Fine-scale interactions between habitat quality and genetic variation suggest an impact of grazing on the critically endangered Crau Plain grasshopper (Pamphagidae: Prionotropis rhodanica)
| Autor: | Laurent Tatin, Karine Berthier, Sylvain Piry, Sandrine Cros-Arteil, Axel Hochkirch, Réjane Streiff, Antoine Foucart, Marie Pierre Chapuis, Linda Bröder |
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| Přispěvatelé: | Centre de Biologie pour la Gestion des Populations (UMR CBGP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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), Unité de Pathologie Végétale (PV), Institut National de la Recherche Agronomique (INRA), Biologie et Génétique des Interactions Plante-Parasite (UMR BGPI), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Conservatoire d'Espaces Naturels de Provence-Alpes-Côte d'Azur (CEN PACA ), Department of Biogeography (Trier University), Universität Trier, French Institute of the Biodiversity (IFB, programme ‘Biodiversity’), French Ministry of the Territory Management and Environment (MATE, programme ‘Espaces Protégés’), INRA, SPE department, AIP ‘génétique en temps réel’), Chapuis, Marie Pierre, Trier University |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
cartographie spatiale
0106 biological sciences 0301 basic medicine Insecta conservation grazing landscape genetics MAPI NDVI Biodiversité et Ecologie 01 natural sciences Grassland Critically endangered Prionotropis rhodanica lcsh:Zoology Grazing IUCN Red List lcsh:QL1-991 2. Zero hunger education.field_of_study geography.geographical_feature_category Pamphagidae Ecology espèce en danger prairie Vegetation Habitat Acridoidea P01 - Conservation de la nature et ressources foncières Arthropoda Population Biology 010603 evolutionary biology Biodiversity and Ecology 03 medical and health sciences Animalia education Prionotropis structure génétique des populations geography L60 - Taxonomie et géographie animales 15. Life on land crau sauterelle qualité de l'habitat 030104 developmental biology Insect Science Orthoptera Biological dispersal [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
| Zdroj: | Journal of orthoptera research Journal of orthoptera research, BioOne (Orthopterist\'s Society), 2018, 27 (1), pp.61-73. ⟨10.3897/jor.27.15036⟩ Journal of Orthoptera Research Journal of Orthoptera Research 1 (27), 61-73. (2018) Journal of Orthoptera Research 27(1): 61-73 Journal of orthoptera research, 2018, 27 (1), pp.61-73. ⟨10.3897/jor.27.15036⟩ Journal of Orthoptera Research, Vol 27, Iss 1, Pp 61-73 (2018) |
| ISSN: | 1082-6467 |
| Popis: | The Crau Plain grasshopper,PrionotropisrhodanicaUvarov, 1923 (Orthoptera: Pamphagidae: Thrinchinae), is a rare grasshopper species endemic to the Crau Plain, a steppic habitat in France with unique floristic and faunistic communities. During recent decades, the area covered by these steppic grasslands has been highly reduced and fragmented due to the development of irrigation-based agriculture, roads, as well as industrial and military complexes. The restricted distribution, low population density and poor dispersal ability ofP.rhodanica, combined with the destruction of its habitat, has led to the classification of this species as critically endangered in the IUCN Red List of Threatened Species. Decreases in habitat quality due to intensive grazing in the remnant grassland patches constitute an additional threat forP.rhodanicathat can impact population dynamics at a relatively small-scale. In this work, we focused on a small area of about 3 km2occupied by one of the largest subpopulations observed in 2000–2001. We conducted a single-time snapshot intensive survey of grasshopper density and genetic variation at 11 microsatellite markers. We used a recent method, MAPI, to visualize the spatial genetic structure as a continuous surface and to determine, with the simultaneous use of spatial cross-correlograms, whether the normalized difference vegetation index, which informs on the balance between vegetation productivity and grazing intensity, can explain grasshopper population structure at such a fine scale. We found that both population density and gene flow were strongly and positively correlated to habitat quality (higher productivity of grasslands and/or lower sheep grazing). The spatial scales of interaction between these variables were estimated to be highly similar, in the range of 812–880 meters. This result suggests thatP.rhodanicais very sensitive to the quality of the grasslands it inhabits. |
| Databáze: | OpenAIRE |
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