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Extreme genetic diversity in asexual grass thrips populations.
The continuous generation of genetic variation has been proposed as one of the main factors explaining the maintenance of sexual reproduction in nature. However, populations of asexual individuals may attain high levels of genetic diversity through within-lineage diversification, replicate transitio...
Phenotypic plasticity of Populus nigra to hydrogeomorphological constraints: A trait-based approach
International audience Black poplar (Populus nigra L.) pioneer trees are riparian ecosystem engineers which modify their fluvial habitat, e.g., by enhancing sediment accumulation. The engineer effect implies that young individuals are successful in establishment. However, the specific above- and bel...
Observations on the nesting of Osmia (Allosmia) sybarita Smith 1853 (Hymenoptera, Megachilidae) in Crete
International audience We provide the first observational evidence that the females of Osmia (Allosmia) sybarita Smith 1853 bury their nest made in empty snail shells. This behaviour is similar to that of several of its sister species in the subgenus Allosmia, such as O. (Allosmia) lhotelleriei Pére...
Na + /K + ‐ ATP ase gene duplications in clitellate annelids are associated with freshwater colonization
Species specific gene expression dynamics during harmful algal blooms
International audience Harmful algal blooms are caused by specific members of microbial communities. Understanding the dynamics of these events requires comparing the strategies developed by the problematic species to cope with environmental fluctuations to the ones developed by the other members of...
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Movements and foraging strategies in Griffon vultures (Gyps fulvus) and conservation plans
In the current context of global change, organism are exposed to new selective pressures in their environments modified by human activities, and we observe the emergence of evolutionary traps. Moving can be interpreted as a consequence of these global changes, but also as the opportunity for an indi...
A change of expression in the conserved signaling gene MKK7 is associated with a selective sweep in the western house mouse Mus musculus domesticus
International audience Changes in gene expression are known to occur between closely related species, but it is not yet clear how many of these are due to random fixation of allelic variants or due to adaptive events. In a microarray survey between subspecies of the Mus musculus complex, we identifi...
Molecular Data Reveal the Presence of Three Plocamium Lamouroux Species with Complex Patterns of Distribution in Southern Chile
International audience Plocamium Lamouroux is a widespread genus for which 45 species are currently recognized. However, classical taxonomy based only on morphological characters, is problematic within this genus. The use of molecular tools has uncovered cryptic genetic species, mistakenly grouped u...
Treveri and Mediomatrici: Spatial delimitation, group identities and the question of definition as regional archaeological cultures
International audience Our knowledge of the civitates of the Treveri and Mediomatrici in the late Iron Age stems primarily from Caesar’s descriptions in the account of his deeds, the Commentarii Belli Gallici. In the Gallo-Roman period, both names survived as denominations of administrative units wi...
Covert Plants: Vegetal Consciousness and Agency in an Anthropocentric World
Covert Plants contributes to newly emerging discourses on the implications of vegetal life for the arts and culture. This stretches to changes in our perception of ‘nature’ and to the adapting roles of botany, evolutionary ecology, and environmental aesthetics in the humanities. Its editors and cont...
Evolutionary impacts of urbanization in the Great tit : from phenotype to (epi)genomes
Urbanization is a worldwide process irreversibly converting natural habitats into artificialized areas. Cities represent a new, human-made environment with novel environmental conditions that might directly impact urban-dwelling species and their evolutionary trajectories. Although they are of major...
It is not unusual for contemporary linguists to claim that “Modern Linguistics began in 1957” (with the publication of Noam Chomsky’s Syntactic Structures). Some of the essays in Chomskyan (R)evolutions examine the sources, the nature and the extent of the theoretical changes Chomsky introduced in t...
The ontogeny of diving abilities in subantarctic fur seal pups: developmental trade-off in response to extreme fasting ?
International audience 1. A major hypothesis of life-history theory is that conditions of early development affect future survival and reproductive success. Responses to detrimental environments during early ontogeny may involve trade-offs between current and future fitness. Yet, the functional mech...
The Contribution of Vegetation and Landscape Configuration for Predicting Environmental Change Impacts on Iberian Birds
International audience Although climate is known to be one of the key factors determining animal species distributions amongst others, projections of global change impacts on their distributions often rely on bioclimatic envelope models. Vegetation structure and landscape configuration are also key...
An automated approach for the identification of horizontal gene transfers from complete genomes reveals the rhizome of Rickettsiales.
International audience ABSTRACT: BACKGROUND: Horizontal gene transfer (HGT) is considered to be a major force driving the evolutionary history ofprokaryotes. HGT is widespread in prokaryotes, contributing to the genomic repertoire of prokaryoticorganisms, and is particularly apparent in Rickettsiale...
Biological metaphors and methods in historical linguistics (1): Introduction
Evolutionary biology and historical linguistics share a long history of scientific exchange, reflected both not only in the sharing and transfer of metaphors but more recently also in the transfer of methods. Already Charles Darwin claimed that both species and languages evolve in tree-like patterns...
Virus infections suppresses Nicotiana benthamiana adaptive phenotypic plasticity
S PAUL, N. D., & AYRES, P. G. (1986). INTERFERENCE BETWEEN HEALTHY AND RUSTED GROUNDSEL (SENECIO VULGARIS L.) WITHIN MIXED POPULATIONS OF DIFFERENT DENSITIES AND PROPORTIONS. New Phytologist, 104(2), 257-269. doi:10.1111/j.1469-8137.1986.tb00650.x
Analysis of stop-gain and frameshift variants in human innate immunity genes.
Loss-of-function variants in innate immunity genes are associated with Mendelian disorders in the form of primary immunodeficiencies. Recent resequencing projects report that stop-gains and frameshifts are collectively prevalent in humans and could be responsible for some of the inter-individual var...
Specters of Marx: A Review of Adam's Tongue by Derek Bickerton
Desarrollo, causas remotas e historia natural
Having as starting point that a proximal cause is one which effects can be registered in the states of an individual organism, in this work I will argue that what defines an ultimate cause is the fact that its effects can be registered in the evolution of lineages, and not simply in population state...
Accounting for vertebrate limbs: from Owen’s homology to novelty in evo-devo [Review of the book Richard Owen’s On the Nature of Limbs: A Discourse, by ed. R. Amundson]
Introduction: This article reviews the recent reissuing of Richard Owen’s On the Nature of Limbs and its three novel, introductory essays. These essays make Owen’s 1849 text very accessible by discussing the historical context of his work and explaining how Owen’s ideas relate to his larger intellec...
Regional development: contribution of evolutionary biology
Session E1-1 : Méthodes et modélisation (F2407). Proceedings on CD-ROM. The full text of this paper is available: http://www.ulb.ac.be/soco/asrdlf/index.html (lien consulté le 20.10.2006) This paper tries to set out a potential of application of some evolutionary biology concepts to the issue of reg...
Do North Atlantic eels show parallel patterns of spatially varying selection?
International audience Background: The two North Atlantic eel species, the European and the American eel, represent an ideal system in which to study parallel selection patterns due to their sister species status and the presence of ongoing gene flow. A panel of 80 coding-gene SNPs previously analyz...
Ultrastructure of ellipsoidal magnetotactic multicellular prokaryotes depicts their complex assemblage and cellular polarity in the context of magnetotaxis
International audience Magnetotactic multicellular prokaryotes (MMPs) consist of unique microorganisms formed by genetically identical Gram-negative bacterial that live as a single individual capable of producing magnetic nanoparticles called magnetosomes. Two distinct morphotypes of MMPs are known:...
Ancient mitochondrial DNA from Malaysian hair samples: Some indications of Southeast Asian population movements
International audience The late Pleistocene and early Holocene population history of Southeast Asia is not well-known. Our study provides new data on mitochondrial DNA (mtDNA) lineages of the aboriginal inhabitants of the Malay Peninsula, and through an extensive comparison to the known mtDNA divers...