Supervisory authorities

CNRS

Our LABEX

Our Networks

Search




Visitors logged in: 1


Home > Communication > Scientific newsletter > Scientific publications

Scientific publications Scientific publications feed

Page(s) : < | 1 | ... | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | ... | 285 |

4 July 2018

The evolutionary road from wild moth to domestic silkworm [Nature Ecology & Evolution]

The Silk Road, which derives its name from the trade of silk produced by the domestic silkworm Bombyx mori, was an important episode in the development and interaction of human civilizations. However, the detailed history behind silkworm domestication remains ambiguous, and little is known about the underlying genetics with respect to important aspects of its domestication. Here, we reconstruct the domestication processes and identify selective sweeps by sequencing 137 representative silkworm strains. The results present an evolutionary scenario in which silkworms may have been initially domesticated in China as trimoulting lines, then subjected to independent spreads along the Silk Road that gave rise to the development of most local strains, and further improved for modern silk production in Japan and China, having descended from diverse ancestral sources.(...)

Read more

4 July 2018

High intraspecific variability in morphology and diet in tropical stream fish communities [Ecology of Freshwater Fish]

Keywords : community ecology, functional traits, originality, rainforest stream, savannah stream, specialisation

Functional diversity of fish communities has been measured according to (a) interspecific variability, assuming that intraspecific variability is negligible, or (b) morphological differences, as good descriptors of complex functions, such as diet. These two assumptions have been scarcely tested on the individual level, especially in species‐rich tropical ecosystems. Here, we adapted intraspecific specialisation (ISpe) and intraspecific originality indices (IOri) to assess complementary components of intraspecific variability. Next, we applied these indices to evaluate the intra‐ and interspecific variability of morphological and diet traits in two contrasting Brazilian stream‐dwelling fish assemblages (rainforest and savannah). We also compared correlations between morphology and diet at the individual and species level to test whether accounting for intraspecific variability increases the predictability of diet due to morphological differences.(...)

Read more

4 July 2018

Lessons from a natural experiment: Allopatric morphological divergence and sympatric diversification in the Midas cichlid species complex are largely influenced by ecology in a deterministic way [Evolution Letters]

Explaining why some lineages diversify while others do not and how are key objectives in evolutionary biology. Young radiations of closely related species derived from the same source population provide an excellent opportunity to disentangle the relative contributions of possible drivers of diversification. In these settings, lineage‐specific effects are shared and can be ruled out. Moreover, the relevant demographic and ecological parameters can be estimated accurately. Midas cichlid fish in Nicaragua have repeatedly colonized several crater lakes, diverged from the same source populations, and, interestingly, diversified in some of them but not others. Here, using the most comprehensive molecular and geometric morphometric data set on Midas cichlids to date (∼20,000 SNPs, 12 landmarks, ∼700 individuals), we aim to understand why and how crater lake populations diverge and why some of them are more prone to diversify in sympatry than others.(...)

Read more

4 July 2018

Scientists on Twitter: Preaching to the choir or singing from the rooftops? [Facets]

Il y a eu de nombreux appels pour que les scientifiques partagent leurs découvertes avec la société. Certains scientifiques ont écouté ces appels à travers des plateformes de médias sociaux comme Twitter. Ici, nous demandons si Twitter permet aux scientifiques de promouvoir leurs découvertes principalement à d’autres scientifiques («inreach»), ou si cela peut les aider à atteindre un public plus large, non scientifique («outreach»). Nous avons analysé les adeptes Twitter de plus de 100 membres du corps professoral en écologie et en biologie évolutive et nous avons constaté que leurs adeptes sont en moyenne ( 55%) d’autres scientifiques. Cependant, au-delà d’un seuil d’environ 1000 adeptes, l’éventail des types d’adeptes s’est diversifié et comprenait des organismes de recherche et d’éducation, des médias, des membres du public sans association avec la science et un petit nombre de décideurs. À son tour, cette audience variée a été suivie par un plus grand nombre de personnes, ce qui a entraîné une augmentation exponentielle de la portée des médias sociaux sur les tweets des scientifiques universitaires. Le tweet a donc le potentiel de diffuser largement l’information scientifique après des efforts initiaux pour gagner des adeptes. Ces résultats devraient encourager les scientifiques à investir dans l’établissement d’une présence dans les médias sociaux pour la sensibilisation scientifique.

Read more

4 July 2018

ATLANTIC AMPHIBIANS: a data set of amphibian communities from the Atlantic Forests of South America [Ecology]

Keywords : amphibian communities, anurans, Atlantic Forest Biome, biodiversity hotspot, caecilians, Neotropical region

Amphibians are among the most threatened vertebrates in the world and this is also true for those inhabiting the Atlantic Forest hotspot, living in ecosystems that are highly degraded and threatened by anthropogenic activities. We present a data set containing information about amphibian communities sampled throughout the Atlantic Forest Biome in South America. The data were extracted from 389 bibliographic references (articles, books, theses, and dissertations) representing inventories of amphibian communities from 1940 to 2017. The data set includes 17,619 records of 528 species with taxonomic certainty, from 1,163 study sites.(...)

Read more

Page(s) : < | 1 | ... | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | ... | 285 |