Functional Responses of Three Candidate Asian Larval Parasitoids Evaluated for Classical Biological Control of Drosophila suzukii (Diptera: Drosophilidae)
- 7 October 2019
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 113 (1), 73-80
- https://doi.org/10.1093/jee/toz265
Abstract
Drosophila suzukii has become a key invasive pest of soft- and thin-skinned fruit crops in its invaded regions in Europe and Americas, where naturally occurring natural enemies are generally not effective for the suppression of this pest or largely absent such as larval-attacking parasitoids. As a part of systematic evaluations of candidate agents for classical biological control of this invasive pest, we evaluated the functional responses of three Asian-native larval hymenopteran parasitoids, Asobara japonica (Braconidae), Ganaspis brasiliensis, and Leptopilina japonica (both Figitidae) to D. suzukii or Drosophila melanogaster (A. japonica only) larvae. Host larval densities were 5, 10, 15, 20, 25, 30, 35, or 40 larvae per test for A. japonica and 3, 6, 9, 12, 18, 24, 30, 36, or 42 larvae per test for G. brasiliensis or L. japonica. Host larvae were provided in standard artificial diet in tubes for a 24-h exposure to individual female parasitoids under the quarantine conditions (23°C). All three parasitoids showed a linear (type I) functional response to the tested host densities. Host species (for A. japonica only) did not affect the number of hosts parasitized or the functional response. Asobara japonica was more efficient than either figitid in terms of the searching efficiency while L. japonica preformed slightly better than G. brasiliensis under the tested conditions. The results are discussed with respect to the selection of parasitoid species to be released in North America and Europe to suppress D. suzukii.Keywords
This publication has 51 references indexed in Scilit:
- Variation in selection and utilization of host crops in the field and laboratory byDrosophila suzukiiMatsumara (Diptera: Drosophilidae), an invasive frugivorePest Management Science, 2013
- High Hemocyte Load Is Associated with Increased Resistance against Parasitoids in Drosophila suzukii, a Relative of D. melanogasterPLOS ONE, 2012
- Taxonomy and phylogeny of Leptopilina species (Hymenoptera: Cynipoidea: Figitidae) attacking frugivorous drosophilid flies in Japan, with description of three new speciesEntomological Science, 2011
- Egg limitation and the functional response of the parasitoidCampoletis grioti(Hym: Ichneumonidae)Biocontrol Science and Technology, 2007
- Spatial distributions and clutch sizes of Drosophila species ovipositing on cherry fruits of different stagesPopulation Ecology, 2006
- Spatial aggregation across ephemeral resource patches in insect communities: an adaptive response to natural enemies?Oecologia, 2004
- Ratio dependence in the functional response of insect parasitoids: evidence fromTrichogramma minutumforaging for eggs in small host patchesEcological Entomology, 2004
- Variability and Parasitoid Foraging Efficiency: A Case Study of Pea Aphids and Aphidius erviThe American Naturalist, 1999
- Life history evolution inJournal of Evolutionary Biology, 1997
- Some Characteristics of Simple Types of Predation and ParasitismThe Canadian Entomologist, 1959