| Records |
| Author |
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| Title |
Commercial fishing patterns influence odontocete whale-longline interactions in the Southern Ocean |
Type |
Journal |
| Year |
2019 |
Publication |
Scientific Reports |
Abbreviated Journal |
|
| Volume |
9 |
Issue |
1 |
Pages |
1-11 |
| Keywords |
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| Abstract |
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| Programme |
109 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
|
| ISSN |
2045-2322 |
ISBN  |
2045-2322 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7447 |
| Permanent link to this record |
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| Author |
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| Title |
Arctic climate change and pollution impact little auk foraging and fitness across a decade |
Type |
Journal |
| Year |
2019 |
Publication |
Scientific reports |
Abbreviated Journal |
|
| Volume |
9 |
Issue |
1 |
Pages |
1-15 |
| Keywords |
|
| Abstract |
Ongoing global changes apply drastic environmental forcing onto Arctic marine ecosystems, particularly through ocean warming, sea-ice shrinkage and enhanced pollution. To test impacts on arctic marine ecological functioning, we used a 12-year integrative study of little auks (Alle alle), the most abundant seabird in the Atlantic Arctic. We monitored the foraging ecology, reproduction, survival and body condition of breeding birds, and we tested linkages between these biological variables and a set of environmental parameters including sea-ice concentration (SIC) and mercury contamination. Little auks showed substantial plasticity in response to SIC, with deeper and longer dives but less time spent underwater and more time flying when SIC decreased. Their diet also contained less lipid-rich ice-associated prey when SIC decreased. Further, in contrast to former studies conducted at the annual scale, little auk fitness proxies were impacted by environmental changes: Adult body condition and chick growth rate were negatively linked to SIC and mercury contamination. However, no trend was found for adult survival despite high inter-annual variability. Our results suggest that potential benefits of milder climatic conditions in East Greenland may be offset by increasing pollution in the Arctic. Overall, our study stresses the importance of long-term studies integrating ecology and ecotoxicology. |
| Programme |
388 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
2045-2322 |
ISBN |
2045-2322 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7460 |
| Permanent link to this record |
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| Author |
Marina Renedo, David Amouroux, Zoyne Pedrero, Paco Bustamante, Yves Cherel |
| Title |
Identification of sources and bioaccumulation pathways of MeHg in subantarctic penguins: a stable isotopic investigation |
Type |
Journal |
| Year |
2018 |
Publication |
Scientific Reports |
Abbreviated Journal |
|
| Volume |
8 |
Issue |
1 |
Pages |
1-10 |
| Keywords |
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| Abstract |
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| Programme |
109 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
2045-2322 |
ISBN |
2045-2322 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7482 |
| Permanent link to this record |
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| Author |
F. R. Fontaine, G. Roult, B. Hejrani, L. Michon, V. Ferrazzini, G. Barruol, H. Tkal?i?, A. Di Muro, A. Peltier, D. Reymond, T. Staudacher, F. Massin |
| Title |
|
Type |
Journal |
| Year |
2019 |
Publication |
Scientific Reports |
Abbreviated Journal |
|
| Volume |
9 |
Issue |
1 |
Pages |
1-15 |
| Keywords |
|
| Abstract |
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| Programme |
133 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
2045-2322 |
ISBN |
2045-2322 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7514 |
| Permanent link to this record |
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| |
| Author |
Antoine Stier, Quentin Schull, Pierre Bize, Emilie Lefol, Mark Haussmann, Damien Roussel, Jean-Patrice Robin, Vincent A. Viblanc |
| Title |
Oxidative stress and mitochondrial responses to stress exposure suggest that king penguins are naturally equipped to resist stress |
Type |
Journal |
| Year |
2019 |
Publication |
Scientific Reports |
Abbreviated Journal |
|
| Volume |
9 |
Issue |
1 |
Pages |
1-12 |
| Keywords |
|
| Abstract |
Exposure to unpredictable environmental stressors could influence animal health and fitness by inducing oxidative stress, potentially through downstream effects of glucocorticoid stress hormones (e.g. corticosterone) on mitochondrial function. Yet, it remains unclear whether species that have evolved in stochastic and challenging environments may present adaptations to alleviate the effects of stress exposure on oxidative stress. We tested this hypothesis in wild king penguins by investigating mitochondrial and oxidative stress responses to acute restraint-stress, and their relationships with baseline (potentially mirroring exposure to chronic stress) and stress-induced increase in corticosterone levels. Acute restraint-stress did not significantly influence mitochondrial function. However, acute restraint-stress led to a significant increase in endogenous antioxidant defences, while oxidative damage levels were mostly not affected or even decreased. High baseline corticosterone levels were associated with an up-regulation of the glutathione antioxidant system and a decrease in mitochondrial efficiency. Both processes might contribute to prevent oxidative damage, potentially explaining the negative relationship observed between baseline corticosterone and plasma oxidative damage to proteins. While stress exposure can represent an oxidative challenge for animals, protective mechanisms like up-regulating antioxidant defences and decreasing mitochondrial efficiency seem to occur in king penguins, allowing them to cope with their stochastic and challenging environment. |
| Programme |
119 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
2045-2322 |
ISBN |
2045-2322 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
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Serial |
7529 |
| Permanent link to this record |
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| |
| Author |
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| Title |
Marine habitat use and feeding ecology of introduced anadromous brown trout at the colonization front of the sub-Antarctic Kerguelen archipelago |
Type |
Journal |
| Year |
2021 |
Publication |
Scientific Reports |
Abbreviated Journal |
|
| Volume |
11 |
Issue |
1 |
Pages |
11917 |
| Keywords |
Animal migration Behavioural ecology Ecology Stable isotope analysis |
| Abstract |
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| Programme |
1041 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
2045-2322 |
ISBN |
2045-2322 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
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Serial |
8180 |
| Permanent link to this record |
| |
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| |
| Author |
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| Title |
Keystone seabird may face thermoregulatory challenges in a warming Arctic |
Type |
Journal |
| Year |
2023 |
Publication |
Scientific Reports |
Abbreviated Journal |
|
| Volume |
13 |
Issue |
1 |
Pages |
16733 |
| Keywords |
Climate-change ecology Ecophysiology |
| Abstract |
Climate change affects the Arctic more than any other region, resulting in evolving weather, vanishing sea ice and altered biochemical cycling, which may increase biotic exposure to chemical pollution. We tested thermoregulatory impacts of these changes on the most abundant Arctic seabird, the little auk (Alle alle). This small diving species uses sea ice-habitats for foraging on zooplankton and resting. We equipped eight little auks with 3D accelerometers to monitor behavior, and ingested temperature recorders to measure body temperature (Tb). We also recorded weather conditions, and collected blood to assess mercury (Hg) contamination. There were nonlinear relationships between time engaged in different behaviors and Tb. Tb increased on sea ice, following declines while foraging in polar waters, but changed little when birds were resting on water. Tb also increased when birds were flying, and decreased at the colony after being elevated during flight. Weather conditions, but not Hg contamination, also affected Tb. However, given our small sample size, further research regarding thermoregulatory effects of Hg is warranted. Results suggest that little auk Tb varies with behavior and weather conditions, and that loss of sea ice due to global warming may cause thermoregulatory and energic challenges during foraging trips at sea. |
| Programme |
388 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
2045-2322 |
Medium |
|
| Area |
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Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
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Serial |
8778 |
| Permanent link to this record |
| |
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| |
| Author |
Cox Sam L., Orgeret Florian, Gesta Mathieu, Rodde Charles, Heizer Isaac, Weimerskirch Henri, Guinet Christophe, O'Hara Robert B. |
| Title |
Processing of acceleration and dive data on?board satellite relay tags to investigate diving and foraging behaviour in free?ranging marine predators |
Type |
Journal |
| Year |
2017 |
Publication |
Methods in Ecology and Evolution |
Abbreviated Journal |
|
| Volume |
9 |
Issue |
1 |
Pages |
64-77 |
| Keywords |
|
| Abstract |
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| Programme |
109 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
|
Edition |
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| ISSN |
2041-210X |
ISBN |
2041-210X |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6658 |
| Permanent link to this record |
| |
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| |
| Author |
Stier Antoine, Romestaing Caroline, Schull Quentin, Lefol Emilie, Robin Jean?Patrice, Roussel Damien, Bize Pierre, Davey Matthew |
| Title |
How to measure mitochondrial function in birds using red blood cells: a case study in the king penguin and perspectives in ecology and evolution |
Type |
Journal |
| Year |
2017 |
Publication |
Methods in Ecology and Evolution |
Abbreviated Journal |
|
| Volume |
8 |
Issue |
10 |
Pages |
1172-1182 |
| Keywords |
erythrocyte high?resolution respirometry metabolism mitochondria non?invasive methodology |
| Abstract |
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| Programme |
119,131 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
|
Series Issue |
|
Edition |
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| ISSN |
2041-210X |
ISBN |
2041-210X |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6795 |
| Permanent link to this record |
| |
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| |
| Author |
Sam L. Cox, Florian Orgeret, Mathieu Gesta, Charles Rodde, Isaac Heizer, Henri Weimerskirch, Christophe Guinet |
| Title |
Processing of acceleration and dive data on-board satellite relay tags to investigate diving and foraging behaviour in free-ranging marine predators |
Type |
Journal |
| Year |
2018 |
Publication |
Methods in Ecology and Evolution |
Abbreviated Journal |
|
| Volume |
9 |
Issue |
1 |
Pages |
64-77 |
| Keywords |
accelerometers animal biotelemetry Argos data abstraction Mirounga leonina prey catch attempts satellite data relaying southern elephant seal swimming effort |
| Abstract |
Biologging technologies are changing the way in which the marine environment is observed and monitored. However, because device retrieval is typically required to access the high-resolution data they collect, their use is generally restricted to those animals that predictably return to land. Data abstraction and transmission techniques aim to address this, although currently these are limited in scope and do not incorporate, for example, acceleration measurements which can quantify animal behaviours and movement patterns over fine-scales. In this study, we present a new method for the collection, abstraction and transmission of accelerometer data from free-ranging marine predators via the Argos satellite system. We test run the technique on 20 juvenile southern elephant seals Mirounga leonina from the Kerguelen Islands during their first months at sea following weaning. Using retrieved archival data from nine individuals that returned to the colony, we compare and validate abstracted transmissions against outputs from established accelerometer processing procedures. Abstracted transmissions included estimates, across five segments of a dive profile, of time spent in prey catch attempt (PrCA) behaviours, swimming effort and pitch. These were then summarised and compared to archival outputs across three dive phases: descent, bottom and ascent. Correlations between the two datasets were variable but generally good (dependent on dive phase, marginal R2 values of between .45 and .6 to >.9) and consistent between individuals. Transmitted estimates of PrCA behaviours and swimming effort were positively biased to those from archival processing. Data from this study represent some of the first remotely transmitted quantifications from accelerometers. The methods presented and analysed can be used to provide novel insight towards the behaviours and movements of free-ranging marine predators, such as juvenile southern elephant seals, from whom logger retrieval is challenging. Future applications could however benefit from some adaption, particularly to reduce positive bias in transmitted PrCA behaviours and swimming effort, for which this study provides useful insight. |
| Programme |
109 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
|
Summary Language |
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Original Title |
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| Series Editor |
|
Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
|
Edition |
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| ISSN |
2041-210X |
ISBN |
2041-210X |
Medium |
|
| Area |
|
Expedition |
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Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
7116 |
| Permanent link to this record |
