Abstract
We examined whether Gonatocerus ashmeadi Girault (Hymenoptera: Mymaridae), a quasi-gregarious egg parasitoid of Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae), produces precise sex ratios under a field setting. Under laboratory conditions, previous studies have shown that G. ashmeadi exhibits strongly female-biased sex ratios with low variance in the number of males produced per host. Field-collected G. ashmeadi tend to produce much less female-biased sex ratios with high variance in male numbers. We found significant positive effects of proportion parasitism and host density on sex ratio. Proportion parasitism also had a positive effect on sex ratio variance. The findings of this study are discussed in the context of theoretical predictions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
