Comptes Rendus Biologies
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Evolution of hemocyte concentration in the melanogaster subgroup species.
We explore two possible hypotheses about the ecological factors driving the evolution of hemocyte load in insects. The first is parasite infection risk, its variability and the genetic diversity of parasites. The other supposes that all the other factors of environmental stress drive the evolution th...
[Experimental study on the sensory capabilities of coral-reef fish larvae for the recognition of their settlement location].
Some experiments in aquarium and in situ have been carried out to investigate the sensory abilities of coral reef fish larvae in the recognition of their settlement location. Ten out 12 species studied detected their settlement location due to the presence of conspecifics and not by habitat character...
Ultrastructural study of spermiogenesis in a rare desert amphisbaenian Diplometopon zarudnyi.
Spermiogenesis, in particular the head differentiation of Diplometopon zarudnyi, was studied at the ultrastructural level by Transmission Electron Microscope (TEM). The process includes acrosomal vesicle development, nuclear elongation, chromatin condensation and exclusion of excess cytoplasm. In st...
[In Process Citation].
Hydroxycarbamide: clinical aspects.
Due to its oral route of administration and mild toxicity profile, as well as its potent laboratory and clinical effects, hydroxyurea (or hydroxycarbamide) has been the primary focus of fetal hemoglobin (HbF) induction strategies for the treatment of children with sickle cell anemia (SCA). When admi...
The New Microbiology: a conference at the Institut de France.
In May 2012, three European Academies held a conference on the present and future of microbiology. The conference, entitled "The New Microbiology", was a joint effort of the French Académie des sciences, of the German National Academy of Sciences Leopoldina and of the British Royal Society. The orga...
Dynamic topology of the cephalochordate to amniote morphological transition: A self-organized system of Russian dolls
We are able to show that the formation of a vertebrate body follows a sequence: first, formation of dorsal folds, then head and heart as dorsal and ventral folds, and finally another dorsal fold, which eventually builds up the chorion. This order has a physical origin linked to the velocity field of...
A type of unicoloniality within the native range of the fire antSolenopsis saevissima
We conducted intraspecific aggressiveness tests in French Guiana between workers originating from 15 human-disturbed sites. We identified two “colonial groups” spread over 54 km and 12.5 km, respectively. Workers from the same group never attacked each other, but inter-group confrontatio...
Phylogenetic inference inOdontesthesandAtherina(Teleostei: Atheriniformes) with insights into ecological adaptation
This contribution provides an insight into Atheriniformes systematics based on four mitochondrial regions: 12S rRNA, cytb, COI and control region (2794 bp in total). In the Atherinopsoidei (New World silversides), comparisons among five species of Odontesthes, O. argentinens...
Performance of distance-based DNA barcoding in the molecular identification of Primates
We compare the performance of cox1 (166 sequences; 50 nominal species) in species-identification with that of two other mitochondrial markers, 16S ribosomal RNA (412 sequences, 92 species) and cytochrome b ( cob: 547 sequences, 72 species). A wide gap exist between intra- and int...