NDLI: Impact of the Timing of Male Emergence on Mating Capacity of Males in Trichogramma evanescens Westwood

Content Provider	Springer Nature Link
Author	Doyon, Josée Boivin, Guy
Copyright Year	2006
Abstract	In species with highly structured population, such as Trichogramma spp., mating occurs mostly at emergence on the patch and early emerging males have an advantage, as they are present when the first females emerge. However, early emergence of male could also enable males to mature sexually before the emergence of females or enhance their capacity to induce higher receptivity in females. We measured time of emergence of male and female Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae) from hosts that were parasitized within a 30 min period. We also measured the effect of male age on their capacity to mate, and the ability of inseminated females to produce daughters. To verify if early emerging males induced higher receptivity in females, we observed the females mate choice between males of different ages. Our results indicated that the mean time of emergence between males and females was 29 min for individuals that develop in 9 days and 10 min for individuals that develop in 10 days. The protandry observed in this species could be the result of either a faster development of males or a male first strategy by the ovipositing female. In T. evanescens, protandry does not permit males to mature sexually nor to induce higher receptivity in females. The main advantage of protandry for males thus appears to be early access to females as they emerge.
Starting Page	703
Ending Page	713
Page Count	11
File Format	PDF
ISSN	13866141
Journal	BioControl
Volume Number	51
Issue Number	6
e-ISSN	15738248
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-06-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	egg parasitoids emergence hymenoptera protandric reproduction sexual dimorphism trichogrammatidae Plant Sciences Animal Systematics/Taxonomy/Biogeography Plant Pathology Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Insect Science Agronomy and Crop Science

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