/98 pup-rearing season
. Only seven seals were observed entangled in the winter, a drop of 59% from 1996. Four of these records ... were from adult females, a much higher proportion than in previous years. The number of entanglements ... in the summer was the lowest recorded to date, being 52% lower than in 1996/97. The percentage of ... mainly of juvenile fur seals, with equal numbers of each sex when identified. The observed drop in ...
Meeting Document : SC-CAMLR-XVII/BG/11 : Autor(es): Delegation of the United Kingdom
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Dynamics of Antarctic krill in the Bransfield Strait during austral summer and autumn investigated using acoustic data from a fishing vessel
fishing vessels might help provide such insight. In the present work, the dynamics of krill with regards ... integration assuming they constituted the bulk of krill biomass. Our results indicated a major shift in mid ... daytime in May, and also a shift in the length distribution of krill. The results strongly support recent ... operated in areas of very high swarm encounter rates, and that the trawling occurred on the highest krill ...
Meeting Document : WG-EMM-17/40 : Autor(es): X. Wang, G. Skaret, O.R. Godø and X. Zhao
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Report of biological observations carried out on board the krill fishing vessel More Sodruzhestva in April to August 1991
dominant in catches taken in April/May in the north-west of Subarea 48.2. Krill of modal sizes 31 to 32 mm ... and 35 to 36 mm made up the bulk of catches in the south-east of the subarea. No by-catch of juvenile ... fish was observed in Subarea 48.2. Krill of the following three modal groups was dominant in Subarea ... these subareas during the period 17 to 23 May 1991. Sightings of marine mammals and birds in the ...
Meeting Document : WG-KRILL-92/06 : Autor(es): V.I. Latogursky (Russia)
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Microincrement analysis in otoliths of Notothenia rossii fingerlings from the South Shetland Islands to estimate early life history timings and to validate annulus formation
distribution of fish sampled in spring 2010 showed the simultaneous presence of two different cohorts ... , belonging to biological ages 0+ and 1+ that hatched respectively in summer and winter. The growth rate of N ... : Microincrement analysis in otoliths of Notothenia rossii fingerlings from the South Shetland Islands to estimate ... phase fingerlings selected from a total sample of 364 early juveniles caught mainly in summer from 2003 ...
Meeting Document : WG-FSA-12/04 : Autor(es): E. Barrera-Oro (Argentina) and M. La Mesa (Italy)
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Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Subarea 48.6 by South Africa and Japan
estimate the biomasses of D. mawsoni because the recaptures were concentrated in the southern area. In ... consistent with the observed numbers for D. mawsoni in the southern area of block 48.6_2, and blocks 48.6_3 ... . We estimated predicted numbers of recaptures in the next three years using present catch limit and ... northeastward extension of the current research block 48.6_2 in order to elucidate the stock structure. Details ...
Meeting Document : WG-SAM-16/07 : Autor(es): Delegations of Japan and South Africa
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Preliminary assessment of mackerel icefish, Champsocephalus gunnari, on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
approximately 20% of the 2002 estimate. This decline in abundance is consistent with the passage of the strong ... evident in the survey were not fully sampled and as such are not included in the assessment. Estimates of ... in recruitment, natural mortality and growth of these fish, combined with the need to maintain a ... steady yield if possible need to be explored further in the development of a management procedure that ...
Meeting Document : WG-FSA-03/32 : Autor(es): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)
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Summer distribution, abundance and structure of krill populations (Euphausia superba and Euphausia crystallorophias) sampled by plankton net in the western Ross Sea (January–February 2000)
double oblique tow. Mean relative biomass of Antarctic krill Euphausia superba, in the area north of ... dominance in the High Antarctic Zone (south of 74°), with a mean relative biomass of 3.0 (±26%) g/l000m3 and ... mean density of 16.8 (±10%) individuals per 1000m3. The present data have demonstrated that in the Ross ... analysed. This indicated that the composition of the aggregations in terms of the mean length, sex ratio ...
Meeting Document : WG-EMM-00/38 : Autor(es): M. Azzali, A. Sala and G. Brancato (Italy)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1994 winter and 1994/95 pup-rearing season
juveniles. Of entangled animals the proportion of males affected was 67%, approximately the same as in 1993 ... and 1991, but two-thirds of the value recorded in 1990 and 1992. The proportion of entangled animals ... 1994 winter. In the 1994/95 summer the number of entangled seals (20) was also the lowest yet recorded ... Abstract: Surveys of Antarctic fur seals entangled in man-made marine debris were carried out for ...
Meeting Document : SC-CAMLR-XIV/BG/08 : Autor(es): Delegation of the United Kingdom
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Notothenia (p.) gibberifrons Stock Status and TAC Estimation in the Area of Shag Rocks (Subarea 48.3)
-term mean (5947 million specimens), the abundance of N. guntheri in 1987/77 was 152 thousand tons. Then ... ) Fishing intensity in the predicted period is at the level of 1987/88; c) Fishing intensity in the ... ) Title: Notothenia (p.) gibberifrons Stock Status and TAC Estimation in the Area of Shag Rocks (Subarea ... the mean value of fishing mortality for the main commercially taken age groups (2- 4 years); b ...
Meeting Document : WG-FSA-88/33 : Autor(es): R. Borodin and K. Shust (USSR)
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Trophic interactions and population trends of killer whales (Orcinus orca) in the southern Ross Sea
coincident with a decrease in the number and size of an important prey: Antarctic toothfish (Dissostichus ... contrast, the prevalence of the larger, mammal-eating Type-B killer whales has not changed in the southern ... small penguins, such as Adélies (Pygoscelis adeliae), are presented. In the case of both killer whale ... forms, the progressive seasonal breakup of fast ice in large bays bordering the Ross Sea likely provides ...
Meeting Document : WG-FSA-12/P03 : Autor(es): D.G. Ainley and G. Ballard