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Author |
Fionnuala R. McCully, Henri Weimerskirch, Stephen J. Cornell, Ben J. Hatchwell, Milena Cairo, Samantha C. Patrick |
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Title |
Partner intrinsic characteristics influence foraging trip duration, but not coordination of care in wandering albatrosses Diomedea exulans |
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Journal |
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Year |
2022 |
Publication |
Ecology and Evolution |
Abbreviated Journal |
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Volume |
12 |
Issue |
12 |
Pages |
e9621 |
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Keywords |
albatrosses behavioral coordination foraging bout nest attendance parental care personality seabirds |
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Abstract |
Long-lived monogamous species gain long-term fitness benefits by equalizing effort during biparental care. For example, many seabird species coordinate care by matching foraging trip durations within pairs. Age affects coordination in some seabird species; however, the impact of other intrinsic traits, including personality, on potential intraspecific variation in coordination strength is less well understood. The impacts of pair members' intrinsic traits on trip duration and coordination strength were investigated using data from saltwater immersion loggers deployed on 71 pairs of wandering albatrosses Diomedea exulans. These were modeled against pair members' age, boldness, and their partner's previous trip duration. At the population level, the birds exhibited some coordination of parental care that was of equal strength during incubation and chick-brooding. However, there was low variation in coordination between pairs and coordination strength was unaffected by the birds' boldness or age in either breeding stage. Surprisingly, during incubation, foraging trip duration was mainly driven by partner traits, as birds which were paired to older and bolder partners took shorter trips. During chick-brooding, shorter foraging trips were associated with greater boldness in focal birds and their partners, but age had no effect. These results suggest that an individual's assessment of their partner's capacity or willingness to provide care may be a major driver of trip duration, thereby highlighting the importance of accounting for pair behavior when studying parental care strategies. |
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109 |
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2045-7758 |
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yes |
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Serial |
8582 |
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Author |
MacIntosh Andrew J J, Pelletier Laure, Chiaradia Andre, Kato Akiko, Ropert-Coudert Yan, |
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Title |
Temporal fractals in seabird foraging behaviour: diving through the scales of time
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Journal Article |
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Year |
2013 |
Publication |
Scientific Reports |
Abbreviated Journal |
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Volume |
3 |
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Pages |
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Keywords |
Behavioural ecology, Scale invariance, Statistical physics, Theoretical ecology, |
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Programme |
1091 |
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Bachelor's thesis |
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ISSN |
2045-2322 |
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yes |
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Serial |
4326 |
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Author |
Della Penna Alice, De Monte Silvia, Kestenare Elodie, Guinet Christophe, d'Ovidio Francesco, |
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Title |
Quasi-planktonic behavior of foraging top marine predators.
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Journal Article |
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Year |
2015 |
Publication |
Scientific reports |
Abbreviated Journal |
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Volume |
5 |
Issue |
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Pages |
18063-18063 |
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Abstract |
Monitoring marine top predators is fundamental for assessing the health and functioning of open ocean ecosystems. Although recently tracking observations have substantially increased, factors determining the horizontal exploration of the ocean by marine predators are still largely unknown, especially at the scale of behavioral switches (1-100 km, days-weeks). It is commonly assumed that the influence of water movement can be neglected for animals capable of swimming faster than the current. Here, we challenge this assumption by combining the use of biologging (GPS and accelerometry), satellite altimetry and in-situ oceanographic data (ADCP and drifting buoys) to investigate the effect of the mesoscale ocean dynamics on a marine predator, the southern elephant seal. A Lagrangian approach reveals that trajectories of elephant seals are characterized by quasi-planktonic bouts where the animals are horizontally drifting. These bouts correspond to periods of increased foraging effort, indicating that in the quasi-planktonic conditions energy is allocated to diving and chasing, rather than in horizontal search of favourable grounds. These results suggest that mesoscale features like eddies and fronts may act as a focal points for trophic interactions not only by bottom-up modulation of nutrient injection, but also by directly entraining horizontal displacements of the upper trophic levels. |
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109 |
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Nature Publishing Group |
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ISSN |
2045-2322 |
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yes |
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Call Number |
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Serial |
6191 |
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Author |
De Grissac Sophie, Börger Luca, Guitteaud Audrey, Weimerskirch Henri |
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Title |
Contrasting movement strategies among juvenile albatrosses and petrels |
Type |
Journal Article |
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Year |
2016 |
Publication |
Scientific reports |
Abbreviated Journal |
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Volume |
6 |
Issue |
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Pages |
26103 |
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Keywords |
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Abstract |
Animal movement is a fundamental eco-evolutionary process yet the behaviour of juvenile animals is largely unknown for many species, especially for soaring seabirds which can range widely over the oceans at low cost. |
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109 |
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ISSN |
2045-2322 |
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yes |
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Serial |
6494 |
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Author |
V. Favier, D. Verfaillie, E. Berthier, M. Menegoz, V. Jomelli, J. E. Kay, L. Ducret, Y. Malbéteau, D. Brunstein, H. Gallée, Y.-H. Park & V. Rinterknecht |
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Title |
Atmospheric drying as the main driver of dramatic glacier wastage in the southern Indian Ocean |
Type |
Journal Article |
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Year |
2016 |
Publication |
Scientific reports |
Abbreviated Journal |
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Volume |
6 |
Issue |
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Pages |
32396 |
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Abstract |
The ongoing retreat of glaciers at southern sub-polar latitudes is particularly rapid and widespread. Akin to northern sub-polar latitudes, this retreat is generally assumed to be linked to warming. |
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1154 |
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2045-2322 |
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yes |
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Serial |
6548 |
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Author |
Tiphaine Jeanniard-du-Dot, Andrew W. Trites, John P. Y. Arnould, John R. Speakman, Christophe Guinet |
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Title |
Flipper strokes can predict energy expenditure and locomotion costs in free-ranging northern and Antarctic fur seals |
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Journal |
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Year |
2016 |
Publication |
Scientific reports |
Abbreviated Journal |
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Volume |
6 |
Issue |
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Pages |
33912 |
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109 |
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ISSN |
2045-2322 |
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2045-2322 |
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yes |
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Serial |
6604 |
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Title |
Early-life sexual segregation: ontogeny of isotopic niche differentiation in the Antarctic fur seal |
Type |
Journal |
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Year |
2016 |
Publication |
Scientific reports |
Abbreviated Journal |
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Volume |
6 |
Issue |
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Pages |
33211 |
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Abstract |
Investigating the ontogeny of niche differentiation enables to determine at which life-stages sexual segregation arises, providing insights into the main factors driving resource partitioning. We investigated the ontogeny of foraging ecology in Antarctic fur seals (Arctocephalus gazella), a highly dimorphic species with contrasting breeding strategies between sexes. Sequential ?13C and ?15N values of whiskers provided a longitudinal proxy of the foraging niche throughout the whole life of seals, from weaning, when size dimorphism is minimal to the age of 5. Females exhibited an early-life ontogenetic shift, from a total segregation during their first year at-sea, to a similar isotopic niche as breeding females as early as age 2. In contrast, males showed a progressive change in isotopic niche throughout their development such that 5-year-old males did not share the same niche as territorial bulls. Interestingly, males and females segregated straight after weaning with males appearing to feed in more southerly habitats than females. This spatial segregation was of similar amplitude as observed in breeding adults and was maintained throughout development. Such early-life niche differentiation is an unusual pattern and indicates size dimorphism and breeding constraints do not directly drive sexual segregation contrary to what has been assumed in otariid seals. |
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109 |
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2045-2322 |
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2045-2322 |
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yes |
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6606 |
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Title |
Variability in sea ice cover and climate elicit sex specific responses in an Antarctic predator |
Type |
Journal |
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Year |
2017 |
Publication |
Scientific Reports |
Abbreviated Journal |
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Volume |
7 |
Issue |
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Pages |
43236 |
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Abstract |
Contrasting regional changes in Southern Ocean sea ice have occurred over the last 30 years with distinct regional effects on ecosystem structure and function. Quantifying how Antarctic predators respond to such changes provides the context for predicting how climate variability/change will affect these assemblages into the future. Over an 11-year time-series, we examine how inter-annual variability in sea ice concentration and advance affect the foraging behaviour of a top Antarctic predator, the southern elephant seal. Females foraged longer in pack ice in years with greatest sea ice concentration and earliest sea ice advance, while males foraged longer in polynyas in years of lowest sea ice concentration. There was a positive relationship between near-surface meridional wind anomalies and female foraging effort, but not for males. This study reveals the complexities of foraging responses to climate forcing by a poleward migratory predator through varying sea ice property and dynamic anomalies. |
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109 |
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2045-2322 |
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2045-2322 |
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yes |
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6644 |
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Title |
Atmospheric drying as the main driver of dramatic glacier wastage in the southern Indian Ocean |
Type |
Journal |
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Year |
2016 |
Publication |
Scientific Reports |
Abbreviated Journal |
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Volume |
6 |
Issue |
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Pages |
32396 |
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Programme |
688,1048,1154 |
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Bachelor's thesis |
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2045-2322 |
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2045-2322 |
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yes |
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6743 |
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Title |
Coastal polynyas: Winter oases for subadult southern elephant seals in East Antarctica |
Type |
Journal |
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Year |
2018 |
Publication |
Scientific Reports |
Abbreviated Journal |
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Volume |
8 |
Issue |
1 |
Pages |
3183 |
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109 |
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2045-2322 |
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2045-2322 |
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yes |
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7124 |
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