CONTROL OF EGG FERTILIZATION BY NASONIA VITRIPENNIS (HYMENOPTERA: PTEROMALIDAE) WHEN LAYING ON PARASITIZED HOUSE FLY PUPAE
1973; Cambridge University Press; Volume: 105; Issue: 5 Linguagem: Inglês
10.4039/ent105709-5
ISSN1918-3240
Autores Tópico(s)Diptera species taxonomy and behavior
ResumoAbstract Females of Nasonia vitripennis (Walk.) lay a smaller percentage of fertilized (i.e. female) eggs on house fly, Musca domestica L., pupae previously parasitized by their own species, by Muscidifurax zaraptor K. & L., or by Spalangia cameroni Perk. (Hymenoptera: Pteromalidae) than on unparasitized hosts. They respond to changes in the fly pupae associated with death, and in the case of house flies attacked by N . vitripennis , to "venoms" injected at that time or to changes unrelated to death. By not fertilizing eggs that they lay on attacked hosts, the females also conserve sperm, for immature N . vitripennis on previously-attacked fly pupae are usually killed by parasite larvae already present.
Referência(s)