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Author |
D. Noll, F. Leon, D. Brandt, P. Pistorius, C. Le Bohec, F. Bonadonna, P. N. Trathan, A. Barbosa, A. Raya Rey, G. P. M. Dantas, R. C. K. Bowie, E. Poulin, J. A. Vianna |
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Title |
Positive selection over the mitochondrial genome and its role in the diversification of gentoo penguins in response to adaptation in isolation |
Type |
Journal |
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Year |
2022 |
Publication |
Scientific Reports |
Abbreviated Journal |
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Volume |
12 |
Issue |
1 |
Pages |
3767 |
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Keywords |
Evolution Evolutionary genetics |
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Abstract |
Although mitochondrial DNA has been widely used in phylogeography, evidence has emerged that factors such as climate, food availability, and environmental pressures that produce high levels of stress can exert a strong influence on mitochondrial genomes, to the point of promoting the persistence of certain genotypes in order to compensate for the metabolic requirements of the local environment. As recently discovered, the gentoo penguins (Pygoscelis papua) comprise four highly divergent lineages across their distribution spanning the Antarctic and sub-Antarctic regions. Gentoo penguins therefore represent a suitable animal model to study adaptive processes across divergent environments. Based on 62 mitogenomes that we obtained from nine locations spanning all four gentoo penguin lineages, we demonstrated lineage-specific nucleotide substitutions for various genes, but only lineage-specific amino acid replacements for the ND1 and ND5 protein-coding genes. Purifying selection (dN/dS??1) was mostly present in codons of the Complex I (NADH genes), supported by two different codon-based methods at the ND1 and ND4 in the most divergent lineages, the eastern gentoo penguin from Crozet and Marion Islands and the southern gentoo penguin from Antarctica respectively. Additionally, ND5 and ATP6 were under selection in the branches of the phylogeny involving all gentoo penguins except the eastern lineage. Our study suggests that local adaptation of gentoo penguins has emerged as a response to environmental variability promoting the fixation of mitochondrial haplotypes in a non-random manner. Mitogenome adaptation is thus likely to have been associated with gentoo penguin diversification across the Southern Ocean and to have promoted their survival in extreme environments such as Antarctica. Such selective processes on the mitochondrial genome may also be responsible for the discordance detected between nuclear- and mitochondrial-based phylogenies of gentoo penguin lineages. |
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Programme |
137,354 |
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Thesis |
Bachelor's thesis |
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Edition |
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ISSN |
2045-2322 |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
8457 |
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Author |
Clive R. McMahon, Mark A. Hindell, Jean-Benoit Charrassin, Stuart Corney, Christophe Guinet, Robert Harcourt, Ian Jonsen, Rowan Trebilco, Guy Williams, Sophie Bestley |
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Title |
Finding mesopelagic prey in a changing Southern Ocean |
Type |
Journal |
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Year |
2019 |
Publication |
Scientific Reports |
Abbreviated Journal |
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Volume |
9 |
Issue |
1 |
Pages |
19013 |
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Keywords |
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Abstract |
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Programme |
109,1201 |
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Corporate Author |
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Thesis |
Bachelor's thesis |
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ISSN |
2045-2322 |
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yes |
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Call Number |
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Serial |
7705 |
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Author |
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Title |
The retrospective analysis of Antarctic tracking data project |
Type |
Journal |
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Year |
2020 |
Publication |
Scientific Data |
Abbreviated Journal |
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Volume |
7 |
Issue |
1 |
Pages |
94 |
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Keywords |
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Abstract |
The Retrospective Analysis of Antarctic Tracking Data (RAATD) is a Scientific Committee for Antarctic Research project led jointly by the Expert Groups on Birds and Marine Mammals and Antarctic Biodiversity Informatics, and endorsed by the Commission for the Conservation of Antarctic Marine Living Resources. RAATD consolidated tracking data for multiple species of Antarctic meso- and top-predators to identify Areas of Ecological Significance. These datasets and accompanying syntheses provide a greater understanding of fundamental ecosystem processes in the Southern Ocean, support modelling of predator distributions under future climate scenarios and create inputs that can be incorporated into decision making processes by management authorities. In this data paper, we present the compiled tracking data from research groups that have worked in the Antarctic since the 1990s. The data are publicly available through biodiversity.aq and the Ocean Biogeographic Information System. The archive includes tracking data from over 70 contributors across 12 national Antarctic programs, and includes data from 17 predator species, 4060 individual animals, and over 2.9 million observed locations. |
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Programme |
109,1091,1201 |
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Thesis |
Bachelor's thesis |
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Edition |
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ISSN |
2052-4463 |
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yes |
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Call Number |
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Serial |
7691 |
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Author |
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Title |
Tracking of marine predators to protect Southern Ocean ecosystems |
Type |
Journal |
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Year |
2020 |
Publication |
Nature |
Abbreviated Journal |
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Volume |
580 |
Issue |
7801 |
Pages |
87-92 |
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Keywords |
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Abstract |
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Programme |
394,1091,1182,1201 |
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Thesis |
Bachelor's thesis |
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Edition |
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ISSN |
1476-4687 |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
7673 |
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Author |
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Title |
Enhanced upward heat transport at deep submesoscale ocean fronts |
Type |
Journal |
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Year |
2020 |
Publication |
Nature Geoscience |
Abbreviated Journal |
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Volume |
13 |
Issue |
1 |
Pages |
50-55 |
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Keywords |
Physical oceanography |
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Abstract |
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Programme |
109,1201 |
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Address |
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Corporate Author |
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Thesis |
Bachelor's 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 |
1752-0908 |
ISBN |
1752-0908 |
Medium |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
8264 |
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Author |
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Title |
A vegetation control on seasonal variations in global atmospheric mercury concentrations |
Type |
Journal |
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Year |
2018 |
Publication |
Nature Geoscience |
Abbreviated Journal |
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Volume |
11 |
Issue |
4 |
Pages |
244 |
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Keywords |
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Abstract |
Terrestrial vegetation contributes to the seasonal variation of atmospheric mercury concentrations, according to analyses of atmospheric trace gas dynamics and satellite data. The data show that the photosynthetic activity of vegetation correlates with atmospheric mercury. |
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Programme |
416,1028 |
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Corporate Author |
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Thesis |
Bachelor's thesis |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1752-0908 |
ISBN |
1752-0908 |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
7230 |
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Author |
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Title |
Global phenological insensitivity to shifting ocean temperatures among seabirds |
Type |
Journal |
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Year |
2018 |
Publication |
Nature Climate Change |
Abbreviated Journal |
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Volume |
8 |
Issue |
4 |
Pages |
313-318 |
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Keywords |
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Abstract |
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Programme |
388,1036 |
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Corporate Author |
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Thesis |
Bachelor's thesis |
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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 |
1758-6798 |
ISBN |
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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 |
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Call Number |
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Serial |
7237 |
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| Permanent link to this record |
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Author |
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Title |
Under-estimated wave contribution to coastal sea-level rise |
Type |
Journal |
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Year |
2018 |
Publication |
Nature Climate Change |
Abbreviated Journal |
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Volume |
8 |
Issue |
3 |
Pages |
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Keywords |
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Abstract |
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Programme |
688 |
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Campaign |
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Address |
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Corporate Author |
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Thesis |
Bachelor's thesis |
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Place of Publication |
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Summary Language |
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Series Editor |
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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 |
1758-6798 |
ISBN |
1758-6798 |
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 |
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Call Number |
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Serial |
7045 |
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| Permanent link to this record |
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Author |
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Title |
Climate-driven range shifts of the king penguin in a fragmented ecosystem |
Type |
Journal |
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Year |
2018 |
Publication |
Nature Climate Change |
Abbreviated Journal |
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Volume |
8 |
Issue |
3 |
Pages |
245 |
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Keywords |
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Abstract |
Ecological niche modelling of king penguins in the Southern Ocean, validated with population genomics and palaeodemography data, is used to reconstruct past range shifts and identify future vulnerable areas and potential refugia under climate change. |
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Programme |
109,137,354 |
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Campaign |
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Address |
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Corporate Author |
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Thesis |
Bachelor's thesis |
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Publisher |
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Place of Publication |
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Summary Language |
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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 |
1758-6798 |
ISBN |
1758-6798 |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
7097 |
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| Permanent link to this record |
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Author |
Eveline Pinseel, Steven B. Janssens, Elie Verleyen, Pieter Vanormelingen, Tyler J. Kohler, Elisabeth M. Biersma, Koen Sabbe, Bart Van de Vijver, Wim Vyverman |
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Title |
Global radiation in a rare biosphere soil diatom |
Type |
Journal |
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Year |
2020 |
Publication |
Nature Communications |
Abbreviated Journal |
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Volume |
11 |
Issue |
1 |
Pages |
2382 |
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Keywords |
Biogeography Phylogenetics Speciation |
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Abstract |
Soil micro-organisms drive the global carbon and nutrient cycles that underlie essential ecosystem functions. Yet, we are only beginning to grasp the drivers of terrestrial microbial diversity and biogeography, which presents a substantial barrier to understanding community dynamics and ecosystem functioning. This is especially true for soil protists, which despite their functional significance have received comparatively less interest than their bacterial counterparts. Here, we investigate the diversification of Pinnularia borealis, a rare biosphere soil diatom species complex, using a global sampling of >800 strains. We document unprecedented high levels of species-diversity, reflecting a global radiation since the Eocene/Oligocene global cooling. Our analyses suggest diversification was largely driven by colonization of novel geographic areas and subsequent evolution in isolation. These results illuminate our understanding of how protist diversity, biogeographical patterns, and members of the rare biosphere are generated, and suggest allopatric speciation to be a powerful mechanism for diversification of micro-organisms. |
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Programme |
136,1167 |
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Address |
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Corporate Author |
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Thesis |
Bachelor's thesis |
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Publisher |
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Place of Publication |
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Summary Language |
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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 |
2041-1723 |
ISBN |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
8269 |
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| Permanent link to this record |
