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Langan, A. Mark; Wheater, C. Philip; Dunleavy, Peter J.

doi:10.1023/a:1011167905126

Cited by 12 publications

(1 citation statement)

References 27 publications

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“…These traits can also be modified by inbreeding [13], and thereby further complicate the effects of inbreeding on plant-herbivore interactions. Plant quality and chemical cues direct the oviposition of adult insects [14][15][16] and they can alter plant apparency or attractiveness to the herbivore and lead to avoidance of egg deposition [17]. Theory predicts that female insects deposit their eggs on a site that maximizes the performance of the offspring [18][19][20], although this does not always hold true in practice [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Preference for outbred host plants and positive effects of inbreeding on egg survival in a specialist herbivore

et al. 2014

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Inbreeding can profoundly affect the interactions of plants with herbivores as well as with the natural enemies of the herbivores. We studied how plant inbreeding affects herbivore oviposition preference, and whether inbreeding of both plants and herbivores alters the probability of predation or parasitism of herbivore eggs. In a laboratory preference test with the specialist herbivore moth Abrostola asclepiadis and inbred and outbred Vincetoxicum hirundinaria plants, we discovered that herbivores preferred to oviposit on outbred plants. A field experiment with inbred and outbred plants that bore inbred or outbred herbivore eggs revealed that the eggs of the outbred herbivores were more likely to be lost by predation, parasitism or plant hypersensitive responses than inbred eggs. This difference did not lead to differences in the realized fecundity as the number of hatched larvae did not differ between inbred and outbred herbivores. Thus, the strength of inbreeding depression in herbivores decreases when their natural enemies are involved. Plant inbreeding did not alter the attraction of natural enemies of the eggs. We conclude that inbreeding can significantly alter the interactions of plants and herbivores at different life-history stages, and that some of these alterations are mediated by the natural enemies of the herbivores.

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