RESEARCHES ON THE IMPACT OF SOME PARASITOID SPECIES ON
THE LIMITATION OF THE POPULATIONS OF BIORHIZA PALLIDA
(OLIVIER 1791) ♀♂ AND CYNIPS QUERCUSFOLII (LINNAEUS 1758) ♀♀
(HYMENOPTERA, CYNIPIDAE), (ROMANIA)
VOICU ROXANA ELENA 1, CIORNEI CONSTANTIN 2 1. University
“VasileAlecsandri”, Bacau, Facultyof Biology,
Marasesti Street, no. 157, Bacau, Romania,
e-mail:roxana.voicu@ub.ro
2. Institute of
Forest Research and Bacau,Stefan cel Mare
Street, no. 28, Bacau, Romania,
e-mail:ciorneitinel@yahoo.com
The researches on the impact of parasitoid species on the limitation of the ♀♂ andCynipsquercusfolii (Linnaeus, 1758) ♀♀ (Hymenoptera, Cynipidae) were performed in 2007, 2008. The biological material was collected in three sites: Bucium (Bacau), HanuConachi and Ghidigeni (Galati), on different species of oaks (Quercuspetraea, Quercuspedunculiflora, Quercusrobur). In the galls of Biorhizapallida (Olivier, 1791) ♀♂species we collected 59 parasitoids individuals with 13 identified parasitoid species (Chalcidoidea Superfamily). In the galls of Cynipsquercusfolii (Linnaeus, 1758) ♀♀species we collected 16 parasitoids individuals with 6 identified parasitoid species (Chalcidoidea Superfamily, Ichneumonoidea Superfamily). For the two host gall cynipid species (Biorhizapallida (Olivier, 1791) ♀♂ andCynipsquercusfolii (Linnaeus, 1758) ♀♀), the highest parasitic percentage was registered by parasitoid species that belong to Torymidae family (Chalcidoidea Superfamily).
