Journal
BIOLOGICAL CONTROL
Volume 63, Issue 1, Pages 40-47Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.biocontrol.2012.05.005
Keywords
Enemy release hypothesis; Drosophila suzukii; Host-parasitoid interactions; Leptopilina heterotoma; Asobara tabida
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Funding
- Agence Nationale de la Recherche
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Understanding the ecological factors involved in successful invasions is essential for choosing appropriate management measures. One mechanism recognized as often being essential for invasion success is for the invasive species to be less subject to attack by natural enemies. The spotted-wing drosophila, Drosophila suzukii (Matsumura, 1931) is an Asian pest of fruit crops that has recently appeared simultaneously in North America and Europe (2008). Here we investigate the effectiveness of European parasitoids of Drosophila in parasitizing D. suzukii. Of the five main European parasitoid species, only two pupal parasitoids with wide host ranges develop on D. suzukii. Two specialized larval parasitoids were unable to develop, presumably because of a strong immune response. The third specialized larval parasitoid rarely oviposited in D. suzukii. This confirms that host switching is often difficult for specialist parasitoids. (C) 2012 Elsevier Inc. All rights reserved.
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