Search results
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Estimating unaccounted fishing mortality in the Ross Sea and 88.2C–G bottom longline fisheries targeting Antarctic toothfish
activities. The level of mortality resulting from the loss of sections of bottom longline gear in the Ross ... . The level of mortality resulting from the loss of sections of bottom longline gear in the Ross Sea region ...
Meeting Document : WG-FSA-11/48 : Author(s): D.N. Webber and S.J. Parker (New Zealand)
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Poor breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season
on the island. Evidence from analyses of foraging location, foraging trip duration and diet led ... ). This season male penguins carried out fewer local trips, and both sexes spent longer at sea than in "good ... . Evidence from analyses of foraging location, foraging trip duration and diet led to the conclusion ... penguins carried out fewer local trips, and both sexes spent longer at sea than in "good" years. Meal ...
Meeting Document : WG-EMM-99/25 : Author(s): L. Irvine, J.R. Clarke and K.R. Kerry (Australia)
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The effect of different methodologies used in penguin diet studies at three US AMLR predator research sites: Admiralty Bay, Palmer Station and Cape Shirreff
, are hypothesized to influence variability in related parameters such as breeding success, foraging trip durations ... to influence variability in related parameters such as breeding success, foraging trip durations and chick ...
Meeting Document : WG-EMM-99/46 : Author(s): W. Trivelpiece, S. Trivelpiece (USA) and K. Salwicka (Poland)
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Icefish fisheries
88 1970 0 5 0 1971 10701 17958 0 1972 551 23891 0 1973 1830 4 0 1974 254 8341 0 1975 746 10694 0 1976 ...
Page : Site Section: Fisheries
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Milk consumption and growth efficiency in Antarctic fur seal (Arctocephalus gazella) pups
related to the duration of the maternal foraging trip and attendance cycle, and both per-bout and per-day ... related to the duration of the maternal foraging trip and attendance cycle, and both per-bout and per-day ...
Meeting Document : WG-EMM-97/11 : Author(s): Socha, D.G., Arnould, J.P.Y., Boyd, I.L.
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Seabird by-catch by tuna longline fisheries off southern Africa, 1998–2000
for the continental South African Exclusive Economic Zone (EEZ). Fishery observers accompanied 13 fishing trips ... (1% effort observed) had a higher bycatch rate (2.6 birds per 1 000 hooks, range per trip 0.1–5.4) than South ... South African Exclusive Economic Zone (EEZ). Fishery observers accompanied 13 fishing trips and observed ... observed) had a higher bycatch rate (2.6 birds per 1 000 hooks, range per trip 0.1–5.4) than South African ...
Meeting Document : WG-FSA-01/28 : Author(s): P.G. Ryan, D.G. Keith and M. Kroese (South Africa)
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Statistical power to detect changes in growth rates of Antarctic fur seal pups
changes (between years) in pup growth rates, the loss of power associated with obtaining weight samples ... years) in pup growth rates, the loss of power associated with obtaining weight samples on only three ... ) in pup growth rates, the loss of power associated with obtaining weight samples on only three dates ... in pup growth rates, the loss of power associated with obtaining only three weight samples, and possible ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 399–409 : Author(s): Boveng, P., J.L. Bengtson and M.E. Goebel
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Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica
that brooding fish did not occur in the sampling area/depth or that egg bundles were dis- lodged prior ... for collecting the icefish specimens. Peter McMillan (NIWA) assisted with specimen identification, and Di ... to loss or damage of the caudal fin. A linear regression model relating standard to total length ... to the data using logistic probit mod- els (Pearson and Hartley, 1962). These models were fitted using ... , meristics, reproductive biology, diet and age estimation. All of the icefish sampled were identified as ... between December and February, but this was limited, probably due to the short temporal distribution of ... the data. Length-at-maturity and age-at-maturity ogives indicated that 50% of the fish sampled were ... mature at about 340–360 mm total length (TL) and about 3–4 years of age, and that 95% were mature at ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 139–165 : Author(s): Sutton, C.P., M.J. Manning, D.W. Stevens and P.M. Marriott
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region
is the age at which 99% of a cohort had died and it had been exposed to natural mortality only: M1 ... season indicating a missing of a middle aged class (see below). 3.2 Biomass Krill biomass was mapped ... . PETERS, H. 1955. Uber das Vorkommen des Walkrebschens Euphausia superba Dana und seine Bedeutung fur die ... 21.0 15.43 Size of Survey Area (n miles2) 14300 97200 78940 88230 93800 Size ofKrill Area (%) 64 35 ... Paper Title: Estimation of krill (Euphausia superba) mortality and production rate in the ... data of an identical survey with RV Polarstern in 1987/88. Seasonal variation between summer and winter ... abundance/biomass data exceeded a factor of 1:35, while inter-annual variability between available surveys ... reached only a factor of 1:1.6. Krill mortality was calculated by linearized catch curve analysis and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Author(s): Siegel, V.
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Foraging response of Antarctic fur seals to changes in the marine environment
recorders measured the diving behaviour of 72 individuals during a total of 385 foraging trips totalling ... contained in scats. In 1996, a year of high krill abundance, females made shorter foraging trips, fewer ... and squid in the diet. Foraging trip duration, ashore duration and dive frequency increased through ... measured the diving behaviour of 72 individuals during a total of 385 foraging trips totalling 1964 ...
Meeting Document : WG-EMM-99/35 : Author(s): D.J. McCafferty, I.L. Boyd, T.R. Walker and R.I. Taylor (United Kingdom)