. (2020). Stress factors resulting from the Arctic vernal sea-ice melt: Impact on the viability of bacterial communities associated with sympagic algae (Vol. 8).
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. (2020). An update on Inuit perceptions of their changing environment, Qikiqtaaluk (Baffin Island, Nunavut) (Vol. 8).
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. (2020). Estimates of net community production from multiple approaches surrounding the spring ice-edge bloom in Baffin Bay (Vol. 8).
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. (2009). Relating Demographic Performance to Breeding-Site Location in the King Penguin
. The Condor, 111(1), 81–87.
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. (2013). Symmetry of black wingtips is related to clutch size and integument coloration in Black-legged Kittiwakes ( Rissa tridactyla )
. The Auk, 130(3), 541–547.
Abstract: Fluctuating asymmetry has been suggested to be a phenotypic marker of developmental stability and is often seen as an indicator of overall quality. However, its role in sexual selection has been debated. To determine the potential role of black wingtip asymmetry in sexual selection in Black-legged Kittiwakes (Rissa tridactyla), we investigated whether symmetry was correlated with reproductive success and integument coloration, a trait probably sexually selected in this species. We found that, in males, asymmetry was associated with low clutch size and brood size but was independent of fledging success, which suggests that wingtip symmetry may reflect fertility in males. Asymmetry of black wingtip was also associated with duller integument, which emphasizes the potential importance of integument color in indicating individual quality. Further studies are needed to determine whether Black-legged Kittiwakes can discriminate between asymmetric and symmetric birds and use it as a cue in mate choice or intrasexual competition.
Programme: 1162
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K. Breili, R. Hougen, D. I. Lysaker, O. C. D. Omang, B. Tangen. (2017). (Vol. 7).
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David Boertmann, Flemming Merkel, Olivier Gilg. (2020). Seabird Breeding Colonies in East and North Greenland: A Baseline (Vol. 73).
Keywords: climate change colonial seabirds distribution Greenland
Programme: 1036
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. (2015). The Recent Evolution of a Maternally-Inherited Endosymbiont of Ticks Led to the Emergence of the Q Fever Pathogen, Coxiella burnetii.
. PLoS Pathog., 11(5), e1004892.
Abstract: Q fever is a highly infectious disease with a worldwide distribution. Its causative agent, the intracellular bacterium Coxiella burnetii, infects a variety of vertebrate species, including humans. Its evolutionary origin remains almost entirely unknown and uncertainty persists regarding the identity and lifestyle of its ancestors. A few tick species were recently found to harbor maternally-inherited Coxiella-like organisms engaged in symbiotic interactions, but their relationships to the Q fever pathogen remain unclear. Here, we extensively sampled ticks, identifying new and atypical Coxiella strains from 40 of 58 examined species, and used this data to infer the evolutionary processes leading to the emergence of C. burnetii. Phylogenetic analyses of multi-locus typing and whole-genome sequencing data revealed that Coxiella-like organisms represent an ancient and monophyletic group allied to ticks. Remarkably, all known C. burnetii strains originate within this group and are the descendants of a Coxiella-like progenitor hosted by ticks. Using both colony-reared and field-collected gravid females, we further establish the presence of highly efficient maternal transmission of these Coxiella-like organisms in four examined tick species, a pattern coherent with an endosymbiotic lifestyle. Our laboratory culture assays also showed that these Coxiella-like organisms were not amenable to culture in the vertebrate cell environment, suggesting different metabolic requirements compared to C. burnetii. Altogether, this corpus of data demonstrates that C. burnetii recently evolved from an inherited symbiont of ticks which succeeded in infecting vertebrate cells, likely by the acquisition of novel virulence factors.
Programme: 333
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. (2022). (Vol. 17).
Keywords: Animal behavior Animal sociality Birds Equipment Feathers Legs Molting Penguins
Programme: 137
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Candice Michelot, Akiko Kato, Thierry Raclot, Yan Ropert-Coudert. (2021). (Vol. 16).
Keywords: Animal behavior Animal sexual behavior Animal sociality Birds Foraging Nesting habits Penguins Reproductive success
Programme: 1091
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