Reproductive-life table studies on Trissolcus djadetshkoe (Hym. Scelionidae)

Trissolcus djadetshkoe (Hym.: Scelionidae) is an inferior egg parasitoid of sunn pest Eurygaster integriceps Puton (Hem.: Scutelleridae) in Iran wheat fields. This is reason that why this species is less considered in biological control as well as research programs. However a parasitoid with a minor effect is not necessarily an unimportant species. Although this species is an eligible mortality factor in many parts of Iran, it is the second abundant species of northwest of Iran. Its efficacy was studied in terms of life history parameters in laboratory (26±1 ºC, 50±10% RH, and 16: 8 h photoperiod). The sex ratio, net replacement rate and intrinsic rate of increase were 0.57±.03, 39.8±2.9 and 0.212±0.004 respectively. Efficacy of this species was compared to other egg parasitoids of the sunn pest.