Chemical Signals Associated With Gender and Sexual Experience Affect Mating and the Attractiveness of the Poultry Pest,Alphitobius diaperinus(Coleoptera: Tenebrionidae)

Author:

Calla-Quispe Erika1,Martel Carlos12,Ibáñez Alfredo J1ORCID

Affiliation:

1. Instituto de Ciencias Ómicas y Biotecnología Aplicada, Pontificia Universidad Católica del Perú , Av. Universitaria, San Miguel, Lima , Peru

2. Trait Diversity and Function, Royal Botanic Gardens, Kew , Richmond , United Kingdom

Abstract

AbstractAlphitobius diaperinus is one of the most significant pests in the poultry industry. Identifying the role of self-produced chemical signals can help control it. Here, we exposed adults to the olfactory signals of other adults of similar and different genders (either males or females) and sexual experiences (i.e., virgin and experienced) to assess their long-range attractiveness and, at short-range, their mating behavior responses (i.e., touching, mounting, and copulation). In olfactometric experiments, our results indicate that adults are attracted to the olfactory signals of other male adults, independently of gender, or sexual condition, indicating the presence of generalized long-range attractive signals, in contrast to female signals, can be both factor-dependent. However, in mating experiments, virgin males developed more robust mating responses (i.e., they mount and copulate longer with females) compared to sexually experienced males, even though they both have similar precopulatory behavioral responses (i.e., time of antennal and leg touching). These results address the importance of short-range chemical signals in eliciting copulation. Furthermore, when virgins of both genders were tested, their mating responses were significantly longer than any other pair combination, indicating that sexual experience also affects mating behavior. Chemical analyses of adult extracts showed that sexual experience, but not gender, is linked to differences in chemical profiles of adults, primarily involved in short-range signaling. These findings provide new insights into the attractiveness and mating responses of A. diaperinus and the role of sexual experience in shaping the behavior and chemical profile of insects that mate multiple times during their lifetime.

Funder

The Max Planck Partner Group

Publisher

Oxford University Press (OUP)

Subject

Insect Science,Ecology,General Medicine

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