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Title |
Similar at-sea behaviour but different habitat use between failed and successful breeding albatrosses |
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Journal |
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Year |
2021 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
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Volume |
678 |
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Pages |
183-196 |
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Keywords |
Behavioural state Breeding failure Foraging behaviour Habitat models Inter-individual variability Procellariiformes Thalassarche carteri |
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Abstract |
Breeding failure is expected to induce behavioural changes in central place foragers. Indeed, after a failed reproductive attempt, breeding individuals are relieved from having to return to their breeding site for reproductive duties and thus are less constrained than successful breeders in their movements during the remainder of the breeding season. Accordingly, they are expected to adjust their behaviour, travelling longer in distance and/or time to reach foraging grounds. They are also expected to use different foraging areas to decrease local intra-specific competition with successful breeders. We compared the at-sea behaviour and habitat use of successful and failed Indian yellow-nosed albatrosses nesting in Amsterdam Island, Southern Indian Ocean, during 2 chick-rearing seasons. Failed breeders exhibited the same at-sea foraging behaviour, travelling as far and as long as successful breeders. They also spent the same amount of time on their nest between at-sea trips. Nevertheless, habitat models revealed partial spatial segregation of failed breeders, which used specific foraging areas characterized by deeper and colder waters in addition to the areas they shared with successful breeders. Our study shows the importance of combining a range of analytical methods (spatial analysis, behavioural inferences with advanced movement models and habitat models) to infer the at-sea behaviour and habitat use of seabirds. It also stresses the importance of considering individual breeding status when aiming to understand the spatial distribution of individuals, especially when this information may have conservation implications. |
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0171-8630, 1616-1599 |
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8436 |
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Six pelagic seabird species of the North Atlantic engage in a fly-and-forage strategy during their migratory movements |
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Year |
2021 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
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Volume |
676 |
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127-144 |
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Keywords |
Common murres Dovekies Light-level geolocation Migration strategies Non-breeding movements Thick-billed murres |
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330 |
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0171-8630, 1616-1599 |
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yes |
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8437 |
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The Marine Vegetation of the Kerguelen Islands: History of Scientific Campaigns, Inventory of the Flora and First Analysis of Its Biogeographical Affinities |
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Year |
2021 |
Publication |
Cryptogamie, Algologie |
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42 |
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12 |
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173-216 |
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1044 |
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0181-1568, 1776-0984 |
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yes |
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8440 |
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2021 |
Publication |
Ecology |
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103 |
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3 |
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e3611 |
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Keywords |
Antarctica Asteroidea benthos biometric measurements Echinodermata elemental contents invertebrates marine ecosystems sea stars Southern Ocean stable isotopes subantarctic Islands |
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1044 |
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1939-9170 |
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yes |
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8445 |
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Book |
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2021 |
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232 pages |
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388 |
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978-2-330-15652-7 |
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yes |
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8448 |
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Author |
Von Beckerath, X., Eitzinger, B., Sittler, B., Gilg, O., Yannic, G., Klein, A.-M., Benadi, G. |
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Title |
Long-term monitoring reveals topographical features and vegetation explain winter habitat use of an Arctic rodent |
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Peer-reviewed symposium |
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Year |
2021 |
Publication |
Annual meeting of the icelandic ecological society. nordic society oikos, reykjavik, iceland, 16-17 april 2021 |
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1036 |
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yes |
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8450 |
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Garcin N, Viblanc VA, Schull Q, Michaux D, Reichert S, Robin JP, Bize P, Stier A |
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Title |
Naturally equipped to resist stress |
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Peer-reviewed symposium |
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2021 |
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Society for experimental biology annual conference. poster. actes du colloque |
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Stress exposure and stress response are likely to vary according to life history strategies and environmental contexts. Although the acute release of glucocorticoids in response to unpredictable environmental conditions may lead to adaptative behavioral and physiological responses, exposure to high glucocorticoid levels on the long-term usually leads to deleterious cascading effects on animal’s physiology, behavior and fitness. Yet, some species may be more adapted to cope with challenging events than others and might naturally possess protective mechanisms limiting the adverse consequences of prolonged exposure to high glucocorticoid levels. King penguin chicks being naturally exposed to harsh weather, prolonged fasting and constant predation pressure, we investigated the life-history, behavioral and physiological consequences of an experimental increase in corticosterone levels on the medium and long-term (after removing implants), predicting to find relatively few costs associated with such treatment. Although non-significant, CORT-treated chicks were slightly larger, fledged slightly earlier and had slightly higher survival chances than placebo chicks. CORT-treated chicks were significantly more aggressive and displayed lower corticosterone response to acute stress on the medium term, while their physical activity and whole-body energetics were not significantly affected. While mitochondrial density was not significantly affected by the CORT treatment, CORT-treated chicks had lower oxidative stress levels on the long-term than placebo ones, and no significant impact was observed on telomere shortening. Finally, the expression of several genes (i.e. CORT receptor, HSP90, mTOR, NRF2 and TERF2) was up regulated in treated chicks, which could potentially mediate the apparent ‘stress’ resistance we observed at the phenotypic level. |
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yes |
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8454 |
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Seabird population changes following mammal eradication at oceanic Saint-Paul Island, Indian Ocean |
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2021 |
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Journal for Nature Conservation |
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63 |
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126049 |
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Island restoration Petrels Population growth rate Rats Shearwaters Terns |
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109 |
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1617-1381 |
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8459 |
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Author |
Samuel Veilleux, Armelle Decaulne, Najat Bhiry |
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2021 |
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Arctic Science |
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7 |
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4 |
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798-812 |
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1148 |
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8461 |
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Armelle Decaulne, Najat Bhiry, Fabienne Joliet, Laine Chanteloup, Thora Martina Herrmann, Bruno Persat, Daniel Germain, Orsane Rousset |
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Title |
TAKUJUQ: Where Art and Science meet in Nunavik |
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2021 |
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Tagralik Magazine |
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The TUKISIK (Tukisigasuaqatigit: Understanding together) is a scientific program, ongoing since 2014, concerning human-environment interactions, reinforcing links between scientists and several communities. |
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1148 |
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8471 |
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