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Egg maturation dynamics of the parasitoid Microplitis rufiventris | 1224
Entomology, Ornithology & Herpetology: Current Research

Entomology, Ornithology & Herpetology: Current Research
Open Access

ISSN: 2161-0983

+44 1478 350008

Egg maturation dynamics of the parasitoid Microplitis rufiventris: starvation speeds maturation in early life


International Symposia on Entomology

September 04, 2013 Holiday Inn Orlando International Airport, Orlando, FL, USA

Esmat Hegazi, Wedad Khafagi and Fredrik Schlyter

Accepted Abstracts: Entomol Ornithol Herpetol

Abstract :

The number of mature eggs carried by a female parasitoid at any given moment (egg load) is a fitness-related parameter affecting reproductive potential and impacting upon host population dynamics. Microplitis rufiventris Kok. (Hymenoptera: Braconidae) is a solitary koinobiont endoparasitoid wasp of several noctuid pests including Spodoptera littoralis . The number of mature eggs carried by females at emergence is ≈ 50.Egg maturation rate is strongly affected both by feeding status and access to host larvae. In early adult life, egg maturation rates are lower for 6 - 72 h in fed wasps compared to food deprived (most effect sizes, d, around). When given access to hosts, honey-fed wasps live ≈ 9 days with high lifetime fecundity (226). The total realised fecundity is positively affected by feeding status, where water fed and starved females have140 and 107 eggs (d >1), respectively. Egg resorption is most pronounced in the later life of the female. The results suggest, in addition to confirming the effect of honey-feeding on total fecundity, that fecundity of starved wasps includes rapid egg maturation early in life, which potentially improves biocontrol under inundative release.

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