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226 results on '"Chauve C"'

1. Vectorial role of some dermanyssoid mites (Acari, Mesostigmata, Dermanyssoidea)

Author

Valiente Moro C., Chauve C., and Zenner L.

Subjects
Dermanyssoidea, vector, bacteria, virus, parasite, Infectious and parasitic diseases, RC109-216
Abstract

Among transmissible diseases, vectorial diseases represent a major problem for public health. In the group of acarina, while ticks are the most commonly implicated vectors, other arthropods and notably Dermanyssoidea are also involved in the transmission of pathogenic agents. Since the role of this superfamily is at present largely unknown, we have reviewed the vectorial role of these mites in the appearance, survival and propagation of pathogens. Various authors have shown that Dermanyssoidea are implicated in the transmission of both bacteria (Salmonella, Spirocheta, Rickettsia or Pasteurella) and viruses (equine encephalitis viruses, West Nile virus, Fowl pox virus, the virus causing Newcastle disease and tick borne encephalitis viruses or hantaviruses). Finally, some authors have also shown their role in the transmission of some protozoa and filaria. As the vectorial character of such mites has been more clearly demonstrated (Dermanyssus gallinae, Ornithonyssus bacoti and Allodermanyssus sanguineus), it would be interesting to continue studies to better understand the role of this superfamily in the epidemiology of certain zoonoses.

Published
2005
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2. In vitro effect of essential oils from Cinnamomum aromaticum, Citrus limon and Allium sativum on two intestinal flagellates of poultry, Tetratrichomonas gallinarum and Histomonas meleagridis

Author

Zenner L., Callait M.P., Granier C., and Chauve C.

Subjects
essential oils, Cinnamomum aromaticum, Citrus limon, Allium sativum, T. gallinarum, H. meleagridis, Infectious and parasitic diseases, RC109-216
Abstract

Essential oils may be effective preventive or curative treatments against several flagelated poultry parasites and may become primordial either to organic farms, or as more drugs are bannished. The anti-flagellate activity of essential oils obtained from fresh leaves of Cinnamomum aromaticum, Citrus limon pericarps and Allium sativum bulbs was investigated in vitro on Tetratrichomonas gallinarum and Histomonas meleagridis. On T. gallinarum, the minimal lethal concentration (MLC) at 24 hours was 0.25 μl/ml for C. aromaticum oil, and 0.125 μl/ml for C. limon and A. sativum oils. On H. meleagridis, MLC was 0.5 μl/ml for C. aromaticum oil and 1 μl/m l for C. limon and A. sativum oils at 24 and 48 hours. Moreover, no synergistic effects were evidenced in vitro. The essential oil constituents, based on their GC retention times have been also identified. The major component is trans-cinnamaldehyde (79 %) for C. aromaticum; limonene for C. limon (71 %) and diallyl tri- and disulfide (79 %) for A. sativum. Even if concentration and protocol adaptations are required for successful in vivo treatments, it appears that these oils may be useful as chemotherapeutic agents against several poultry parasites.

Published
2003
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10. DeCoSTAR: Reconstructing the ancestral organization of genes or genomes using reconciled phylogenies

Author

Duchemin, W, Anselmetti, Y, Patterson, M, Ponty, Y, Bérard, S, Chauve, C, Scornavacca, C, Daubin, V, Tannier, E, Duchemin, Wandrille, Anselmetti, Yoann, Patterson, Murray, Ponty, Yann, Bérard, Sèverine, Chauve, Cedric, Scornavacca, Celine, Daubin, Vincent, Tannier, Eric, Duchemin, W, Anselmetti, Y, Patterson, M, Ponty, Y, Bérard, S, Chauve, C, Scornavacca, C, Daubin, V, Tannier, E, Duchemin, Wandrille, Anselmetti, Yoann, Patterson, Murray, Ponty, Yann, Bérard, Sèverine, Chauve, Cedric, Scornavacca, Celine, Daubin, Vincent, and Tannier, Eric

Abstract

DeCoSTAR is a software that aims at reconstructing the organization of ancestral genes or genomes in the form of sets of neighborhood relations (adjacencies) between pairs of ancestral genes or gene domains. It can also improve the assembly of fragmented genomes by proposing evolutionary-induced adjacencies between scaffolding fragments. Ancestral genes or domains are deduced from reconciled phylogenetic trees under an evolutionarymodel that considers gains, losses, speciations, duplications, and transfers as possible events for gene evolution. Reconciliations are either given as input or computed with the ecceTERA package, into which DeCoSTAR is integrated. DeCoSTAR computes adjacency evolutionary scenarios using a scoring scheme based on aweighted sum of adjacency gains and breakages. Solutions, both optimal and near-optimal, are sampled according to the Boltzmann-Gibbs distribution centered around parsimonious solutions, and statistical supports on ancestral and extant adjacencies are provided.DeCoSTAR supports the features of previously contributed tools that reconstruct ancestral adjacencies, namely DeCo, DeCoLT, ART-DeCo, and DeClone. In a fewminutes, DeCoSTAR can reconstruct the evolutionary history of domains inside genes, of gene fusion and fission events, or of gene order along chromosomes, for large data sets including dozens of whole genomes from all kingdoms of life. We illustrate the potential of DeCoSTAR with several applications: ancestral reconstruction of gene orders for Anopheles mosquito genomes, multidomain proteins in Drosophila, and gene fusion and fission detection in Actinobacteria.

Published
2017

11. Control methods for Dermanyssus gallinae in systems for laying hens: results of an international seminar

Author

MUL, M., VAN NIEKERK, T., CHIRICO, J., MAURER, V., KILPINEN, O., SPARAGANO, O., THIND, B., ZOONS, J., MOORE, D., BELL, B., GJEVRE, A.-G, CHAUVE, C., MUL, M., VAN NIEKERK, T., CHIRICO, J., MAURER, V., KILPINEN, O., SPARAGANO, O., THIND, B., ZOONS, J., MOORE, D., BELL, B., GJEVRE, A.-G, and CHAUVE, C.

Abstract

This paper reports the results of a seminar on poultry red mite (PRM), Dermanyssus gallinae. Eighteen researchers from eight European countries discussed life cycle issues of the mite, effects of mites on hens and egg production, and monitoring and control methods for PRM in poultry facilities. It was determined that PRM probably causes more damage than envisaged, with the cost in The Netherlands alone reaching 11 million euro per annum. However a great deal is still unknown about PRM (e.g. reproduction, survival methods, etc.) and that PRM monitoring is an important instrument in recognising and admitting the problem and in taking timely measures. Currently, the most promising control method combines heating the hen house in combination with chemical treatments. Future areas of development which show promise include the use of entomopathogenic fungi, vaccination and predatory mites. The final aim is to solve the problem of D. gallinae in housing systems for laying hens

Published
2017

12. An Exact Enumeration of Distance-Hereditary Graphs

Author

Chauve, C��dric, Fusy, ��ric, and Lumbroso, J��r��mie

Subjects
FOS: Computer and information sciences, Discrete Mathematics (cs.DM), FOS: Mathematics, Combinatorics (math.CO), MathematicsofComputing_DISCRETEMATHEMATICS
Abstract

Distance-hereditary graphs form an important class of graphs, from the theoretical point of view, due to the fact that they are the totally decomposable graphs for the split-decomposition. The previous best enumerative result for these graphs is from Nakano et al. (J. Comp. Sci. Tech., 2007), who have proven that the number of distance-hereditary graphs on $n$ vertices is bounded by ${2^{\lceil 3.59n\rceil}}$. In this paper, using classical tools of enumerative combinatorics, we improve on this result by providing an exact enumeration of distance-hereditary graphs, which allows to show that the number of distance-hereditary graphs on $n$ vertices is tightly bounded by ${(7.24975\ldots)^n}$---opening the perspective such graphs could be encoded on $3n$ bits. We also provide the exact enumeration and asymptotics of an important subclass, the 3-leaf power graphs. Our work illustrates the power of revisiting graph decomposition results through the framework of analytic combinatorics., 14 pages, 4 figures, and a Maple worksheet; preprint of long version of IGCT 2014 article presented as "An Enumeration of Distance-Hereditary and 3-Leaf Power Graphs."

Published
2016
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13. Highly evolvable malaria vectors: The genomes of 16 Anopheles mosquitoes

Author

Neafsey, DE, Waterhouse, RM, Abai, MR, Aganezov, SS, Alekseyev, MA, Allen, JE, Amon, J, Arcà, B, Arensburger, P, Artemov, G, Assour, LA, Basseri, H, Berlin, A, Birren, BW, Blandin, SA, Brockman, AI, Burkot, TR, Burt, A, Chan, CS, Chauve, C, Chiu, JC, Christensen, M, Costantini, C, Davidson, VLM, Deligianni, E, Dottorini, T, Dritsou, V, Gabriel, SB, Guelbeogo, WM, Hall, AB, Han, MV, Hlaing, T, Hughes, DST, Jenkins, AM, Jiang, X, Jungreis, I, Kakani, EG, Kamali, M, Kemppainen, P, Kennedy, RC, Kirmitzoglou, IK, Koekemoer, LL, Laban, N, Langridge, N, Lawniczak, MKN, Lirakis, M, Lobo, NF, Lowy, E, MacCallum, RM, Mao, C, Maslen, G, Mbogo, C, McCarthy, J, Michel, K, Mitchell, SN, Moore, W, Murphy, KA, Naumenko, AN, Nolan, T, Novoa, EM, O'Loughlin, S, Oringanje, C, Oshaghi, MA, Pakpour, N, Papathanos, PA, Peery, AN, Povelones, M, Prakash, A, Price, DP, Rajaraman, A, Reimer, LJ, Rinker, DC, Rokas, A, Russell, TL, Sagnon, N, Sharakhova, MV, Shea, T, Simão, FA, Simard, F, Slotman, MA, Somboon, P, Stegniy, V, Struchiner, CJ, and Thomas, GWC

Abstract

© 2015, american association for the advancement of science. All rigths reserved. Variation in vectorial capacity for human malaria among Anopheles mosquito species is determined by many factors, including behavior, immunity, and life history. To investigate the genomic basis of vectorial capacity and explore new avenues for vector control, we sequenced the genomes of 16 anopheline mosquito species from diverse locations spanning ∼100 million years of evolution. Comparative analyses show faster rates of gene gain and loss, elevated gene shuffling on the X chromosome, and more intron losses, relative to Drosophila. Some determinants of vectorial capacity, such as chemosensory genes, do not show elevated turnover but instead diversify through protein-sequence changes. This dynamism of anopheline genes and genomes may contribute to their flexible capacity to take advantage of new ecological niches, including adapting to humans as primary hosts.

Published
2015

14. Mosquito genomics. Highly evolvable malaria vectors: the genomes of 16 Anopheles mosquitoes

Author

Neafsey, D. E., Waterhouse, R. M., Abai, M. R., Aganezov, S. S., Alekseyev, M. A., Allen, J. E., Amon, J., Arca, B., Arensburger, P., Artemov, G., Assour, L. A., Basseri, H., Berlin, A., Birren, B. W., Blandin, S. A., Brockman, A. I., Burkot, T. R., Burt, A., Chan, C. S., Chauve, C., Chiu, J. C., Christensen, M., Costantini, C., Davidson, V. L., Deligianni, E., Dottorini, T., Dritsou, V., Gabriel, S. B., Guelbeogo, W. M., Hall, A. B., Han, M. V., Hlaing, T., Hughes, D. S., Jenkins, A. M., Jiang, X., Jungreis, I., Kakani, E. G., Kamali, M., Kemppainen, P., Kennedy, R. C., Kirmitzoglou, I. K., Koekemoer, L. L., Laban, N., Langridge, N., Lawniczak, M. K., Lirakis, M., Lobo, N. F., Lowy, E., MacCallum, R. M., Mao, C., Maslen, G., Mbogo, C., McCarthy, J., Michel, K., Mitchell, S. N., Moore, W., Murphy, K. A., Naumenko, A. N., Nolan, T., Novoa, E. M., O'Loughlin, S., Oringanje, C., Oshaghi, M. A., Pakpour, N., Papathanos, P. A., Peery, A. N., Povelones, M., Prakash, A., Price, D. P., Rajaraman, A., Reimer, L. J., Rinker, D. C., Rokas, A., Russell, T. L., Sagnon, N., Sharakhova, M. V., Shea, T., Simao, F. A., Simard, F., Slotman, M. A., Somboon, P., Stegniy, V., Struchiner, C. J., Thomas, G. W., Tojo Castro, Marta, Topalis, P., Tubio, J. M., Unger, M. F., Vontas, J., Walton, C., Wilding, C. S., Willis, J. H., Wu, Y. C., Yan, G., Zdobnov, E. M., Zhou, X., Catteruccia, F., Christophides, G. K., Collins, F. H., Cornman, R. S., Crisanti, A., Donnelly, M. J., Emrich, S. J., Fontaine, M. C., Gelbart, W., Hahn, M. W., Hansen, I. A., Howell, P. I., Kafatos, F. C., Kellis, M., Lawson, D., Louis, C., Luckhart, S., Muskavitch, M. A., Ribeiro, J. M., Riehle, M. A., Sharakhov, I. V., Tu, Z., Zwiebel, L. J., and Besansky, N. J.

Subjects
EXPRESSION, SEX-CHROMOSOME EVOLUTION, ANTENNAL TRANSCRIPTOME PROFILES, Base Sequence, R CONSENSUS, Genome, Insect, Molecular Sequence Data, GAMBIAE, CUTICULAR PROTEIN GENES, AEDES-AEGYPTI, DROSOPHILA, ANNOTATION, FAMILY, Malari, Chromosomes, Insect, Insect Vectors, Evolution, Molecular, Anopheles, Animals, Humans, Drosophila, Sequence Alignment, Phylogeny
Abstract

Variation in vectorial capacity for human malaria among Anopheles mosquito species is determined by many factors, including behavior, immunity, and life history. To investigate the genomic basis of vectorial capacity and explore new avenues for vector control, we sequenced the genomes of 16 anopheline mosquito species from diverse locations spanning ~100 million years of evolution. Comparative analyses show faster rates of gene gain and loss, elevated gene shuffling on the X chromosome, and more intron losses, relative to Drosophila. Some determinants of vectorial capacity, such as chemosensory genes, do not show elevated turnover but instead diversify through protein-sequence changes. This dynamism of anopheline genes and genomes may contribute to their flexible capacity to take advantage of new ecological niches, including adapting to humans as primary hosts.

Published
2015

15. Separation of Cellulose Nanocrystals

Author

Chauve, C., Fraschini, C., Jean, B., Carret, Michèle, inconnu, Inconnu, Centre de Recherches sur les Macromolécules Végétales (CERMAV), and Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)

Subjects
02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 0210 nano-technology, 01 natural sciences, 0104 chemical sciences
Published
2014

16. Linearization of ancestral multichromosomal genomes

Author

Manuch, J., Patterson, Murray, Wittler, R., Chauve, C., Tannier, E., Hurink, Johann, and Manthey, B.

Subjects
computational complexity, graph matching algorithms, ancestral genome reconstruction
Published
2013

17. Monitoring of \textitDermanyssus gallinae in free-range poultry farms

Author

Zenner, Lionel, Bon, G., Chauve, C., Nemoz, C., Lubac, S., Génétique et évolution des interactions hôtes-parasites, Département génétique, interactions et évolution des génomes [LBBE] (GINSENG), Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), and Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV]Life Sciences [q-bio]
Published
2009

18. Prédiction de synténies dans le génome ancestral des amniotes

Author

Boyer, F., Chauve, C., Tannier, Eric, Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Bioinformatique, phylogénie et génomique évolutive (BPGE), Département PEGASE [LBBE] (PEGASE), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), and Jacques van Helden, Yves Moreau

Subjects
[SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT]
Published
2008

19. Benchmarking RNA secondary structure comparison algorithms

Author

Allali, J., D'Aubenton-Carafa, Y., Chauve, C., Denise, A., Drevet, C., Ferraro, P., Gautheret, D., Herrbach, C., Leclerc F, F., De Monte, A., Ouangraoua, A., Sagot, M.-F., Saule, C., Termier, M., Thermes C, C., Touzet, H., Centre de génétique moléculaire (CGM), Centre National de la Recherche Scientifique (CNRS), Institut de génétique et microbiologie [Orsay] (IGM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier de Montreal, Hôtel-Dieu-Université de Montréal (UdeM)-Centre Hospitalier de l'Université de Montréal (CHUM), Université de Montréal (UdeM), Laboratoire Bordelais de Recherche en Informatique (LaBRI), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB), SFU Discrete Mathematics Group (SFU-DMG), Simon Fraser University (SFU.ca), Laboratoire de Recherche en Informatique (LRI), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Pacific Institute for the Mathematical Sciences (PIMS), University of Calgary, Technologies avancées pour le génôme et la clinique (TAGC), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Maturation des ARN et enzymologie moléculaire (MAEM), Cancéropôle du Grand Est-Université Henri Poincaré - Nancy 1 (UHP)-IFR111-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Informatique Fondamentale de Lille (LIFL), Université de Lille, Sciences et Technologies-Institut National de Recherche en Informatique et en Automatique (Inria)-Université de Lille, Sciences Humaines et Sociales-Centre National de la Recherche Scientifique (CNRS), Computer science and genomics (HELIX), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Sequential Learning (SEQUOIA), Université de Lille, Sciences et Technologies-Institut National de Recherche en Informatique et en Automatique (Inria)-Université de Lille, Sciences Humaines et Sociales-Centre National de la Recherche Scientifique (CNRS)-Université de Lille, Sciences et Technologies-Institut National de Recherche en Informatique et en Automatique (Inria)-Université de Lille, Sciences Humaines et Sociales-Centre National de la Recherche Scientifique (CNRS)-Inria Lille - Nord Europe, Institut National de Recherche en Informatique et en Automatique (Inria), ANR-06-BLAN-0045,BRASERO,Biologically Relevant Algorithms and Softwares for Efficient RNA Structure Comparison(2006), Université de Bordeaux (UB)-École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB)-Centre National de la Recherche Scientifique (CNRS), University of Calgary-Centre National de la Recherche Scientifique (CNRS), and Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, [INFO.INFO-BI]Computer Science [cs]/Bioinformatics [q-bio.QM], [SDV.BIBS]Life Sciences [q-bio]/Quantitative Methods [q-bio.QM]
Abstract

International audience; In the last ten years, several tools have been proposed for RNA secondary structure pairwise comparison. These tools use different models (ordered tree or forest, arc annotated sequence, multi-level tree) and methods (edit distance, alignment). We present a first benchmark for comparing these tools. For various RNA families, we built two sets of secondary structures. The first, called the reference set, is composed of a small number of RNAs with their known structures. The second is composed of sequences folded using Mfold and RNAshapes. Some of these sequences correspond to structural RNAs of the same families (true events), other correspond to noise. We studied the ability of each tool to find the true events using the reference set. In particular we analysed the results in terms of sensibility/specificity, distribution and spread of the scores, and computation time.

Published
2008

20. Experimental infection of Salmonella Enteritidis by the poultry red mite Dermanyssus gallinae

Author

Valiente Moro, C., Chauve, C., Zenner, L., Génétique et évolution des interactions hôtes-parasites, Département génétique, interactions et évolution des génomes [LBBE] (GINSENG), Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), and Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT]
Published
2007

21. Incidence of histomonosis in Turkeys in france since the bas of dimetridazole and nifursol

Author

Callait-Cardinal, M-P., Leroux, S., Venereau, E., Chauve, C., Le Pottier, G., Zenner, Lionel, Génétique et évolution des interactions hôtes-parasites, Département génétique, interactions et évolution des génomes [LBBE] (GINSENG), Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), and Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV]Life Sciences [q-bio]
Published
2007

22. La sarcosporidiose bovine

Author

Zenner, L., Callait-Cardinal, Marie-Pierre, Chauve, C., Génétique et évolution des interactions hôtes-parasites, Département génétique, interactions et évolution des génomes [LBBE] (GINSENG), Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), ProdInra, Migration, Protozaires entéricoles des volailles, Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Lyon (ENVL), Ecole Nationale Vétérinaire de Lyon (ENVL), and Ecole Nationale Vétérinaire de Lyon (ENVL)-Institut National de la Recherche Agronomique (INRA)

Subjects
PARASITOLOGIE, [SDV] Life Sciences [q-bio], [SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT], [SDV]Life Sciences [q-bio], SARCOSPORIDIOSE
Abstract

National audience; Trois espèces de protozoaires, coccidies dixènes, sarcotis bovicanis, S. bovifelis et S. Bovihominis sont responsables de la sarcosporidiose chez les bovins, hôtes intermédiaires. Les hôtes définitif sont, respectivement, le chat, le chien et l’Homme. Ce dernier donne à cette affection une importance non négligeable en santé publique. Les signes cliniques chez les bovins, rarement présents, sont toujours peu évocateurs : syndrome fébrile intermittent, avec anémie dans la forme aigüe ou myosite dans la forme chronique. Le diagnostic de routine est toujours difficile et passe par la mise en œuvre d’analyses histologiques, sérologiques ou de biologie moléculaires. Les moyens de prophylaxie collective sont, en pratique, quasi inexistants. Seule la prophylaxie individuelle, avec la cuisson à cœur et/ou la congélation permettent d’éviter la maladie chez l’Homme de façon certaine.

Published
2005

23. Histomonose : les travaux conduits à l'ENV de Lyon

Author

Sylvain, D., Chauve, C., Zenner, L., ProdInra, Migration, Protozaires entéricoles des volailles, Ecole Nationale Vétérinaire de Lyon (ENVL)-Institut National de la Recherche Agronomique (INRA), Ecole Nationale Vétérinaire de Lyon (ENVL), Génétique et évolution des interactions hôtes-parasites, Département génétique, interactions et évolution des génomes [LBBE] (GINSENG), Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), and Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV] Life Sciences [q-bio], [SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT], HISTOMONOSE, [SDV]Life Sciences [q-bio], HISTOMONAS MELEAGRIDIS
Published
2004

24. Linearization of ancestral multichromosomal genomes

Author

Hurink, J., Manthey, B., Manuch, J., Patterson, M.D. (Murray), Wittler, R., Chauve, C., Tannier, E., Hurink, J., Manthey, B., Manuch, J., Patterson, M.D. (Murray), Wittler, R., Chauve, C., and Tannier, E.

Published
2013

25. Hypergraph covering problems motivated by genome assembly questions

Author

Chauve, C., Patterson, M.D. (Murray), Rajaraman, A., Chauve, C., Patterson, M.D. (Murray), and Rajaraman, A.

Abstract

We describe some genome assembly problems as a general problem of covering a hypergraph by linear and circular walks, where vertices represent sequence elements, repeated sequences are modelled by assigning a multiplicity to vertices, and edges represent co-localization information. We show that deciding if a given assembly hypergraph ad- mits an assembly is fixed-parameter tractable, and we provide two exact polynomial time algorithms for clearing ambiguities caused by repeats.

Published
2013
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26. Linearization of ancestral multichromosomal genomes

Author

Hurink, J.L. (Johann), Manthey, B., Manuch, J., Patterson, M.D. (Murray), Wittler, R., Chauve, C., Tannier, E., Hurink, J.L. (Johann), Manthey, B., Manuch, J., Patterson, M.D. (Murray), Wittler, R., Chauve, C., and Tannier, E.

Published
2013

27. L'histomonose de la dinde une maladie d'actualité ?

Author

Zenner, L., Chaussat, L., Chauve, C., Génétique et évolution des interactions hôtes-parasites, Département génétique, interactions et évolution des génomes [LBBE] (GINSENG), Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), and Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT]
Published
2002

28. Linearization of ancestral multichromosomal genomes

Author

Maňuch, J, Patterson, M, Wittler, R, Chauve, C, Tannier, E, Tannier, E., PATTERSON, MURRAY DAN, Maňuch, J, Patterson, M, Wittler, R, Chauve, C, Tannier, E, Tannier, E., and PATTERSON, MURRAY DAN

Abstract

Background: Recovering the structure of ancestral genomes can be formalized in terms of properties of binary matrices such as the Consecutive-Ones Property (C1P). The Linearization Problem asks to extract, from a given binary matrix, a maximum weight subset of rows that satisfies such a property. This problem is in general intractable, and in particular if the ancestral genome is expected to contain only linear chromosomes or a unique circular chromosome. In the present work, we consider a relaxation of this problem, which allows ancestral genomes that can contain several chromosomes, each either linear or circular. Result: We show that, when restricted to binary matrices of degree two, which correspond to adjacencies, the genomic characters used in most ancestral genome reconstruction methods, this relaxed version of the Linearization Problem is polynomially solvable using a reduction to a matching problem. This result holds in the more general case where columns have bounded multiplicity, which models possibly duplicated ancestral genes. We also prove that for matrices with rows of degrees 2 and 3, without multiplicity and without weights on the rows, the problem is NP-complete, thus tracing sharp tractability boundaries. Conclusion: As it happened for the breakpoint median problem, also used in ancestral genome reconstruction, relaxing the definition of a genome turns an intractable problem into a tractable one. The relaxation is adapted to some biological contexts, such as bacterial genomes with several replicons, possibly partially assembled. Algorithms can also be used as heuristics for hard variants. More generally, this work opens a way to better understand linearization results for ancestral genome structure inference.

Published
2012

29. Tractability results for the consecutive-ones property with multiplicity

Author

Chauve, C, Maňuch, J, Patterson, M, Wittler, R, Chauve, Cedric, Maňuch, Ján, Patterson, Murray, Wittler, Roland, Chauve, C, Maňuch, J, Patterson, M, Wittler, R, Chauve, Cedric, Maňuch, Ján, Patterson, Murray, and Wittler, Roland

Abstract

A binary matrix has the Consecutive-Ones Property (C1P) if its columns can be ordered in such a way that all 1's in each row are consecutive. We consider here a variant of the C1P where columns can appear multiple times in the ordering. Although the general problem of deciding the C1P with multiplicity is NP-complete, we present here a case of interest in comparative genomics that is tractable. © 2011 Springer-Verlag

Published
2011

30. Control methods for Dermanyssus gallinae in systems for laying hens: results of an international seminar

Author

Mul, M.F., van Niekerk, Thea, Chirico, J., Maurer, Veronika, Kilpinen, O., Sparagano, O., Thind, B., Zoons, J., Moore, D., Bell, B., Gjevre, A.-G., Chauve, C., Mul, M.F., van Niekerk, Thea, Chirico, J., Maurer, Veronika, Kilpinen, O., Sparagano, O., Thind, B., Zoons, J., Moore, D., Bell, B., Gjevre, A.-G., and Chauve, C.

Abstract

This paper reports the results of a seminar on poultry red mite (PRM), Dermanyssus gallinae. Eighteen researchers from eight European countries discussed life cycle issues of the mite, effects of mites on hens and egg production, and monitoring and control methods for PRM in poultry facilities. It was determined that PRM probably causes more damage than envisaged, with the cost in The Netherlands alone reaching 11 million euro per annum. However a great deal is still unknown about PRM (e.g. reproduction, survival methods, etc.) and that PRM monitoring is an important instrument in recognising and admitting the problem and in taking timely measures. Currently, the most promising control method combines heating the hen house in combination with chemical treatments. Future areas of development which show promise include the use of entomopathogenic fungi, vaccination and predatory mites. The final aim is to solve the problem of D. gallinae in housing systems for laying hens.

Published
2009

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