Kivan, MKilic, N2024-06-122024-06-1220041386-61411573-8248https://doi.org/10.1023/B:BICO.0000036436.06260.19https://hdl.handle.net/20.500.14551/19121Trissolcus semistriatus (Hymenoptera: Scelionidae) has a high potential for being an effective biological control agent for the sunn pest, Eurygaster integriceps. This study was conducted to determine the preferences of T. semistriatus in terms of host species and age of various heteropteran host eggs ( E. integriceps, Dolycoris baccarum, Graphosoma lineatum, Eurydema ornatum, Holcostethus vernalis). The results indicated that a small portion of parasitism of E. ornatum eggs was obtained ( 28.5%), although high parasitism rates were found in other host eggs (90.0 - 80.0%). A high percentage of adult emergence was also recorded. When tested for its ability to parasitize host eggs of different ages, T. semistriatus was found to prefer younger hosts: it showed parasitism rates greater than 50% with up to 3 days old E. integriceps and D. baccarum, and with up to 4 days old G. lineatum and H. vernalis. However, the parasitism rates in all the ages of E. ornatum eggs were much lower than for other host species. The developmental times in all host species at different ages was extended with increased host age. It was concluded that G. lineatum and D. baccarum could be used for mass production of egg parasitoids.en10.1023/B:BICO.0000036436.06260.19info:eu-repo/semantics/closedAccessBiological ControlHost PreferenceHost-Age PreferenceParasitismPentatomidSunn PestTrissolcus SemistriatusNezara-ViridulaScelionidaeBasalisEggsHymArticle495553562Q2WOS:0002229950000052-s2.0-4043138056Q2