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Female adult puncture-induced plant volatiles promote mating success of the pea leafminer via enhancing vibrational signals.

ABSTRACT: Herbivore-induced plant volatiles (HIPVs) synergize with the sex pheromones of herbivorous insects to facilitate mate location. However, the synergism of HIPVs and acoustic signals for sexual communication remains unknown. Here, we investigated the synergy between HIPVs and vibrational duets for sexual communication and mating in the pea leafminer ( Liriomyza huidobrensis). Our results indicated that adult leafminers do not produce species-specific pheromone, and female-puncture-induced plant volatiles facilitate the attraction of both sexes to host plant leaves and sexual encounters. Insect-derived cues do not participate in mate locations. Both sexes do not produce qualitatively different cuticular hydrocarbons (CHCs), and CHCs from females cannot elicit the antennal and behavioural responses of males. By contrast, induced green leaf volatiles, terpenoids and oximes elicit dramatic antennal responses in both sexes. Electrophysiological and behavioural tests consistently showed that the volatiles (Z)-3-hexenol and (Z)-3-hexenyl-acetate elicited the most intense gas chromatographic-electroantennographic responses, and attracted males and females. Remarkably, these volatiles significantly promoted the occurrence of vibrational duets between the sexes, thereby increasing the mating success of leafminers. Therefore, the synergism of HIPVs and vibrational signals largely promoted the mating success of leafminers, suggesting an alternative control strategy through precision trapping for non-pheromone-producing insects. This article is part of the theme issue 'Biotic signalling sheds light on smart pest management'.

SUBMITTER: Ge J

PROVIDER: S-EPMC6367149 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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Female adult puncture-induced plant volatiles promote mating success of the pea leafminer via enhancing vibrational signals.

Ge Jin J Li Na N Yang Junnan J Wei Jianing J Kang Le L

Philosophical transactions of the Royal Society of London. Series B, Biological sciences 20190301 1767

Herbivore-induced plant volatiles (HIPVs) synergize with the sex pheromones of herbivorous insects to facilitate mate location. However, the synergism of HIPVs and acoustic signals for sexual communication remains unknown. Here, we investigated the synergy between HIPVs and vibrational duets for sexual communication and mating in the pea leafminer ( Liriomyza huidobrensis). Our results indicated that adult leafminers do not produce species-specific pheromone, and female-puncture-induced plant vo ...[more]

PMID: 30967018

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Project description:Competition over access to resources early in life can influence development, and, in turn, affect competitive phenotypes in reproductive adults. Theory predicts that competition between adult females should be especially context-dependent, because of constraints imposed by high costs of reproduction. However, the potential impact of developmental environments on competition in adult females remains little understood.In Drosophila melanogaster, the developmental environment can strongly influence adult condition, and prime adult competitive behaviour. In this species, female-female aggression is dependent on reproductive state and increases after mating due to the receipt of sperm and seminal fluid components. However, the effects of the developmental environment on adult female aggression, and any potential interactions with mating status, are unknown.To address this problem, we first raised flies at low and high larval density, which altered competition over limited resources, produced large and small adult females, respectively, and potentially primed them for differing levels of adult competition. We then fought the resulting adult females, either as virgins, or after receiving aggression-stimulating ejaculates at mating, to test for interacting effects.We found, as expected, that mating elevated contest duration. However, this mating-induced boost in aggression was strongly exacerbated for high density (small) females. Low density (large) females won more contests overall, but were not more successful in fights after mating. In contrast, mating increased the fighting success in females raised in high density environments.Our results suggest that individuals who experience competitive, resource-limited, rearing conditions are more sensitive to the aggression-stimulating effects of the male ejaculate. This finding highlights the importance of the developmental environment in mediating adult social interactions and provides support for the theory that female-female aggression should be highly context-dependent. A http://onlinelibrary.wiley.com/doi/10.1111/1365-2435.13214/suppinfo is available for this article.

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Female adult puncture-induced plant volatiles promote mating success of the pea leafminer via enhancing vibrational signals.

Publications

Female adult puncture-induced plant volatiles promote mating success of the pea leafminer via enhancing vibrational signals.

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