Search results
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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
for the fifth consecutive winter and seventh consecutive summer at Bird Island, South Georgia. The three animals ... % lower than in 1993 and 97% lower than the record 1992 winter. Nearly all animals involved were 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 showing severe ...
Meeting Document : SC-CAMLR-XIV/BG/08 : Author(s): Delegation of the United Kingdom
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Entanglement in man-made debris of Antarctic fur seals at Bird Island, South Georgia
. This represents at least 0.1% of the total Bird Island population and a minimum of 0.4% of animals in the best ... accounted for 71% of entanglements, 88% of which were of young (1-4 years old) animals; females accounted ... for 64% of animals older than this. Obvious physical injury was being caused to 30% of animals and only ... on 19% of animals was the collar loose enough potentially to come off. The magnitude of the problem ...
Meeting Document : CCAMLR-VIII/BG/05 : Author(s): J.P. Croxall, S. Rodwell and I.P. Boyd (United Kingdom)
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A study of Patagonian toothfish (Dissostichus eleginoides) post tagging survivorship in Subarea 48.3
. On one vessel fish with a variety of injuries were selected to see if this affected recovery. 395 animals ... differences between vessels, and smaller animals and animals in better initial condition had a slightly higher ... suggest that experienced observers using animals in good condition would normally achieve a survivorship ... . On one vessel fish with a variety of injuries were selected to see if this affected recovery. 395 animals ...
Meeting Document : WG-FSA-05/19 : Author(s): D. J. Agnew, J. Moir Clark, P.A. McCarthy, M. Unwin, M. Ward, L. Jones (United Kingdom), G. Breedt, S. Du Plessis, J. Van Heerdon (South Africa) and G. Moreno (Spain)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1993 winter and 1993/94 pup-rearing season
and 1991. Nearly all animals were juveniles, half with severe injuries and the proportion of females (40 ... %) was the highest yet reported. The proportion of animals entangled in packaging bands was the lowest ever (24 ... animals were entangled in net fragments (35%) than in packaging bands (30%), the decrease in the latter ... mirroring the records of the preceding winter. However, 68% of animals affected were female (previous ...
Meeting Document : SC-CAMLR-XIII/BG/03 : Author(s): Delegation of United Kingdom
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Depth distribution and spawning pattern of Dissostichus eleginoides over the winter period in Subarea 48.3
seasons, suggesting movement of animals both up and down slope at particular times of year. Months ... with movement of animals to preferred spawning depths. A general model would be that toothfish form spawning ... groupings at about 1000-1300m depth. Just prior to spawning, animals move (generally downslope ... Rocks and South Georgia, but there is some evidence for exchange of animals immediately post spawning ...
Meeting Document : WG-FSA-98/58 : Author(s): D.J. Agnew, K. Kerkieta, L. Heaps, C. Jones, J. Pearce and A. Watson (United Kingdom)
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Heart rate and behaviour of fur seals: implications for measurement of field energetics
/min among animals. Morphometrics explained most variations in heart rate among animals ... of recording. Heart rate averaged 108.7 ± 17.7 beats/min (SD) but varied from 83 to 145 beats/min among animals ... . Morphometrics explained most variations in heart rate among animals. These interacted with diving activity ... ) variation among animals in the degree of diving bradycardia. On average, heart rate declined from 100-130 ...
Meeting Document : WG-EMM-99/36 : Author(s): I.L. Boyd, R.M. Bevan, A.J. Woakes and P.J. Butler (United Kingdom)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Bird Island, South Georgia during the 1998 winter and 1998/99 pup-rearing season
on the 1997 winter total and an 87 % decrease on the highest previous total (1992). The proportion of animals ... records started. Two animals (15 %) were entangled in polypropylene straps, down by 50 % on the 1997 ... but 88 % less than the highest previous total (1988/89). The proportion of adult animals affected ... of animals showing severe injuries (30 %) was a contrast to 1997/98 when none was noted. Entanglements ...
Meeting Document : SC-CAMLR-XVIII/BG/05 : Author(s): Delegation of the United Kingdom
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An index of per capita recruitment
)eM where R1 is the proportion of age-1 animals sampled in year y and M is the post-recruit mortality ... does not vary over age or between years; 2) 100% of age-1 animals spawn; 3) a representative sample ... of the population is available; and 4) the proportion of age-1 animals in the sample can be determined unambiguously ... is constant over all ages and years, and when all age-1 animals spawn. These conclusions are insensitive ...
Meeting Document : WG-EMM-99/50 : Author(s): R. Hewitt (USA)
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How many krill should we measure?
of 2000 animals per sample, comparisons were made in mean body length and cumulative frequency ... distribution with less number of measurements. Measurements on 50 animals seem enough to obtain reliable ... animals per sample, comparisons were made in mean body length and cumulative frequency distribution ... with less number of measurements. Measurements on 50 animals seem enough to obtain reliable estimates ...
Meeting Document : WG-KRILL-90/26 : Author(s): Y. Endo (Japan)
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Growth per molt of male snow crab Chionoecetes opilio from Conception and Bonavista Bays, Newfoundland
, Newfoundland, in order to estimate the increase in size at the time of molting. Ninety-two animals were ... this interpretation. First, animals in the group presumed to have molted twice were at liberty on average twice ... animals. The molt increments appear similar to those observed from Conception Bay. Author(s): D.M. Taylor ... , in order to estimate the increase in size at the time of molting. Ninety-two animals were recaptured which ...
Meeting Document : WS-CRAB-93/12 : Author(s): D.M. Taylor and J.M. Hoenig (USA)