Biological study of Sarcophila meridionalis (Dip.:Sarcophagidae), parasitoid of Bradyporus latipes (Orth.: Tettigonidae) in Chaharmahal and Bakhtiary Province

Document Type : Research Paper

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Abstract

Life cycle and evaluation of Sarcophila meridionalis, a parasitoid of Braryporus latipes was investigated in Dotu region of Shahrekord during 2003-2004. In the beginning of growing season, samplings were carried out weekly of the different stages of parasitoid host. The specimens were dissected in laboratory and larval instars and longevity, pupal period, adult emerging period, sex ratio, mating procedure, egg incubation period, parasitism percent, and number of generation per year and hibernation of the parasitoid were determined. The larvae didn’t form head capsule, therefore identification of different stages of larvae were conducted by examining larval color and larval length. The result indicated that the life history of the fly includes three larval stages, as well as pupal, adult and egg stages. In laboratory condition, the longevity were 4-5, 6-8, 5-7 days for three larval stages, 9-11 days for the pupae, 15-20 days for adult male and 17-22 days for adult female stage. The fly had one generation in a year and activity period in field and laboratory study were 49-80 and 56-73 days respectively. The parasitoid hibernates as third larval stage in soil. The egg incubation period was 3.5 days. The parasitism rate was 22.7%.The sex ratio (male/female) was 2.5. The highest longevity occurred in larval stage, in this period larvae is active in head, thorax and abdomen of the host grasshopper. Meanwhile, number of larvae active whithin a grasshopper body were counted as well. The third larva leaves grasshopper body by making a hole. The host was dead at this time.
 

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References

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Iranian Journal of Forest and Range Protection Research
Volume 5, Issue 2 - Serial Number 10
December 2008
Pages 160-174

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History

  • Receive Date: 17 July 2007
  • Revise Date: 06 June 2016
  • Accept Date: 25 December 2007

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