Parasitic capacity of Trissolcus halyomorphae and T.flavipes (Hymenoptera : Scelionidae) on eggs of Halyomorpha halys
The brown marmorated stink bug, Halyomorpha halys (St(a)l) (Hemiptera : Pentatomidae) has a very broad host range and is a serious pest in fruit and vegetable production.In order to develop a biological control method to control this pest sustainably, we surveyed the parasitoids of H.halys by collecting its egg masses in the field at regular intervals.The results showed that the total parasitism of eggs is 56.29％, within, Trissolcus halyomorphae account for 77.66％, it is really a predominant parasitoid, and followed by T.flavipes, the parasitism is 20.44％.These two species were further studied by Y tube olfactometer to examine their olfactory responses to host eggs.Both parasitoids showed significant attraction responses to egg masses of H.halys.In addition, the parasitisms were tested in the laboratory by providing egg masses of H.halys to T.halyomorphae and T.flavipes alone or simultaneously.Results showed that the parasitism is 94.06％ and 84.21％ for T.halyomorphae and T.flavipes, respectively, there is no significant difference between them.The parasitism is 91.65％ when mix two species, there is no significant difference with any one species alone, within, T.halyomorphae account for 58.95％, T.flavipes account for 41.05％, there is no significant difference between them.
Trissolcus halyomorphaeTrissolcus flavipesHalyomorpha halysegg parasitoidbiological control
NETL
NSTL
万方数据
维普
