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Claude Rispe
Institut national de la recherche agronomique
127Publications
26H-index
3,361Citations
Publications 127
Newest
#1N. Pierre Charrier (INRA: Institut national de la recherche agronomique)H-Index: 1
#2Axelle Hermouet (INRA: Institut national de la recherche agronomique)H-Index: 1
Last.Claude Rispe (INRA: Institut national de la recherche agronomique)H-Index: 26
view all 10 authors...
Hard ticks are widely distributed across temperate regions, show strong variation in host associations, and are potential vectors of a diversity of medically important zoonoses, such as Lyme disease. To address unresolved issues with respect to the evolutionary relationships among certain species or genera, we produced novel RNA-Seq data sets for nine different Ixodes species. We combined this new data with 18 data sets obtained from public databases, both for Ixodes and non-Ixodes hard tick spe...
#1Yann Dussert (INRA: Institut national de la recherche agronomique)H-Index: 2
#2Isabelle D. Mazet (INRA: Institut national de la recherche agronomique)H-Index: 4
Last.François Delmotte (INRA: Institut national de la recherche agronomique)H-Index: 26
view all 10 authors...
#1Maria V. Murgia (Purdue University)H-Index: 1
#2Lesley Bell-Sakyi (University of Liverpool)H-Index: 18
Last.Catherine A. Hill (Purdue University)H-Index: 20
view all 15 authors...
#1N. Pierre Charrier (INRA: Institut national de la recherche agronomique)H-Index: 1
#2Marjorie Couton (INRA: Institut national de la recherche agronomique)H-Index: 1
Last.Claude Rispe (INRA: Institut national de la recherche agronomique)H-Index: 26
view all 8 authors...
Ixodes ricinus is the most important vector of tick-borne diseases in Europe. A better knowledge of its genome and transcriptome is important for developing control strategies. Previous transcriptomic studies of I. ricinus have focused on gene expression during the blood meal in specific tissues. To obtain a broader picture of changes in gene expression during the blood meal, our study analysed the transcriptome at the level of the whole body for both nymphal and adult ticks. Ixodes ricinus tick...
#1Julie Jaquiéry (University of Rennes)H-Index: 19
#2Jean Peccoud (University of Poitiers)H-Index: 12
Last.Claude Rispe (INRA: Institut national de la recherche agronomique)H-Index: 26
view all 17 authors...
The faster evolution of X chromosomes has been documented in several species, and results from the increased efficiency of selection on recessive alleles in hemizygous males and/or from increased drift due to the smaller effective population size of X chromosomes. Aphids are excellent models for evaluating the importance of selection in faster-X evolution because their peculiar life cycle and unusual inheritance of sex chromosomes should generally lead to equivalent effective population sizes fo...
#2Axelle DurandH-Index: 1
Last.Claude RispeH-Index: 26
view all 9 authors...
Hard ticks are vectors of numerous pathogens responsible for human and veterinary diseases. The Ixodes genus is distributed world‐wide and comprises several species that transmit the Lyme borreliosis agent (Borrelia sp.). This is the case of I. ricinus (in Europe) and I. scapularis (in the USA), two species for which complete genome projects have been undertaken. To better understand evolutionary patterns in this genus (for example how adaptations to different host species or host ranges evolved...
#1Claude Rispe (INRA: Institut national de la recherche agronomique)H-Index: 26
#2Fabrice Legeai (INRA: Institut national de la recherche agronomique)H-Index: 28
Last.François Delmotte (INRA: Institut national de la recherche agronomique)H-Index: 26
view all 9 authors...
Background Grapevine phylloxera, an insect related to true aphids, is a major historic pest of viticulture only controlled through the selection of resistant rootstocks or through quarantine regulations where grapevine is cultivated own-rooted. Transcriptomic data could help understand the bases of its original life-traits, including a striking case of polyphenism, with forms feeding on roots and forms feeding in leaf-galls. Comparisons with true aphids (for which complete genomes have been sequ...
#1Julie Jaquiéry (INRA: Institut national de la recherche agronomique)H-Index: 19
#2Solenn Stoeckel (INRA: Institut national de la recherche agronomique)H-Index: 14
Last.Jean-Christophe Simon (INRA: Institut national de la recherche agronomique)H-Index: 29
view all 13 authors...
Although evolutionary transitions from sexual to asexual reproduction are frequent in eukaryotes, the genetic bases of such shifts toward asexuality remain largely unknown. We addressed this issue in an aphid species where both sexual and obligate asexual lineages coexist in natural populations. These sexual and asexual lineages may occasionally interbreed because some asexual lineages maintain a residual production of males potentially able to mate with the females produced by sexual lineages. ...
#1Swapna R. Purandare (NU: University of Nebraska–Lincoln)H-Index: 4
#2Ryan D. Bickel (UR: University of Rochester)H-Index: 9
Last.Jennifer A. Brisson (UR: University of Rochester)H-Index: 22
view all 5 authors...
Phenotypic plasticity, the production of alternative phenotypes (or morphs) from the same genotype due to environmental factors, results in some genes being expressed in a morph-biased manner. Theoretically, these morph-biased genes experience relaxed selection, the consequence of which is the buildup of slightly deleterious mutations at these genes. Over time, this is expected to result in increased protein divergence at these genes between species and a signature of relaxed purifying selection...
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