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Fahlman, A.; Handrich, Y.; Woakes, A.J.; Bost, C.-A.; Holder, R.; Duchamp, C.; Butler, P.J. |
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Title |
Effect of fasting on the VO2-fh relationship in king penguins, Aptenodytes patagonicus |
Type |
Journal Article |
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Year |
2004 |
Publication |
American journal of physiology-regulatory integrative and comparative physiology |
Abbreviated Journal |
Am. J. Physiol. Regul. Integr. Comp. Physiol. |
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Volume |
287 |
Issue |
4 |
Pages  |
R870-877 |
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Abstract |
King penguins (Aptenodytes patagonicus) may fast for up to 30 days during their breeding period. As such extended fasting may affect the relationship between the rate of O2 consumption (O2) and heart rate (fH), five male king penguins were exercised at various speeds on repeated occasions during a fasting period of 24-31 days. In addition, O2 and fH were measured in the same animals during rest in cold air and water (4{degrees}C). O2 and fH at rest and O2 during exercise decreased with fasting. There was a significant relation between O2 and fH (r2 = 0.56) that was improved by including speed, body mass (Mb), number of days fasting (t), and a cross term between fH and t (r2 = 0.92). It was concluded that there was a significant change in the O2-fH relationship with fasting during exercise. As t is measurable in the field and was shown to be significant and, therefore, a practical covariate, a regression equation for use when birds are ashore was obtained by removing speed and Mb. When this equation was used, predicted O2 was in good agreement with the observed data, with an overall error of 3.0%. There was no change in the O2-fH relationship in penguins at rest in water. |
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131;137;394 |
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Bachelor's thesis |
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0363-6119 |
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10.1152/ajpregu.00651.2003 |
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yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5548 |
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Author |
Galley C. & Linder H.P. |
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Title |
The phylogeny of the Pentaschistis calde (Danthonioideae, Poaceae) based on chloroplast DNA, and the evolution and loss of complex characters |
Type |
Journal Article |
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Year |
2007 |
Publication |
EVOLUTION |
Abbreviated Journal |
Evolution |
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Volume |
61 |
Issue |
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Pages |
864-884 |
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Abstract |
Ce travail, qui n’est pas issu du programme 136, utilise des échantillons de Poacées collectés par M. Lebouvier lors d'une mission sur Amsterdam |
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136 |
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0014-3820 |
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yes |
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5936 |
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Author |
Santin-Janin H., Garel M., Chapuis J.-L., Pontier D. |
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Title |
Assessing the performance of NDVI as a proxy of plant biomass using non-linear models: a case study on the Kerguelen archipelago. |
Type |
Journal Article |
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Year |
2009 |
Publication |
POLAR BIOLOGY |
Abbreviated Journal |
Polar Biol. |
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Volume |
32 (6) |
Issue |
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Pages |
861-871 |
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Abstract |
Nous avons utilisé les données de végétation récoltées entre janvier 1985 et janvier 1988 sur une base mensuelle par Boussès (1991, site de Molloy, Grande Terre). A l'aide d'un modèle non linéaire généralisé (incluant une distribution négative binomiale), nous avons montré qu'il y avait une relation très forte (corrélation entre prédictions du modèle et observations de 0.89 [0.77;0.95]95%) entre la composante saisonnière du NDVI et la biomasse mesurée sur le terrain (biomasse de Acaena magellanica de Taraxacum officinnale, qui sont les deux espèces dominantes du peuplement étudié). Nous avons également montré que pour les fortes valeurs de biomasse mesurée sur le terrain, le NDVI sature, et la relation atteint la valeur asymptotique de 0.54 (± 0.05). Ces résultats suggèrent que, dans ces conditions, le NDVI est un bon indicateur de la production de biomasse végétale |
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136;279 |
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Bachelor's thesis |
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ISSN |
0722-4060 |
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yes |
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Serial |
5795 |
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Author |
Halsey, L.G. Butler, P.J., Fahlman, A., Bost, C.-A., Woakes, A.J., Handrich, Y. |
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Title |
Modelling the marine resources required to raise a king penguin chick in differing environments: an energetics approach. |
Type |
Journal Article |
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Year |
2008 |
Publication |
PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY |
Abbreviated Journal |
Physiol. Biochem. Zool. |
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Volume |
81 |
Issue |
6 |
Pages |
856-867 |
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Abstract |
Accurate estimates of penguin energetics would represent an important contribution to our understanding of the trophodynamics of the Southern Ocean ecosystem and our ability to predict effects of environmental change on these species. We used the heart rate–rate of oxygen consumption technique to estimate rate of energy expenditure in adult king penguins raising a chick, in combination with data from the literature on changes in adult mass, chick energy requirements, and prey energy density. Our model estimated a variety of energetic costs and quantities of prey consumption related to raising a king penguin chick during the austral summer. The total energy requirements of a king penguin chick at the Crozet Archipelago from hatching until reaching a mass of 8 kg 90 d later is 271 MJ, representing the consumption of 38.4 kg of myctophid fish. A successfully breeding male requires 0.78 kg d-1 of fish during the entirety of the incubation period and 1.14 kg d-1 during the subsequent 90 d of chick rearing. Assuming the same energy requirements for females, the estimated 580,000 pairs of king penguins that breed successfully at Crozet each year, together with their chicks, consume a total of around 190,000 tons of fish during the incubation and summer rearing periods combined. If, due to depletion of fish stocks, the diet of breeders and chicks during the summer becomes identical to the typical diet of adults during the austral winter, the mass of prey required by both adults and chicks combined (where the chick still reaches 8 kg after 90 d) would increase by more than 25%. |
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394 |
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ISSN |
1522-2152 |
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yes |
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Call Number |
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Serial |
5663 |
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Author |
Preiss N., Melieres M.A. & Pourchet M. |
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Title |
A compilation of data on lead-210 concentration in surface air and fluxes at the air-surface and water-sediment interfaces. |
Type |
Journal Article |
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Year |
1996 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
D22 |
Issue |
101 |
Pages |
847-862 |
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Programme |
254 |
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ISSN |
0148-0227 |
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yes |
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Serial |
1325 |
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Author |
Pisano,; E. Pisano; Mazzei,; F. Mazzei; Derome,; N. Derome; Ozouf-Costaz,; C. Ozouf-Costaz; Hureau,; J.-C. Hureau; Prisco,; G. Prisco |
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Title |
Cytogenetics of the bathydraconid fish Gymnodraco acuticeps (Perciformes, Notothenioidei) from Terra Nova Bay, Ross Sea |
Type |
Journal Article |
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Year |
2001 |
Publication |
Polar biology |
Abbreviated Journal |
Polar Biol. |
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Volume |
24 |
Issue |
11 |
Pages |
846-852 |
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Abstract |
In the framework of the I.C.E.FISH (International Collaborative Effort on Antarctic Fish Adaptive Evolution) project, during the 1998-1999 season at the Italian shore-based Terra Nova Bay Station, the broad fields of adaptation and evolution of the fish suborder Notothenioidei were tackled through the integration of many disciplines. As a representative contribution of I.C.E.FISH, a cytogenetic study of the bathydraconid fish Gymnodraco acuticeps is reported. The Bathydraconidae is a heterogeneous notothenioid taxon whose intra-family relationships are very uncertain. The conventional karyotype and the location of nuclear ribosomal genes, by means of fluorescence in situ hybridisation, contributed to species-specific characterisation and provided the basis for comparative analyses. The karyotype of G. acuticeps consists of 48 chromosomes (2 metacentric, 2 submetacentric and 44 acrocentric); major ribosomal cistrons correspond to a large region in a single chromosome pair. Mapping of the available karyotypic data on a molecular phylogenetic tree provided information on chromosomal diversification during the cladogenesis of the bathydraconids. |
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281 |
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0722-4060 |
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IPEV @ Thierry.Lemaire @ |
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5580 |
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Author |
Poulin E. & Feral J.P. |
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Title |
The fiction and the facts of antarctic incubation – population genetics and phylogeny of schizasterid echinoids. |
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1994 |
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Echinoderms through time |
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837-843 |
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Abstract |
, Proc. 8th IEC, Dijon, France |
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195 |
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2036 |
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Author |
Guinet C., Barrett Lennard L.G. & Loyer B. |
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Title |
Co-ordinated attack behavior and prey sharing by killer whales at Crozet Archipelago: strategies for feeding on negatively-buoyant prey. |
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Journal Article |
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Year |
2000 |
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Marine mammal science |
Abbreviated Journal |
Mar. Mamm. Sci. |
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Volume |
16 |
Issue |
4 |
Pages |
829-834 |
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109 |
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0824-0469 |
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1327 |
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Cherel Y., Hobson K.A., Guinet C. & Vanpé C. |
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Stable isotopes document seasonal changes in trophic niches and winter foraging individual specialization in diving predators from the Southern Ocean. |
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Journal Article |
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2007 |
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Journal of animal ecology |
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76 |
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826-836 |
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109 |
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0021-8790 |
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4595 |
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Author |
Shaffer S.A., Costa P.D. & Weimerskirch H. |
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Title |
Comparison of methods for evaluating energy expenditure of incubating wandering albatrosses. |
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Journal Article |
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Year |
2001 |
Publication |
Physiological and biochemical zoology |
Abbreviated Journal |
Physiol. Biochem. Zool. |
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74 |
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6 |
Pages |
823-831 |
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109 |
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1522-2152 |
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1468 |
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