Search results
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Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using the Japanese fishery data
range of trawling depth was narrower during spring and early autumn, but greater during middle autumn ... range of trawling depth was narrower during spring and early autumn, but greater during middle autumn ...
Meeting Document : WG-EMM-04/44 : Author(s): K. Taki, T. Hayashi and M. Naganobu (Japan)
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Foraging and provisioning in Antarctic fur seals: interannual variability in time-energy budgets
seals have episodic bouts of suckling 0-3 days), alternating with foraging trips (3-10 days). Foraging ... episodic bouts of suckling 0-3 days) , alternating with foraging trips (3-10 days). Foraging time budgets ... varied significantly (P < .001) among 8 consecutive years at Bird Island, South Georgia. Foraging trip ... years than foraging trip duration but declined during a year of particularly low food availability ...
Meeting Document : WG-EMM-99/32 : Author(s): I.L. Boyd (United Kingdom)
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The effects of CEMP monitoring procedures on Adelie penguin colonies
the incubation period or for several consecutive trips during chick rearing resulted in increased foraging trip ... durations and reduced breeding success. Attachment for a single foraging trip post-hatching caused ... no significant increase in foraging trip durations nor any detectable effect on water turnover rates ... consecutive trips during chick rearing resulted in increased foraging trip durations and reduced breeding ...
Meeting Document : WG-CEMP-93/19 : Author(s): J. Clarke, K. Kerry (Australia)
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Progress towards a trophic model of the ecosystem of the Ross Sea, Antarctica, for investigating effects of the Antarctic toothfish fishery
absence of krill, Antarctic silverfish (Pleuragramma antarctica) are probably the major middle-trophic ... of krill, Antarctic silverfish (Pleuragramma antarctica) are probably the major middle-trophic level link ...
Meeting Document : WG-EMM-06/14 : Author(s): M. Pinkerton, S. Hanchet and J. Bradford-Grieve (New Zealand)
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Longline sink rates on a bottom autoline vessel in New Zealand: draft
Depth Recorders was also developed and is documented. The study found the middle of an unweighted ... Depth Recorders was also developed and is documented. The study found the middle of an unweighted ...
Meeting Document : WG-FSA-98/51 : Author(s): N.W. McL. Smith (New Zealand)
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Development of foraging behaviour and evidence of extended parental care in the gentoo penguin (Pygoscelis papua)
of gentoo penguin chicks during their “fledging period”; defined as the time between a chick’s first trip ... their first trip to sea at a mean age of 70 days of age, before finally departing the colony at an average age ... of 82 days. During this fledging period, individual chicks made an average of five trips to sea. Trip ... duration increased significantly with chick age as trips to sea becoming more similar to adult foraging ...
Meeting Document : WG-EMM-06/8 : Author(s): M. Polito and W.Z. Trivelpiece (USA)
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Estimates of the tag loss rates for single and double tagged toothfish (Dissostichus mawsoni) fishery in the Ross Sea
Abstract: The rate at which tags are lost from tagged toothfish is an important parameter ... tags are lost from tagged toothfish in Subareas 88.1 and 88.2 from a sample of 969 double tagged ... tags were lost almost immediately, and then there was an ongoing rate of about 0.039 (95% C.I.s 0.027 ... The rate at which tags are lost from tagged toothfish is an important parameter in modelling ...
Meeting Document : WG-SAM-11/18 : Author(s): A. Dunn, M.H. Smith (New Zealand), D.J. Agnew (UK) and S. Mormede (New Zealand)
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Preliminary data on the foraging habitat use by gentoo penguin in Byers Peninsula (Livingston Island) and chinstrap penguin in Deception Island, South Shetlands
Abstract: Data of basic parameters of foraging behaviour (foraging trip duration, total foraging ... trip distance, and maximum distance from the colony) and of foraging range for Gentoo penguin ... Data of basic parameters of foraging behaviour (foraging trip duration, total foraging trip ...
Meeting Document : WG-EMM-18/40 : Author(s): A. Barbosa, J. Benzal, J. Belliure and J. Masello
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Foraging strategies of chinstrap penguins at Signy Island, Antarctica: importance of benthic feeding on Antarctic krill
trip patterns and diving behaviour of chinstrap penguins breeding at Signy Island, Antarctica, using ... time-depth recorders. Foraging trips of penguins could be divided into 2 groups, short diurnal (7.8 ... h) and longer overnight (19.9 h) trips, with diurnal trips (74%) being dominant in number (263 out of 355 trips ... trips than overnight trips. Analysis of stomach contents showed that penguins on both types of trip fed ...
Meeting Document : WG-EMM-03/37 : Author(s): A. Takahashi (Japan), M.J. Dunn, P.N. Trathan (United Kingdom), K. Sato, Y. Naito (Japan), J.P. Croxall (United Kingdom)
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Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at South Shetland Islands
lost during lactation. Neither the mass nor the energy lost during lactation were related to those ... an average of 55% of the mass, including 46% of the fat, 71% of the protein and 47% of the energy lost during ... lactation. Neither the mass nor the energy lost during lactation were related to those gained while at sea ...
Meeting Document : WG-EMM-04/33 : Author(s): A.R. Carlini, G.A. Daneri, M.E.I. Márquez (Argentina), H. Bornemann (Germany), H. Panarello, R. Casaux (Argentina), S. Ramdohr and J. Plötz (Germany)