'Generalist' Aphid Parasitoids Behave as Specialists at the Agroecosystem Scale

Autor: Yoann Navasse, Anne Le Ralec, Christelle Buchard, Manuel Plantegenest, Stephane A. P. Derocles
Přispěvatelé: Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Université de Rennes (UR)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-INSTITUT AGRO Agrocampus Ouest, 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), ANR-12-AGRO-0006, Agence Nationale de la Recherche, ANR-12-AGRO-0006,PEERLESS,Viabilité d'une gestion écologique renforcée de la santé des plantes dans les paysages agricoles(2012), ANR-12-BS07-0009,SCATE,Addition Conjuguée Asymétrique Sequentielle 1,6/1,4 et piégeages d'énolates: Applications en synthèse de produits naturels(2012), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, 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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut National de la Recherche Agronomique (INRA)-Université de Rennes 1 (UR1), AGROCAMPUS OUEST-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Recherche Agronomique (INRA)
Jazyk: angličtina
Rok vydání: 2019
Předmět:
0106 biological sciences
[SDV.BV.ECO]Life Sciences [q-bio]/Vegetal Biology/domain_sdv.bv.eco
specialist
agroecosystem
host range
Biology
Generalist and specialist species
010603 evolutionary biology
01 natural sciences
Article
Parasitoid
cytochrome c oxidase I
03 medical and health sciences
[SDV.SA.STA]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of agriculture
generalist
maximum likelihood
Aphidiinae
parasitoid
030304 developmental biology
Trophic level
trophic interactions
0303 health sciences
Aphid
Obligate
Host (biology)
Ecology
fungi
food and beverages
15. Life on land
biology.organism_classification
[SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology
aphid
Insect Science
PEST analysis
[SDV.EE.IEO]Life Sciences [q-bio]/Ecology
environment/Symbiosis
Zdroj: Insects
Volume 11
Issue 1
Insects, 2020, 11 (1), pp.6. ⟨10.3390/insects11010006⟩
Insects, MDPI, 2020, 11 (1), pp.6. ⟨10.3390/insects11010006⟩
Insects, MDPI, 2019, 11 (1), pp.6. ⟨10.3390/insects11010006⟩
ISSN: 2075-4450
DOI: 10.3390/insects11010006
Popis: International audience; The degree of trophic specialization of interacting organisms impacts on the structure of ecological networks and has consequences for the regulation of crop pests. However, it remains difficult to assess in the case of parasitoids. Host ranges are often established by listing host records from various years and geographic areas in the literature. Here, we compared the actual hosts exploited at a local farm-scale by aphid parasitoids (Hymenoptera: Aphidiinae), to the available species listed as hosts for each parasitoid species. We sampled aphids and their parasitoids in cultivated and uncultivated areas in an experimental farm from April to November 2014 and thereafter used DNA-based data to determine whether a differentiation in sequences existed. Twenty-nine parasitoid species were found on 47 potential aphid hosts. Our results showed that the great majority of the parasitoid tested used fewer host species than expected according to data published in the literature and parasitized a limited number of hosts even when other potential hosts were available in the environment. Moreover, individuals of the most generalist species differed in their DNA sequences, according to the aphid species and/or the host plant species. At a local scale, only obligate or facultative specialist aphid parasitoids were detected. Local specialization has to be considered when implementing the use of such parasitoids in pest regulation within agroecosystems.
Databáze: OpenAIRE
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