Entomologia Experimentalis et Applicata (2000) 97, 11-20
Hajimu Takada and Eri Tada (2000)
A comparison between two strains from Japan and Europe of Aphidius ervi
Entomologia Experimentalis et Applicata 97 (1), 11-20
Abstract: A European strain of Aphidius ervi shall be introduced into Japan for the control of Macrosiphum euphorbiae on greenhouse tomatoes. We compared this strain, which is originating from The Netherlands (EVP), with a native strain from Hokkaido, Northern Japan (SPR) in several characteristics. The percentage of parasitism of SPR and EVP was significantly different, when attacking three aphid species: 13% and 30% on M. euphorbiae on tomato, 68% and 93% on Acyrthosiphon pisum on broad bean and 10% and 42% on Aulacorthum solani on sweet pepper, respectively. SPR and EVP differed morphologically (in the colouration of the petiole) and in the esterase banding patterns. Furthermore, cross mating experiments showed that SPR and EVP are partially reproductively isolated from each other. Complete reproductive isolation is evident in the one direction cross (EVP females and SPR males).
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Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
new introduction of pest
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
