| Records |
| Author |
Robin Cristofari, Emiliano Trucchi, Jason D. Whittington, Stéphanie Vigetta, Hélène Gachot-Neveu, Nils Christian Stenseth, Yvon Le Maho, Céline Le Bohec |
| Title |
Spatial Heterogeneity as a Genetic Mixing Mechanism in Highly Philopatric Colonial Seabirds |
Type |
Journal |
| Year |
2015 |
Publication |
PLOS ONE |
Abbreviated Journal  |
|
| Volume |
10 |
Issue |
2 |
Pages |
e0117981 |
| Keywords |
Animal sexual behavior Animal sociality Birds Inbreeding Penguins Population genetics Seabirds Spatial autocorrelation |
| Abstract |
How genetic diversity is maintained in philopatric colonial systems remains unclear, and understanding the dynamic balance of philopatry and dispersal at all spatial scales is essential to the study of the evolution of coloniality. In the King penguin, Aptenodytes patagonicus, return rates of post-fledging chicks to their natal sub-colony are remarkably high. Empirical studies have shown that adults return year after year to their previous breeding territories within a radius of a few meters. Yet, little reliable data are available on intra- and inter-colonial dispersal in this species. Here, we present the first fine-scale study of the genetic structure in a king penguin colony in the Crozet Archipelago. Samples were collected from individual chicks and analysed at 8 microsatellite loci. Precise geolocation data of hatching sites and selective pressures associated with habitat features were recorded for all sampling locations. We found that despite strong natal and breeding site fidelity, king penguins retain a high degree of panmixia and genetic diversity. Yet, genetic structure appears markedly heterogeneous across the colony, with higher-than-expected inbreeding levels, and local inbreeding and relatedness hotspots that overlap predicted higher-quality nesting locations. This points towards heterogeneous population structure at the sub-colony level, in which fine-scale environmental features drive local philopatric behaviour, while lower-quality patches may act as genetic mixing mechanisms at the colony level. These findings show how a lack of global genetic structuring can emerge from small-scale heterogeneity in ecological parameters, as opposed to the classical model of homogeneous dispersal. Our results also emphasize the importance of sampling design for estimation of population parameters in colonial seabirds, as at high spatial resolution, basic genetic features are shown to be location-dependent. Finally, this study stresses the importance of understanding intra-colonial dispersal and genetic mixing mechanisms in order to better estimate species-wide gene flows and population dynamics. |
| Programme |
137 |
| Campaign |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
1932-6203 |
ISBN |
1932-6203 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6695 |
| Permanent link to this record |
| |
|
| |
| Author |
Charlène Guillaumot, Alexis Martin, Salomé Fabri-Ruiz, Marc Eléaume, Thomas Saucède |
| Title |
Echinoids of the Kerguelen Plateau – occurrence data and environmental setting for past, present, and future species distribution modelling |
Type |
Journal |
| Year |
2016 |
Publication |
ZooKeys |
Abbreviated Journal |
|
| Volume |
630 |
Issue |
|
Pages |
1-17 |
| Keywords |
|
| Abstract |
The present dataset provides a case study for species distribution modelling (SDM) and for model testing in a poorly documented marine region. The dataset includes spatially-explicit data for echinoid (Echinodermata: Echinoidea) distribution. Echinoids were collected during oceanographic campaigns led around the Kerguelen Plateau (+63°/+81°E; -46°/-56°S) since 1872. In addition to the identification of collection specimens from historical cruises, original data from the recent campaigns POKER II (2010) and PROTEKER 2 to 4 (2013-2015) are also provided. In total, five families, ten genera, and 12 echinoid species are recorded in the region of the Kerguelen Plateau. The dataset is complemented with environmental descriptors available and relevant for echinoid ecology and SDM. The environmental data was compiled from different sources and was modified to suit the geographic extent of the Kerguelen Plateau, using scripts developed with the R language (R Core Team 2015). Spatial resolution was set at a common 0.1° pixel resolution. Mean seafloor and sea surface temperatures, salinity and their amplitudes, all derived from the World Ocean Database (Boyer et al. 2013) are made available for the six following decades: 1955–1964, 1965–1974, 1975–1984, 1985–1994, 1995–2004, 2005–2012. Future projections are provided for several parameters: they were modified from the Bio-ORACLE database (Tyberghein et al. 2012). They are based on three IPCC scenarii (B1, AIB, A2) for years 2100 and 2200 (IPCC, 4th report). |
| Programme |
1044 |
| Campaign |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
1313-2970 |
ISBN |
1313-2970 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6696 |
| Permanent link to this record |
| |
|
| |
| Author |
Maryline Le Vaillant, Vincent A. Viblanc, Claire Saraux, Céline Le Bohec, Yvon Le Maho, Akiko Kato, François Criscuolo, Yan Ropert-Coudert |
| Title |
Telomere length reflects individual quality in free-living adult king penguins |
Type |
Journal |
| Year |
2015 |
Publication |
Polar Biology |
Abbreviated Journal |
|
| Volume |
38 |
Issue |
12 |
Pages |
2059-2067 |
| Keywords |
|
| Abstract |
Growing evidence suggests that telomeres, non-coding DNA sequences that shorten with age and stress, are related in an undefined way to individual breeding performances and survival rates in several species. Short telomeres and elevated shortening rates are typically associated with life stress and low health. As such, telomeres could serve as an integrative proxy of individual quality, describing the overall biological state of an individual at a given age. Telomere length could be associated with the decline of an array of physiological traits in age-controlled individuals. Here, we investigated the links between individuals’ relative telomere length, breeding performance and various physiological (body condition, natural antibody levels) and life history (age, past breeding success) parameters in a long-lived seabird species, the king penguin Aptenodytes patagonicus. While we observed no link between relative telomere length and age, we found that birds with longer telomeres arrived earlier for breeding at the colony, and had higher breeding performances (i.e. the amount of time adults managed to maintain their chicks alive, and ultimately breeding success) than individuals with shorter telomeres. Further, we observed a positive correlation between telomere length and natural antibody levels. Taken together, our results add to the growing evidence that telomere length is likely to reflect individual quality difference in wild animal. |
| Programme |
137 |
| Campaign |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0722-4060, 1432-2056 |
ISBN |
0722-4060, 1432-2056 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6697 |
| Permanent link to this record |
| |
|
| |
| Author |
Maryline Le Vaillant, Yan Ropert-Coudert, Yvon Le Maho, Céline Le Bohec |
| Title |
Individual parameters shape foraging activity in breeding king penguins |
Type |
Journal |
| Year |
2016 |
Publication |
Behavioral Ecology |
Abbreviated Journal |
|
| Volume |
27 |
Issue |
1 |
Pages |
352-362 |
| Keywords |
|
| Abstract |
The variability in individual fitness within a population is likely to be mediated through individual foraging ability and tactics, themselves linked to age- or experience-related processes, but also to differences in individual quality. Not only age, experience, and quality but also sex-related foraging strategies should particularly play an important role in long-lived central-place foragers that have to cope with strong environmental constraints. We monitored the foraging effort (foraging trip durations and number of trips) of 262 known-age micro-tagged king penguins, Aptenodytes patagonicus, at different breeding stages during one of their breeding cycles. We investigated how their age (4–11 years old), sex, past breeding experience (the number of successful breeding attempts), and breeding quality (the expected breeding success, corresponding to the residual of the linear relationship between the age and on the number of past breeding success divided by the number of breeding attempts) affected foraging over a whole breeding season. During the incubation, younger birds (4 years old) undertook longer foraging trips compared with older ones. During the brooding phase and the second period of the crèching phase, more experienced birds performed shorter foraging trip than those with a low breeding experience, whereas, during the first period of the crèching phase, individuals with better breeding quality performed shorter foraging trips at sea than low breeding quality individuals. Sex-specific foraging patterns were also observed depending on the period of the breeding cycle. Our study shows, for the first time, how foraging effort can be driven by a complex interplay of several individual parameters according to breeding stage and resource availability and abundance. |
| Programme |
137 |
| Campaign |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
1045-2249 |
ISBN |
1045-2249 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6699 |
| Permanent link to this record |
| |
|
| |
| Author |
Claudio A. González-Wevar, Mathias Hüne, Sebastián Rosenfeld, Thomas Saucède, Jean-Pierre Féral, Andrés Mansilla, Elie Poulin |
| Title |
Patterns of genetic diversity and structure in Antarctic and sub-Antarctic Nacella (Patellogastropoda: Nacellidae) species |
Type |
Journal |
| Year |
2016 |
Publication |
Biodiversity |
Abbreviated Journal |
|
| Volume |
17 |
Issue |
1-2 |
Pages |
46-55 |
| Keywords |
Antarctic Circumpolar Current biogeography Last Glacial Maximum Nacella phylogeography Southern Ocean |
| Abstract |
The biogeography of the Southern Ocean reflects complex interactions between major macro-evolutionary forces and biotic elements. Major gateway openings, the establishment of the Antarctic Circumpolar Current and climate cooling are deeply connected to the composition, abundance and distribution of the Southern Ocean marine benthic fauna. Glacial episodes of the Quaternary heavily impacted the distribution of the genetic variation of the Southern Ocean biota. The genus Nacella includes 12 nominal species in different provinces of the Southern Ocean. In this study, we compared patterns of mitochondrial DNA diversity in three Nacella species from Antarctic Peninsula, Kerguelen Island and Patagonia. Low levels of genetic diversity and absence of genetic structure characterise each one of them showing the strong impact of ice advances and retreats over their respective demographics. Haplotype diversity, short genealogies and demographic inference recorded suggest the occurrence of a more dramatic demographic process in Antarctic Peninsula than in the sub-Antarctic. |
| Programme |
1044 |
| Campaign |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
1488-8386 |
ISBN |
1488-8386 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6700 |
| Permanent link to this record |
| |
|
| |
| Author |
Tshoanelo Miya, Ofer Gon, Monica Mwale, Elie Poulin |
| Title |
Molecular systematics and taxonomic status of three latitudinally widespread nototheniid (Perciformes: Notothenioidei) fishes from the Southern Ocean |
Type |
Journal |
| Year |
2016 |
Publication |
Zootaxa |
Abbreviated Journal |
|
| Volume |
4061 |
Issue |
4 |
Pages |
381-396 |
| Keywords |
Atlantic Ocean sector Gobionotothen Indian Ocean sector Lepidonotothen mitochondrial DNA nuclear gene Pisces sequence divergence |
| Abstract |
The taxonomic status of the three nototheniids, Lepidonotothen squamifrons, L. larseni and Gobionotothen marionensis from different localities in the Southern Ocean is re-evaluated at the DNA level. DNA sequence divergences and phylogenetic relationship were estimated using a combined mitochondrial (mtDNA, ND2 and COI) dataset and data for one nuclear gene (S7 intron 1). Phylogenies of both datasets had Lepidonotothen kempi nested within L. squamifrons lineage, with low sequence divergences (0% to 0.4%) between the two nominal species suggesting that they are populations of one species. Therefore, these results do not support the previous splitting of L. squamifrons into different species. Similarly, the L. larseni specimens also represented a single genetic unit (0.3% to 0.6%) with low geographic variation between Atlantic and Indian Ocean specimens, which does not support the splitting of this species into geographically restricted species. The mtDNA phylogeny clearly separated individuals of G. acuta from Kerguelen, Heard and MacDonald Islands from G. marionensis individuals into different clades, with sequence divergence of 2.9% between these clades supporting they are different species. |
| Programme |
1044 |
| Campaign |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
1175-5334 |
ISBN |
1175-5334 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6701 |
| Permanent link to this record |
| |
|
| |
| Author |
Claudio A. González-Wevar, Steven L. Chown, Simon Morley, Nestor Coria, Thomas Saucéde, Elie Poulin |
| Title |
Out of Antarctica: quaternary colonization of sub-Antarctic Marion Island by the limpet genus Nacella (Patellogastropoda: Nacellidae) |
Type |
Journal |
| Year |
2016 |
Publication |
Polar Biology |
Abbreviated Journal |
|
| Volume |
39 |
Issue |
1 |
Pages |
77-89 |
| Keywords |
|
| Abstract |
The distribution of the Southern Ocean nearshore marine benthic fauna is the consequence of major geologic, oceanographic, and climatic changes during the last 50 Ma. As a result, a main biogeographic principle in the Southern Ocean is the clear distinction of the Antarctic biota. The Antarctic Polar Front (APF) represents an important barrier between Antarctica and other sub-Antarctic provinces. However, the high degree of genetic affinity between populations of the Antarctic limpet Nacella concinna and its sub-Antarctic relative Nacella delesserti from Marion Island stands against this tenet. Here, we performed new phylogenetic reconstructions in Nacella with special emphasis on the relationship between N. concinna and N. delesserti. Similarly, we performed population-based analyses in N. concinna and N. delesserti to further understand the genetic legacy of the Quaternary glacial cycles. Phylogenetic reconstructions recognized N. concinna and N. delesserti as two closely but distinct monophyletic entities and therefore as valid evolutionary units. The cladogenetic process separating them occurred ~0.35 Ma and is consistent with the origin of Marion Island (~0.45 Ma). Exceptional long-distance dispersal between provinces located inside and outside the APF, rather than revealing the permeability of the Antarctic Polar Front, seems to be related to latitudinal shift in the position of the APF during coldest periods of the Quaternary. Diversity indices, neutrality tests, haplotype networks, and demographic inference analysis showed that the demography of both species exhibits a clear signal of postglacial expansion. |
| Programme |
1044 |
| Campaign |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0722-4060, 1432-2056 |
ISBN |
0722-4060, 1432-2056 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6702 |
| Permanent link to this record |
| |
|
| |
| Author |
Robin Cristofari, Giorgio Bertorelle, André Ancel, Andrea Benazzo, Yvon Le Maho, Paul J. Ponganis, Nils Chr Stenseth, Phil N. Trathan, Jason D. Whittington, Enrico Zanetti, Daniel P. Zitterbart, Céline Le Bohec, Emiliano Trucchi |
| Title |
Full circumpolar migration ensures evolutionary unity in the Emperor penguin |
Type |
Journal |
| Year |
2016 |
Publication |
Nature Communications |
Abbreviated Journal |
|
| Volume |
7 |
Issue |
|
Pages |
11842 |
| Keywords |
|
| Abstract |
Defining reliable demographic models is essential to understand the threats of ongoing environmental change. Yet, in the most remote and threatened areas, models are often based on the survey of a single population, assuming stationarity and independence in population responses. This is the case for the Emperor penguin Aptenodytes forsteri, a flagship Antarctic species that may be at high risk continent-wide before 2100. Here, using genome-wide data from the whole Antarctic continent, we reveal that this top-predator is organized as one single global population with a shared demography since the late Quaternary. We refute the view of the local population as a relevant demographic unit, and highlight that (i) robust extinction risk estimations are only possible by including dispersal rates and (ii) colony-scaled population size is rather indicative of local stochastic events, whereas the species’ response to global environmental change is likely to follow a shared evolutionary trajectory. |
| Programme |
137 |
| Campaign |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
2041-1723 |
ISBN |
2041-1723 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6703 |
| Permanent link to this record |
| |
|
| |
| Author |
Steven L. Chown, Cassandra M. Brooks, Aleks Terauds, Céline Le Bohec, Céline van Klaveren-Impagliazzo, Jason D. Whittington, Stuart H. M. Butchart, Bernard W. T. Coetzee, Ben Collen, Peter Convey, Kevin J. Gaston, Neil Gilbert, Mike Gill, Robert Höft, Sam Johnston, Mahlon C. Kennicutt Ii, Hannah J. Kriesell, Yvon Le Maho, Heather J. Lynch, Maria Palomares, Roser Puig-Marcó, Peter Stoett, Melodie A. McGeoch |
| Title |
Antarctica and the strategic plan for biodiversity |
Type |
Journal |
| Year |
2017 |
Publication |
PLOS Biology |
Abbreviated Journal |
|
| Volume |
15 |
Issue |
3 |
Pages |
e2001656 |
| Keywords |
Antarctic Ocean Antarctica Biodiversity Conservation science Invasive species Marine conservation Marine ecology Marine ecosystems |
| Abstract |
The Strategic Plan for Biodiversity, adopted under the auspices of the Convention on Biological Diversity, provides the basis for taking effective action to curb biodiversity loss across the planet by 2020—an urgent imperative. Yet, Antarctica and the Southern Ocean, which encompass 10% of the planet’s surface, are excluded from assessments of progress against the Strategic Plan. The situation is a lost opportunity for biodiversity conservation globally. We provide such an assessment. Our evidence suggests, surprisingly, that for a region so remote and apparently pristine as the Antarctic, the biodiversity outlook is similar to that for the rest of the planet. Promisingly, however, much scope for remedial action exists. |
| Programme |
137 |
| Campaign |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
1545-7885 |
ISBN |
1545-7885 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6704 |
| Permanent link to this record |
| |
|
| |
| Author |
Cornet C., Amelineau F., Babel D., Boureau M., Courtecuisse J., Cristofari R., Descamps S., Marpaux S., Morinay J., Saraux C., Whittington J.d., Le Maho Y., Le Bohec C. |
| Title |
The adaptive capacities of Adelie penguins to face environmental variability: the role of heterogeneity within populations |
Type |
Communication |
| Year |
2014 |
Publication |
|
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
|
| Abstract |
|
| Programme |
137 |
| Campaign |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6705 |
| Permanent link to this record |
