Showing papers in "Comptes Rendus Biologies in 2012"

TL;DR: The results indicate that the evolutionary history of cetartiodactyls was punctuated by four main phases of rapid radiation during the Cenozoic era, and shows that the high species diversity now observed in the families Bovidae and Cervidae accumulated mainly during the Late Miocene and Plio-Pleistocene.

TL;DR: Using multivariate analysis on sample×allozyme-frequency matrices, it is confirmed the widespread occurrence of the Southern-Hemisphere form of M. galloprovincialis along the shores from the North Patagonia region of Chile to the southern tip of the South American continent.

TL;DR: A comprehensive mitochondrial phylogeny of the family Mugilidae (Durand et al., Mol. Phylogenet. Evol. 64 (2012) 73-92 [1]) demonstrated the polyphyly or paraphyly of a proportion of the 20 genera in the family as mentioned in this paper.

TL;DR: Results strongly suggest that a double coating of collagen+fibronectin provides a better support structure for endothelial cell growth and contributes to improve the ability of vascular implants to become and remain endothelialized.

TL;DR: In this paper, the authors performed morphological and genetic techniques to identify fossil botanical species using a DNA barcode and found that seeds belonging to two plant species: Olea europaea L. and Cornus mas L.

TL;DR: This work represents the first trial to validate a morpho-colorimetric characterization method by direct comparison with molecular data, proving that the 113 measured features of the germplasm resulted adequate to achieve a clear discrimination among the synonymy groups.

TL;DR: Vascular flora of Mediterranean temporary pools has been studied with the aims to define its diversity and to individuate the ecological characteristics of the different plant groups associated with this relevant and endangered habitat type as discussed by the authors.

TL;DR: Little efficient pollinisers were found and predicted in varieties; nevertheless, some new efficient pair-wise allele combinations are predicted and could be created.

TL;DR: In the mutualisms involving the myrmecophyte Cecropia obtusa and Azteca ovaticeps or A. alfari, both predatory, the ants defend their host trees from enemies and provide them with nutrients as mentioned in this paper.

TL;DR: Phylogenetic analyses showed that individuals from the central Mediterranean belong to the O. vulgaris species whose limits should nevertheless be clarified, and two high-frequency haplotypes were present in all locations.

TL;DR: The nature of the proliferation from the mature female flowers and their outcome, particularly those at the origin of embryogenic and budding strains are described and the advantages of this novel multiplication method as compared to the currently available ones are discussed.

TL;DR: The time since the last fire and the number of fires were the most explanatory fire variables, governing the structure of post-fire plant communities, however, environmental factors, such as slope or exposure, also made a significant contribution.

TL;DR: Spermiogenesis in Robphildollfusium fractum begins with the formation of a differentiation zone containing: two centrioles, each bearing striated rootlets, nucleus, several mitochondria and an intercentriolar body constituted by seven electron-dense layers.

TL;DR: Important germination traits of C. maritima should be taken into account in possible reintroduction attempts aimed at restoring threatened populations of this species, according to principal results.

TL;DR: The electron-dense material surrounding one of the axonemes in the anterior spermatozoon extremity constitutes the unique distinguishing ultrastructural character of lepocreadioideans, and it is present in spermatozoa of lePocreadiids, aephnidiogenids and gyliauchenids.

TL;DR: During an oceanographic campaign, new coralligenous structures have been discovered in northern Cap Corse, these structures, never previously identified in the Mediterranean Sea, are named "coralligenous atolls" because of their circular shape.

TL;DR: In this paper, the accumulation of cadmium (Cd) and zinc (Zn) (trace elements) in the organs of young tomato plants (Lycopersicon esculentum L. var. Rio Grande) and their effects on the rate of chlorophyll and enzyme activities involved in the antioxidant system: catalase (CAT), glutathion-S-transferase (GST), and peroxysase ascorbate (APX).

TL;DR: Abdelrahmen et al. as mentioned in this paper investigated the effect of the proliferation of dinoflagelles de Alexandrium spp. on the production conchylicole and aussi peut etre fatale for la sante humaine.

TL;DR: An inventory of different types of antennal sensilla is provided and certain morphological features confirmed the separation of the apoid wasps from the rest of the Apoidea (i.e., bees).

TL;DR: It is suggested here that, in at least some species of the family Chaerilidae Simon, this phenomenon is absent, and this new discovery may initiate important comparative eco-physiological studies.

TL;DR: In this article, a more up-to-date view of the metallothioneins in non-mammalian tetrapods has been provided by increasing the still scarce knowledge concerning the primary structure and the evolution of metallo-binding proteins in amphibians.

TL;DR: In order to correctly assign the origin of individuals from two distinct tortoise lineages, the accuracy of shape statistics depending on the inclusion of different numbers of shape components is studied.

TL;DR: These respiration rates are higher than published ex situ estimates for cold-seep or hydrothermal vent bivalves associated to sulphide-oxidizing symbionts.

TL;DR: A biological economic model based on prey-predator interactions to study the dynamical behaviour of a fishery resource system consisting of one prey and two predators surviving on the same prey and the stability and chaotic phenomena are investigated.

TL;DR: A new species of scorpion belonging to the family Pseudochactidae and the genus Vietbocap is described from the Tham Nam Lot cave, located in the Laotian part of the Khammouan-Ke Bang karst system in Southeast Asia, and presents an even greater degree of adaptation to cave life.

TL;DR: Molecular analyses based on the 16S rRNA genes revealed the diversity of bacterial communities in the digestive system, of which, the Epsilonproteobacteria phylum could be considered as one of the major bacterial group.

TL;DR: A second species of scorpion belonging to the family Pseudochactidae and to the genus Vietbocap is described from two specimens collected in the Thien Duong cave, which belongs to the Vom cave system, in the Phong Nha - Ke Bang National Park, Quang Binh Province, Vietnam.

TL;DR: The markedly increased insulinotropic effect of IL-1β in obese diabetes-resistant sand rat could participate and be involved in pancreatic β-cell hyperactivity that compensates for insulin resistance and thereby prevent the development of type 2 diabetes in these animals.

TL;DR: This study investigated if the tenebrionid beetles forming an ensemble on a dune zonation showed variations in community organization (relative abundances and species diversity) in different but spatially associated biotopes defined by different plant communities.

TL;DR: In this paper, the relations between the Fourier coefficients and its geometric parameters are computed for normalization and reorientation of three-dimensional contours, and these relations can be used to perform inter-individual comparisons between contours regardless of differences in viewpoint or global size.