caa a22 4500 397547005 CHVBK 20180308164741.0 cr unu---uuuuu 161202e19960901xx s 000 0 eng 10.1093/aesa/89.5.667 doi (NATIONALLICENCE)oxford-10.1093/aesa/89.5.667 Divergent Host Relationships of Males and Females in the Parasitoid Encarsia porteri (Hymenoptera: Aphelinidae) [Elektronische Daten] [Martha S. Hunter, Mike Rose, Andrew Polaszek] "Heterotrophic” parasitoids have been reported in the aphelinid genus Encarsia. These are species in which females develop as primary internal parasitoids of whitefly and males develop as primary internal parasitoids of lepidopteran eggs. The obligate nature of the host relationships in these aphelinids has been questioned and was investigated in this study. We examined the oviposition of female Encarsia porteri (Mercet) in 3 host types: bollworm eggs (Helicoverpa zea (Boddie)), sweetpotato whitefly nymphs (Bemisia tabaci (Gennadius)), and early pupal wasps (E. porteri). Although males of most Encarsia species develop on wasp pupae as hyperparasitoids, female E. porteri did not generally oviposit in wasp pupae. Whitefly nymphs were parasitized almost exclusively by mated females, whereas both mated and unmated females oviposited in moth eggs. The suitability of the above hosts as well as pupal E. fonnosa were also investigated for the development of male progeny. Males were produced only on moth eggs. Thus, we conclude that the heterotrophic host relationships of E. porteri are indeed obligate. Larval E. porteri are sexually dimorphic. Early instars of male larvae have a sculptured cuticle, bear long spines along the venter, and have horn-like projections on the head capsule. Females, in contrast, are more typically hymenopteriform with weak sclerotization of the head capsule, indistinct segmentation, and a smooth cuticle. Also, although both male and female early instar larvae are enclosed within a membrane, only females are enveloped by an opaque cellular layer within this membrane. © 1996 Entomological Society of America Arthropod Biology nationallicence Bemisia tabaci nationallicence heteronomous nationallicence heterotrophic nationallicence hyperparasitism nationallicence sexual dimorphism nationallicence host relationships nationallicence Hunter Martha S. 1Current address: Department of Entomology, 410 Forbes Hall, University of Arizona, Tuscon, AZ 85721. aut Rose Mike aut Polaszek Andrew International Institute of Entomology (an institute of CAB International), 56 Queen's Gate, London SW7 5JR United Kingdom. aut Annals of the Entomological Society of America Oxford University Press 89/5(1996-09-01), 667-675 0013-8746 89:5<667 1996 89 aesa https://doi.org/10.1093/aesa/89.5.667 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/aesa/89.5.667 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hunter Martha S. 1Current address: Department of Entomology, 410 Forbes Hall, University of Arizona, Tuscon, AZ 85721 aut NATIONALLICENCE 700 1- Rose Mike aut NATIONALLICENCE 700 1- Polaszek Andrew International Institute of Entomology (an institute of CAB International), 56 Queen's Gate, London SW7 5JR United Kingdom aut NATIONALLICENCE 773 0- Annals of the Entomological Society of America Oxford University Press 89/5(1996-09-01), 667-675 0013-8746 89:5<667 1996 89 aesa Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford