| Records |
| Author |
Merkling Thomas, Agdere Lena, Albert Elise, Durieux Romain, Hatch Scott A, Danchin Etienne, Blanchard Pierrick, |
| Title |
Is natural hatching asynchrony optimal? An experimental investigation of sibling competition patterns in a facultatively siblicidal seabird
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Type |
Journal Article |
| Year |
2013 |
Publication |
Behavioral Ecology and Sociobiology |
Abbreviated Journal |
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| Volume |
68 |
Issue |
2 |
Pages |
309-319 |
| Keywords |
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| Abstract |
In unpredictable environments, any tactic that enables avian parents to adjust brood size and, thus, energy expenditure to environmental conditions should be favoured. Hatching asynchrony (HA), which occurs whenever incubation commences before clutch completion, may comprise such a tactic. For instance, the sibling rivalry hypothesis states that the hierarchy among chicks, concomitant to HA, should both facilitate the adjustment of brood size to environmental conditions and reduce several components of sibling competition as compared to synchronous hatching, at both brood and individual levels. We thus predicted that brood aggression, begging and feeding rates should decrease and that older chick superiority should increase with HA increasing, leading to higher growth and survival rates. Accordingly, we investigated the effects of an experimental upward and downward manipulation of HA magnitude on behaviour, growth and survival of black-legged kittiwake (Rissa tridactyla) chicks. In line with the sibling rivalry hypothesis, synchronous hatching increased aggression and tended to increase feeding rates by parents at the brood level. Begging rates, however, increased with HA contrary to our expectations. At the individual level, as HA magnitude increased, the younger chick was attacked and begged proportionally more often, experienced a slower growth and a higher mortality than its sibling. Overall, the occurrence of energetic costs triggered by synchronous hatching both for parents and chicks, together with the lower growth rate and increased mortality of the younger chick in highly asynchronous broods suggest that natural HA magnitude may be optimal. |
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1162 |
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0340-5443 |
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Approved |
yes |
| Call Number |
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Serial |
5991 |
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| Author |
Leclaire Sarah, van Dongen Wouter F D, Voccia Steeve, Merkling Thomas, Ducamp Christine, Hatch Scott A, Blanchard Pierrick, Danchin Etienne, Wagner Richard H, |
| Title |
Preen secretions encode information on MHC similarity in certain sex-dyads in a monogamous seabird.
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Type |
Journal Article |
| Year |
2014 |
Publication |
Scientific reports |
Abbreviated Journal |
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| Volume |
4 |
Issue |
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Pages |
6920-6920 |
| Keywords |
Alleles, Amino Acid Sequence, Animals, Avian Proteins, Avian Proteins: chemistry, Avian Proteins: genetics, Charadriiformes, Charadriiformes: physiology, Female, Genetic Variation, Grooming, Histocompatibility Antigens, Histocompatibility Antigens: chemistry, Histocompatibility Antigens: genetics, Male, Mating Preference, Animal, Molecular Sequence Data, Odors, Scent Glands, Scent Glands: secretion, |
| Abstract |
Animals are known to select mates to maximize the genetic diversity of their offspring in order to achieve immunity against a broader range of pathogens. Although several bird species preferentially mate with partners that are dissimilar at the major histocompatibility complex (MHC), it remains unknown whether they can use olfactory cues to assess MHC similarity with potential partners. Here we combined gas chromatography data with genetic similarity indices based on MHC to test whether similarity in preen secretion chemicals correlated with MHC relatedness in the black-legged kittiwake (Rissa tridactyla), a species that preferentially mates with genetically dissimilar partners. We found that similarity in preen secretion chemicals was positively correlated with MHC relatedness in male-male and male-female dyads. This study provides the first evidence that preen secretion chemicals can encode information on MHC relatedness and suggests that odor-based mechanisms of MHC-related mate choice may occur in birds.
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1162 |
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Nature Publishing Group |
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yes |
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Serial |
5988 |
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| Author |
Pak Gyundo, Park Young-Hyang, Vivier Frederic, Kwon Young-Oh, Chang Kyung-Il, |
| Title |
Regime-Dependent Nonstationary Relationship between the East Asian Winter Monsoon and North Pacific Oscillation
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Type |
Journal Article |
| Year |
2014 |
Publication |
Journal of Climate |
Abbreviated Journal |
0894-8755 |
| Volume |
27 |
Issue |
21 |
Pages |
8185-8204 |
| Keywords |
Climate variability, Interannual variability, Interdecadal variability, North Pacific Oscillation, |
| Abstract |
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1061 |
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0894-8755 |
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yes |
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5987 |
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2014 |
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1013 |
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Approved |
yes |
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Serial |
5986 |
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| Author |
Palerme, C., J. Kay, C. Genthon, T. L'Ecuyer, N. Wood, C. Claud |
| Title |
The first (model independent) climatology of antarctic precipitation |
Type |
Conference - International - Communication |
| Year |
2014 |
Publication |
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Workshop on novel mission concepts for snow and cryosphere research, ESA/ESTAEC, Hollande, 16-17 sept 2014 |
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1013 |
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yes |
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Serial |
5985 |
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| Author |
Palerme, C., A. Berne, C. Genthon, C. Amory, H. bellot, L. Piard, M. del Guasta |
| Title |
Surface-based observation of antarctic precipitation for satellite calm-val |
Type |
Conference - International - Communication |
| Year |
2014 |
Publication |
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Workshop on novel mission concepts for snow and cryosphere research, ESA/ESTAEC, Hollande, 16-17 sept 2014 |
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1013 |
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yes |
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5984 |
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| Author |
MECKENHEIM Elodie |
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Type |
Report |
| Year |
2014 |
Publication |
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Issue |
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Pages |
36 pp + annexes |
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| Programme |
1142 |
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Thesis |
Bachelor's thesis |
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yes |
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Serial |
5980 |
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| Author |
Gautier, E., Savarino, J., Farquhar, J., and Erbland, J.:
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| Title |
A reconstruction of terrestrial volcanism over the last 2500 years using sulfur isotopes in ice-cores, The 7th International Symposium on Isotopomers, Tokyo, Japan |
Type |
Conference - International - Article with Reading Comitee |
| Year |
2014 |
Publication |
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1011 |
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yes |
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5979 |
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Magand, O., Le Meur, E., Chappellaz, J., Savarino, J., and Favier, V.:
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A new scientific traverse in an unexplored area of East Antarctica SCAR Open Science Conference, Auckland, NZ |
Type |
Conference - International - Article with Reading Comitee |
| Year |
2014 |
Publication |
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1011 |
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yes |
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5976 |
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Savarino, J., Berhanu, T. A., Meusinger, C., Johnson, M., Erbland, J., Jost, R., and Bhattacharya, S. K.:
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Nitrate photolysis of Antarctic snow: Isotopic effects and wavelength dependence, The 7th International Symposium on Isotopomers, Tokyo, Japan |
Type |
Conference - International - Article with Reading Comitee |
| Year |
2014 |
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1011 |
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yes |
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5975 |
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