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Author |
Groscolas R, Viera V, Guerin N, Handrich Y, Côté S D, |
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Title |
Heart rate as a predictor of energy expenditure in undisturbed fasting and incubating penguins.
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Journal Article |
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Year |
2010 |
Publication |
The Journal of experimental biology |
Abbreviated Journal |
J. Exp. Biol. |
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Volume |
213 |
Issue |
1 |
Pages |
153 -60 |
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Keywords |
Animals, Energy Metabolism, Fasting, Fasting: physiology, Female, Heart Rate, Male, Nesting Behavior, Nesting Behavior: physiology, Spheniscidae, Spheniscidae: physiology, |
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Abstract |
Heart rate (f(H)) measurement offers the possibility to monitor energy expenditure (EE) in wild animals if the EE/f(H) relationship for the species, physiological stages and activities of interest is known. This relationship has been extensively studied using oxygen consumption rate ( ) measurement in captive, repeatedly handled king penguins (Aptenodytes patagonicus). Unfortunately, the potential effects of stress on the observed relationships resulting from handling and confinement were not considered. This study is the first involving undisturbed animals, and determines the EE/f(H) relationship in naturally fasting and freely incubating or captivity-acclimatized male and female king penguins. EE determination was based on (1) the measurement of body mass loss during periods of phase II fasting, and (2) the calculation of its energy equivalent from changes in body composition, i.e. 23.9 kJ g(-1). f(H) levels in freely incubating and captivity-acclimatized birds were found to be 50-70% lower than those previously reported for resting king penguins during measurements. Significant EE/f(H) relationships were found in freely incubating and captive males and females (R(2)=0.59 to 0.84), with no difference observed between genders. The best overall relationship was obtained by including fasting duration (t, days) in the model: EE=818+43.7xf(H)+36.3t-1.4txf(H) (R(2)=0.91). This equation yielded EE estimates approximately 26% higher than the previously reported 'best' predictive equation in king penguins, and even more so when f(H) was low. This result suggests that stress induces a disproportionate increase of f(H) vs O(2) consumption, and that the use of EE/f(H) relationships obtained in stressed birds could lead to underestimated EE values.
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119;394 |
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Bachelor's thesis |
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0022-0949 |
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71 |
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Author |
Thil M.A. & Groscolas R. |
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Title |
The use of Zoletil® to immobilize king penguins in the field. |
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Conference - International - Article without Reading Comitee |
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Year |
2000 |
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European Association of Zoo and Wildlife Veterinarians |
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European Association of Zoo and Wildlife Veterinarians, third scientific meeting |
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119 |
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yes |
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72 |
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Author |
Jean-Claude Roy, Alain Blieck, Daniel
Goujet, Philippe Janvier, Vincent Pernègre, Gaël Clément, Vincent Dupret, Denise Pons, Jean Chorowicz, André
Nel
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Title |
The ORS Vertebrates of Spitsbergen (Svalbard ) |
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Conference - International - Communication |
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2010 |
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congress STRATI 2010 Paris(30viii-02ix) – session 2 |
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1005 |
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yes |
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73 |
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Author |
Froget G., Butler P.J., Handrich Y. & Woakes A.J. |
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Title |
Heart rate as an indicator of oxygen consumption: influence of body condition in the king penguin. |
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Journal Article |
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Year |
2001 |
Publication |
Journal of experimental biology |
Abbreviated Journal |
J. Exp. Biol. |
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Volume |
204 |
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2133-2144 |
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137;394 |
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0022-0949 |
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yes |
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74 |
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Author |
Van der Putten Nathalie, Verbruggen Cyriel, Ochyra Ryszard, Verleyen Elie, Frenot Yves, |
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Title |
Subantarctic flowering plants: pre-glacial survivors or post-glacial immigrants?
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Journal Article |
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Year |
2010 |
Publication |
Journal of Biogeography |
Abbreviated Journal |
J. Biogeogr. |
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Volume |
37 |
Issue |
3 |
Pages |
582 -592 |
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Keywords |
Endemism, glacial refugia, LGM ice cover, palaeobotany, phanerogamic flora, post-glacial immigration, pre-LGM survivors, regionalism, subantarctic islands, |
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Abstract Aim The aim here was to assess whether the present-day assemblage of subantarctic flowering plants is the result of a rapid post-Last Glacial Maximum (LGM) colonization or whether subantarctic flowering plants survived on the islands in glacial refugia throughout the LGM. Location The circumpolar subantarctic region, comprising six remote islands and island groups between latitudes 46° and 55° S, including South Georgia in the South Atlantic Ocean, the Prince Edward Islands, Îles Crozet, Îles Kerguelen, the Heard Island group in the South Indian Ocean and Macquarie Island in the South Pacific Ocean. Methods Floristic affinities between the subantarctic islands were assessed by cluster analysis applied to an up-to-date dataset of the phanerogamic flora in order to test for the existence of provincialism within the subantarctic. A review of the primary literature on the palaeobotany, geology and glacial history of the subantarctic islands was carried out and supplemented with additional palaeobotanical data and new field observations from South Georgia, Île de la Possession (Îles Crozet) and Îles Kerguelen. Results First, a strong regionalism was observed, with different floras characterizing the islands in each of the ocean basins, and endemic species being present in the South Indian Ocean and South Pacific Ocean provinces. Second, the majority of the plant species were present at the onset of accumulation of post-glacial organic sediment and there is no evidence for the natural arrival of new immigrants during the subsequent period. Third, a review of geomorphological data suggested that the ice cover was incomplete during the LGM on the majority of the islands, and ice-free biological refugia were probably present even on the most glaciated islands. Main conclusions Several independent lines of evidence favour the survival of a native subantarctic phanerogamic flora in local refugia during the LGM rather than a post-LGM colonization from more distant temperate landmasses in the Southern Hemisphere.
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136 |
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Blackwell Publishing Ltd |
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1365-2699 |
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yes |
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75 |
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Author |
Tremblay Y. |
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Title |
Stratégie de recherche alimantaire et comportement de plongée du gorfou sauteur subtropical Eudyptes chrysocome moseleyi. |
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1996 |
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Abstract |
D.E.A. Biologie du Comportement |
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109 |
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76 |
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Author |
Le Cohu R. & Van De Vijver B. |
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Title |
Le genre Diadesmis (Bacillatiophyta) dans les archipels de Crozet et de Kerguelen avec la description de cinq espèce nouvelles. |
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Journal Article |
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Year |
2002 |
Publication |
Annales de limnologie-international journal of limnology |
Abbreviated Journal |
Ann. Limnol. |
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Volume |
38 |
Issue |
2 |
Pages |
119-132 |
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136 |
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0003-4088 |
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77 |
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Author |
Bried J., Duriez O. & Juin G. |
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Title |
A first case of female-female pairing in the black-faced sheathbill chinios minor. |
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Journal Article |
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1999 |
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Emu |
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99 |
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292-295 |
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354 |
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78 |
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Author |
Vernon P., Vannier G. & Trehen P. |
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Title |
A comparative approach to the entomological diversity of polar regions. |
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1998 |
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Acta oecologica-international journal of ecology |
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19(3) |
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303-308 |
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136 |
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1146-609X |
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79 |
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Author |
Weimerskirch H. |
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The role of body condition on breeding and foraging decisions in albatrosses and petrels. |
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Conference - International - Article with Reading Comitee |
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1999 |
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1178-1189 |
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Adams, N. & Slotow, R.H.(Eds), Proceedings of 22 International Ornithological Congress, Durban, Johannesburg: Birdlife South Africa |
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109 |
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