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5 results on '"Conservatoire botanique national de Corse"'

1. Environmental factors driving the abundance of Philaenus spumarius in mesomediterranean habitats of Corsica (France)

Author

Marguerite Chartois, Xavier Mesmin, Ileana Quiquerez, Sabrina Borgomano, Pauline Farigoule, Éric Pierre, Jean-Marc Thuillier, Jean-Claude Streito, François Casabianca, Laetitia Hugot, Jean-Pierre Rossi, Jean-Yves Rasplus, Astrid Cruaud, Centre de Biologie pour la Gestion des Populations (UMR CBGP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM), Amélioration Génétique et Adaptation des Plantes méditerranéennes et Tropicales Corse - Antenne Corse (AGAP-Corse), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Conservatoire botanique national de Corse / Office de l’environnement de la Corse, Services déconcentrés d'appui à la recherche Corse (SDAR Corse), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), This work was funded by the Collectivité Territoriale de Corse and the European Union Horizon 2020 research and innovation program under Grant Agreement No. 727987 XF-ACTORS., and European Project: 727987,XF-ACTORS

Subjects
Multidisciplinary, [SDE.ES]Environmental Sciences/Environmental and Society
Abstract

Philaenus spumarius (Ps) is considered the main insect vector of the bacterium Xylella fastidiosa (Xf) in Europe. As such, it is a key actor of the Xf pathosystem on which surveillance and management strategies could be implemented. Although research effort has increased in the past years, the ecological factors shaping Ps abundance and distribution across landscapes are still poorly known in most regions of Europe. We selected 64 plots of 500m2 in Corsican semi-natural habitats in which we sampled nymphs and adults of Ps during three years. While local or surrounding vegetation structure (low or high scrubland) had little effect on Ps abundance, we highlighted a positive relationship between Ps abundance and the density of Cistus monspeliensis in the plots. We also found larger populations of Ps in cooler and moister plots. The pattern of host association highlighted here is unique, which calls for more studies on the ecology of Ps in Europe, to help designing surveillance and management strategy for Xf.

Published
2023

2. La Liste rouge des écosystèmes en France - Les littoraux méditerranéens de France métropolitaine, Vol. 2 : côtes rocheuses, rivages de galets et graviers, Rapport technique

Author

Sauve, Alix, Ichter, Jean, Argagnon, Olivier, Bellan-Santini, Denise, Bioret, Frédéric, Cavallin, Pascal, Cottaz, Cyril, Delaugerre, Michel-Jean, Delbosc, Pauline, Dumoulin, Jérémy, Guyot, Isabelle, Hugot, Laetitia, Laffont-Schwob, Isabelle, Noble, Virgile, Petit, Yohann, Carré, Aurélien, Rossi, Magali, Gigot, Guillaume, Gaudillat, Vincent, Azam, Clémentine, Union Internationale pour la Conservation de la Nature (UICN), Conservatoire Botanique National Méditerranéen de Porquerolles, Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), Université de Bretagne Occidentale - UFR Sciences et Techniques (UBO UFR ST), Université de Brest (UBO), Conservatoire botanique national de Corse, Laboratoire Population-Environnement-Développement (LPED), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU), Patrimoine naturel (PatriNat), Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Office français de la biodiversité (OFB), Union Internationale pour la Conservation de la Nature, and Comité français de l'UICN, OFB & MNHN. Montreuil, France

Subjects
[SDE]Environmental Sciences, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
Published
2022

3. Interaction networks between spittlebugs and vegetation types in and around olive and clementine groves of Corsica; implications for the spread of Xylella fastidiosa

Author

Mesmin, Xavier, Chartois, Marguerite, Borgomano, Sabrina, Rasplus, Jean-Yves, Rossi, Jean-Pierre, Cruaud, Astrid, Centre de Biologie pour la Gestion des Populations (UMR CBGP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM), Amélioration Génétique et Adaptation des Plantes méditerranéennes et Tropicales Corse - Antenne Corse (AGAP-Corse), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Conservatoire botanique national de Corse / Office de l’environnement de la Corse, This work was supported by the Collectivite Territoriale de Corse (France) and the European Union Horizon 2020 research and innovation program [Grant Agreement No. 727987 XF-ACTORS]., and European Project: 727987,XF-ACTORS

Subjects
Meadow spittlebug, Ecology, [SDV]Life Sciences [q-bio], Vector-borne disease, Animal Science and Zoology, Community ecology, Agronomy and Crop Science, Phytopathogen
Abstract

International audience; The bacterium Xylella fastidiosa (Xf) is a major threat to European agriculture and notably to the olive and Citrus industry. It is transmitted by xylem-feeding insects, whose plant-feeding preferences still require investigation in European agroecosystems. Here we studied olive and clementine groves of the oriental plain of Corsica. Insect-vegetation type interaction networks for nymphs and adults of xylem-feeding insects were investigated three times a year during two years in and around crops. Networks were dominated by the Philaenus spumarius - Cistus monspeliensis interaction and were similar for olive and clementine groves, despite differences in plant communities of the ground vegetation and agricultural practices. To a lesser extent, Dittrichia viscosa was also a suitable feeding plant for P. spumarius, the main vector of Xf in Europe. Neophilaenus campestris was associated with grove ground vegetation, whereas Lepyronia coleoptrata and Aphrophora alni exhibited no or weak association with any of the target vegetation types. All species occurred on olive and clementine foliage in similar low abundance. Our results suggest that soil tillage in spring would be less efficient than in Italy to control P. spumarius. Instead, removing C. monspeliensis bushes from the close vicinity of groves could reduce risk of spread of Xf to crops. Finally, conserving D. viscosa in olive groves as a biological control strategy against the olive fruit fly is rather counter-productive as it maintains populations of P. spumarius under susceptible crops. Overall, our study shows that management strategies should be designed in relation to local insect-plant interaction networks that should be investigated in both cultivated areas and their immediate environment.

Published
2022

4. Environmental factors driving the abundance of Philaenus spumarius in mesomediterranean habitats of Corsica (France).

Author

Chartois M, Mesmin X, Quiquerez I, Borgomano S, Farigoule P, Pierre É, Thuillier JM, Streito JC, Casabianca F, Hugot L, Rossi JP, Rasplus JY, and Cruaud A

Subjects
Animals, Plant Diseases microbiology, France, Europe, Hemiptera microbiology, Xylella
Abstract

Philaenus spumarius (Ps) is considered the main insect vector of the bacterium Xylella fastidiosa (Xf) in Europe. As such, it is a key actor of the Xf pathosystem on which surveillance and management strategies could be implemented. Although research effort has increased in the past years, the ecological factors shaping Ps abundance and distribution across landscapes are still poorly known in most regions of Europe. We selected 64 plots of 500m 2 in Corsican semi-natural habitats in which we sampled nymphs and adults of Ps during three years. While local or surrounding vegetation structure (low or high scrubland) had little effect on Ps abundance, we highlighted a positive relationship between Ps abundance and the density of Cistus monspeliensis in the plots. We also found larger populations of Ps in cooler and moister plots. The pattern of host association highlighted here is unique, which calls for more studies on the ecology of Ps in Europe, to help designing surveillance and management strategy for Xf., (© 2023. The Author(s).)

Published
2023
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5. Convergent Morphological Evolution in Silene Sect. Italicae (Caryophyllaceae) in the Mediterranean Basin.

Author

Naciri Y, Toprak Z, Prentice HC, Hugot L, Troia A, Burgarella C, Gradaille JL, and Jeanmonod D

Abstract

Recent divergence can obscure species boundaries among closely related taxa. Silene section Italicae (Caryophyllaceae) has been taxonomically controversial, with about 30 species described. We investigate species delimitation within this section using 500 specimens sequenced for one nuclear and two plastid markers. Despite the use of a small number of genes, the large number of sequenced samples allowed confident delimitation of 50% of the species. The delimitation of other species (e.g., Silene nemoralis , S. nodulosa and S. andryalifolia ) was more challenging. We confirmed that seven of the ten chasmophyte species in the section are not related to each other but are, instead, genetically closer to geographically nearby species belonging to Italicae yet growing in open habitats. Adaptation to chasmophytic habitats therefore appears to have occurred independently, as a result of convergent evolution within the group. Species from the Western Mediterranean Basin showed more conflicting species boundaries than species from the Eastern Mediterranean Basin, where there are fewer but better-delimited species. Significant positive correlations were found between an estimation of the effective population size of the taxa and their extent of occurrence (EOO) or area of occupancy (AOO), and negative but non-significant correlations between the former and the posterior probability (PP) of the corresponding clades. These correlations might suggest a lower impact of incomplete lineage sorting in species with low effective population sizes and small distributional ranges compared with that in species inhabiting large areas. Finally, we confirmed that S. italica and S. nemoralis are distinct species, that S. nemoralis might furthermore include two different species and that S. velutina from Corsica and S. hicesiae from the Lipari Islands are sister species., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Naciri, Toprak, Prentice, Hugot, Troia, Burgarella, Gradaille and Jeanmonod.)

Published
2022
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