Differences in sperm storage and remating propensity between adult females of two morphotypes of the Anastrepha fraterculus (Diptera: Tephritidae) cryptic species complex

The South American fruit fly, Anastrepha fraterculus, is a complex of cryptic species composed of at least seven morphotypes. Some of them, such as the Peruvian and Brazilian 1 morphotypes (which include Argentinean populations), exhibit strong pre-copulatory isolation, yet it is possible to obtain heterotypic crosses when forcing copulation of adults under laboratory conditions. The cross involving Peruvian males and Argentinean females produces F1 offspring with reduced viability in terms of egg hatch. This low hatchability could be caused by a reduced amount of sperm transferred to and stored by females mated with heterotypic males, which in turn could affect their post-copulatory behaviour. To test these hypotheses, we investigated sperm transfer and female mating and remating behaviour for homotypic and heterotypic crosses between adults of two morphotypes (Brazilian 1 [Argentina] and Peruvian [Peru]) of the A. fraterculus cryptic species complex. As reported before, Argentinean males and females mated earlier in the day than the other three mating combinations. Peruvian females engaged in shorter copulation times than Argentinean females. Peruvian females tended to store smaller quantities of sperm than Argentinean females, and almost a half of the crosses involving Argentinean males and Peruvian females were unsuccessful (no sperm transfer). However, there was no evidence that the cross between Peruvian males and Argentinean females resulted in storage of a critically small amount of sperm (posing risk of sperm shortage). Argentinean females were more willing to remate than Peruvian females, irrespective of male morphotype, but latency to remating was not affected by male or female morphotype. This study shows that mating behaviour differs between some of the A. fraterculus complex morphotypes, with female but not male morphotype determining female likelihood to remate.

Bibliographic Details

Main Authors:	Abraham, Solana, Rull Gabayet, Juan Antonio, Mendoza, Mariana, Liendo, María Clara, Devescovi, Francisco, Roriz, Alzira K.P., Kovaleski, Adalesio, Segura, Diego Fernando, Vera, María Teresa
Format:	info:ar-repo/semantics/artículo biblioteca
Language:	eng
Published:	Cambridge University Press 2014-06
Subjects:	Isolation Techniques, Behaviour, Females, Técnicas de Aislamiento, Comportamiento, Tephritidae, Hembra, Anastrepha fraterculus, Sperm Storage, Almacenamiento de Esperma,
Online Access:	http://hdl.handle.net/20.500.12123/8711 https://www.cambridge.org/core/journals/bulletin-of-entomological-research/article/abs/differences-in-sperm-storage-and-remating-propensity-between-adult-females-of-two-morphotypes-of-the-anastrepha-fraterculus-diptera-tephritidae-cryptic-species-complex/B11C75C23BFAC1E384FCFE6B1E56DF1A https://doi.org/10.1017/S0007485314000200
Tags:	Add Tag No Tags, Be the first to tag this record!