EFFICIENCY AND REGULATION MECHANISMS OF SUNN PEST POPULATION EURYGASTER INTEGRICEPS PUT. (HET.: SCUTELLERIDAE) BY EGG PARASITOIDS IN VARAMIN

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AMIRMAFI M.; KHARAZI PAKDEL A.; RASOULIAN GH.; SAHRAGARD A.

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Journal: Journal of Entomological Society of Iran Year:2002 | Volume:22 | Issue:1 Page(s): 29-47

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Title

EFFICIENCY AND REGULATION MECHANISMS OF SUNN PEST POPULATION EURYGASTER INTEGRICEPS PUT. (HET.: SCUTELLERIDAE) BY EGG PARASITOIDS IN VARAMIN

Author(s)

AMIRMAFI M. | KHARAZI PAKDEL A. | RASOULIAN GH. | SAHRAGARD A. | Issue Writer Certificate

Keywords

REGULATION OF POPULATIONQ4

EURYGASTER INTEGRICEPSQ2

EGG PARASITOIDSQ4

PARASITISM VARAMINQ3

Abstract

The results of a two year study (1997-1998) on the ecology of EGG PARASITOIDS of the sunn pest (Eurygaster intercepts Put.) in Varamin area, revealed that egg masses of sunn pest are attacked by four parasitoid species, Trissolcus grandis Thomson, T. vassilievi: Mayr, T. semistriatus Nees. and T. basalis Whollaston all belonging to the family Scelionidae (Hym.: Proctotrupoidea). Of these, the most effective and widespread parasitoid appears to be T. grandis. In Varamin, egg laying period of sunn pest starts from late April to May. The seasonal parasitism pattern of T. grandis the T. vassilievi had strong synchrony with the host’s egg population but T. simistriatus occurred only in peak of egg laying period and parasitism of T. basalis did not showed any specific pattern. The overall parasitoids impact on the sunn pest population was 22.3% in 1997 and 23.43% in 1998. EGG PARASITOIDS of sunn pest regulate the host population in a density-dependent manner (Temporal density-dependence is positive and weak but spatial density dependene is positive and strong).

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APA: Copy

AMIRMAFI, M., KHARAZI PAKDEL, A., RASOULIAN, GH., & SAHRAGARD, A.. (2002). EFFICIENCY AND REGULATION MECHANISMS OF SUNN PEST POPULATION EURYGASTER INTEGRICEPS PUT. (HET.: SCUTELLERIDAE) BY EGG PARASITOIDS IN VARAMIN. JOURNAL OF ENTOMOLOGICAL SOCIETY OF IRAN (JESI), 22(1), 29-47. SID. https://sid.ir/paper/47952/en

Vancouver: Copy

AMIRMAFI M., KHARAZI PAKDEL A., RASOULIAN GH., SAHRAGARD A.. EFFICIENCY AND REGULATION MECHANISMS OF SUNN PEST POPULATION EURYGASTER INTEGRICEPS PUT. (HET.: SCUTELLERIDAE) BY EGG PARASITOIDS IN VARAMIN. JOURNAL OF ENTOMOLOGICAL SOCIETY OF IRAN (JESI)[Internet]. 2002;22(1):29-47. Available from: https://sid.ir/paper/47952/en

IEEE: Copy

M. AMIRMAFI, A. KHARAZI PAKDEL, GH. RASOULIAN, and A. SAHRAGARD, “EFFICIENCY AND REGULATION MECHANISMS OF SUNN PEST POPULATION EURYGASTER INTEGRICEPS PUT. (HET.: SCUTELLERIDAE) BY EGG PARASITOIDS IN VARAMIN,” JOURNAL OF ENTOMOLOGICAL SOCIETY OF IRAN (JESI), vol. 22, no. 1, pp. 29–47, 2002, [Online]. Available: https://sid.ir/paper/47952/en

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