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Title |
Sympatric Breeding Auks Shift between Dietary and Spatial Resource Partitioning across the Annual Cycle
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Journal Article |
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Year |
2013 |
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PLOS ONE |
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Volume |
8 |
Issue |
8 |
Pages |
e72987 |
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388 |
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1932-6203 |
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yes |
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4540 |
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Author |
Hagelberg Erika, Hofreiter Michael, Keyser Christine, |
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Title |
Ancient DNA: the first three decades |
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Journal Article |
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Year |
2015 |
Publication |
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES |
Abbreviated Journal |
Philos. Trans. R. Soc. Lond., B, Biol. Sci. |
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Volume |
370 |
Issue |
1660 |
Pages |
20130371 |
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Abstract |
When Russell Higuchi, Allan Wilson and co-workers reported the molecular cloning of a small fragment of DNA from a piece of dry tissue of a quagga, an extinct member of the horse family [[1][1]], they could hardly imagine that 30 years later several hundred scientists would meet at The Royal Society |
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1038 |
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0962-8436 |
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yes |
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6340 |
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Author |
Wagner R.H., Helfenstein F. & Danchin E. |
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Title |
Female choice of young sperm in a genetically monogamous bird. |
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Journal Article |
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Year |
2004 |
Publication |
Proceedings of the royal society b-biological sciences |
Abbreviated Journal |
Proc. Biol. Sci. |
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Volume |
271 |
Issue |
Suppl 4 |
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Abstract |
When females copulate with multiple males the potential exists for female sperm choice. Females may increase the probability of being fertilized by preferred males by selectively retaining their sperm while ejecting the sperm of unfavoured males. An alternative criterion to male quality for female sperm choice may be sperm age because old sperm degrade and can lead to zygote death or unhealthy offspring. Here, we report that in a genetically monogamous bird, the black-legged kittiwake Rissa tridactyla, females eject their mates' sperm according to when the copulations were performed. Following copulations that were performed approximately two weeks before egg laying, females ejected inseminations at high frequencies while retaining inseminations that occurred soon before laying. Females that suffered hatching failure had ejected sperm from early copulations less than half as frequently as females whose entire clutches hatched. Furthermore, chicks that hatched from eggs fertilized by old sperm were in poor condition relative to those fertilized by young sperm. These findings support the 'young sperm' hypothesis, which predicts that females choose fresh sperm to avoid reproductive failure and are the first to show intra-male sperm choice by females. |
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429 |
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0962-8452 |
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yes |
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Serial |
3078 |
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Author |
Sarah Kada, Karen D. McCoy, Thierry Boulinier |
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Title |
Impact of life stage-dependent dispersal on the colonization dynamics of host patches by ticks and tick-borne infectious agents |
Type |
Book Chapter |
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Year |
2017 |
Publication |
Parasites & Vectors |
Abbreviated Journal |
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Volume |
10 |
Issue |
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Pages |
375 |
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Keywords |
Allee effect Borrelia burgdorferi Climate change Ixodes uriae Lyme disease Ornithodoros maritimus Parasite spread Range expansion Vertical transmission |
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Abstract |
When colonization and gene flow depend on host-mediated dispersal, a key factor affecting vector dispersal potential is the time spent on the host for the blood meal, a characteristic that can vary strongly among life history stages. Using a 2-patch vector-pathogen population model and seabird ticks as biological examples, we explore how vector colonization rates and the spread of infectious agents may be shaped by life stage-dependent dispersal. We contrast hard (Ixodidae) and soft (Argasidae) tick systems, which differ strongly in blood- feeding traits. |
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Programme |
333,1151 |
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Bachelor's thesis |
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ISSN |
1756-3305 |
ISBN |
1756-3305 |
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yes |
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Call Number |
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Serial |
6742 |
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Title |
DNA from lake sediments reveals long-term ecosystem changes after a biological invasion |
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Journal |
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Year |
2018 |
Publication |
Science Advances |
Abbreviated Journal |
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Volume |
4 |
Issue |
5 |
Pages |
eaar4292 |
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Abstract |
What are the long-term consequences of invasive species? After invasion, how long do ecosystems require to reach a new equilibrium? Answering these questions requires long-term, high-resolution data that are vanishingly rare. We combined the analysis of environmental DNA extracted from a lake sediment core, coprophilous fungi, and sedimentological analyses to reconstruct 600 years of ecosystem dynamics on a sub-Antarctic island and to identify the impact of invasive rabbits. Plant communities remained stable from AD 1400 until the 1940s, when the DNA of invasive rabbits was detected in sediments. Rabbit detection corresponded to abrupt changes of plant communities, with a continuous decline of a dominant plant species. Furthermore, erosion rate abruptly increased with rabbit abundance. Rabbit impacts were very fast and were stronger than the effects of climate change during the 20th century. Lake sediments can allow an integrated temporal analysis of ecosystems, revealing the impact of invasive species over time and improving our understanding of underlying mechanisms. Rabbits have had a stronger impact on the landscape and plant communities of a remote island than one century of climate change. Rabbits have had a stronger impact on the landscape and plant communities of a remote island than one century of climate change. |
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Programme |
1094 |
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ISSN |
2375-2548 |
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2375-2548 |
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Approved |
yes |
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Serial |
7353 |
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Author |
Weimerskirch Henri, Louzao Maite, de Grissac Sophie, Delord Karine, |
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Title |
Changes in Wind Pattern Alter Albatross Distribution and Life-History Traits
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Type |
Journal Article |
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Year |
2012 |
Publication |
Science |
Abbreviated Journal |
Science |
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Volume |
335 |
Issue |
6065 |
Pages |
211 -214 |
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Abstract |
Westerly winds in the Southern Ocean have increased in intensity and moved poleward. Using long-term demographic and foraging records, we show that foraging range in wandering albatrosses has shifted poleward in conjunction with these changes in wind pattern, while their rates of travel and flight speeds have increased. Consequently, the duration of foraging trips has decreased, breeding success has improved, and birds have increased in mass by more than 1 kilogram. These positive consequences of climate change may be temporary if patterns of wind in the southern westerlies follow predicted climate change scenarios. This study stresses the importance of foraging performance as the key link between environmental changes and population processes.
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Programme |
109 |
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ISSN |
0036-8075 |
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Approved |
yes |
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Serial |
3908 |
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Journal Article |
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Year |
2011 |
Publication |
Polar Science |
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Volume |
5 |
Issue |
2 |
Pages |
286-297 |
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Keywords |
Benthic, Ecological niche, Habitat, Pelagic, Southern Ocean, Stable isotopes, |
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Programme |
109;1124;1142 |
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Bachelor's thesis |
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ISSN |
1873-9652 |
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yes |
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Serial |
3255 |
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Title |
A CATALOG OF ECLIPSING BINARIES AND VARIABLE STARS OBSERVED WITH ASTEP 400 FROM DOME C, ANTARCTICA |
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Journal |
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Year |
2016 |
Publication |
The Astrophysical Journal Supplement Series |
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Volume |
226 |
Issue |
2 |
Pages |
21 |
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Abstract |
We used the large photometric database of the ASTEP program, whose primary goal was to detect exoplanets in the southern hemisphere from Antarctica, to search for eclipsing binaries (EcBs) and variable stars. 673 EcBs and 1166 variable stars were detected, including 31 previously known stars. The resulting online catalogs give the identification, the classification, the period, and the depth or semi-amplitude of each star. Data and light curves for each object are available at http://astep-vo.oca.eu. |
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1066 |
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ISSN |
0067-0049 |
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yes |
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Serial |
5162 |
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Author |
Mike Lockwood, Carl Haines, Luke A. Barnard, Mathew J. Owens, Chris J. Scott, Aude Chambodut, Kathryn A. McWilliams |
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Title |
Semi-annual, annual and Universal Time variations in the magnetosphere and in geomagnetic activity: 4. Polar Cap motions and origins of the Universal Time effect |
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Journal |
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Year |
2021 |
Publication |
Journal of Space Weather and Space Climate |
Abbreviated Journal |
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Volume |
11 |
Issue |
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Pages |
15 |
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139 |
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2115-7251 |
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yes |
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Serial |
8076 |
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Author |
A. Baranov, R. Tenzer, A. Morelli |
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Title |
Updated Antarctic crustal model |
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Journal |
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Year |
2021 |
Publication |
Gondwana Research |
Abbreviated Journal |
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Volume |
89 |
Issue |
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Pages |
1-18 |
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Keywords |
Antarctica Crustal structure Gondwana Sediments |
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133 |
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1342-937X |
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yes |
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7994 |
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