Influence of low doses of gamma irradiation on cowpea beetle <i>Callosobruchus maculatus</i> (F.) (Coleoptera: Chrysomelidae)

Poster

Autor/innen

  • Shams Fawki Entomology Department, Faculty of Science, Ain Shams University, Abbasiya 11566, Cairo, Egypt
  • Hatem A. M. Ibrahim Entomology Department, Faculty of Science, Ain Shams University, Abbasiya 11566, Cairo, Egypt
  • Marah M. Abd El-Bar Entomology Department, Faculty of Science, Ain Shams University, Abbasiya 11566, Cairo, Egypt
  • Mohamed A. Abdou Entomology Department, Faculty of Science, Ain Shams University, Abbasiya 11566, Cairo, Egypt
  • Dalia M. Mahmoud Entomology Department, Faculty of Science, Ain Shams University, Abbasiya 11566, Cairo, Egypt
  • El-Gohary E. El-Gohary Entomology Department, Faculty of Science, Ain Shams University, Abbasiya 11566, Cairo, Egypt

DOI:

https://doi.org/10.5073/jka.2018.463.106

Schlagworte:

inherited sterility, gamma radiation, low-dose effect, sterile male technique, sterile insect technique, hormesis

Abstract

Phytosanitary irradiation for food commodities has been widely accepted in recent years. Gamma irradiation has been used as a phytosanitary treatment against microbial diseases, insect infestation and food spoilage. The goal of the current study was to determine the lowest possible dose of gamma irradiation that will induce longterm sterility of insects through generations. The effect of four gamma irradiation doses examined were; 20,40, 50 and 70 Gy. Irradiated males were crossed with normal females. For the cowpea beetle Callosobruchus maculatus(F.), adult fecundity, hatchability, adult emergence, sterility% was investigated. 100% adult mortality was achieved by 70 Gy dose. Fecundity, hatchability, number of adults emerged, sterility% were significantly reduced when males exposed to 20, 40, and 50 Gy compared to the control. The effect of parental irradiated males exposed to 20 Gy on F2 generation was also studied. Fecundity, hatchability, number of adult emerged, sterility% were significantly reduced in F2 compared to F1 and control progeny. Interestingly, for F1 generation, the effect of gamma rays on adult emergence% exhibit a hermetic effect response although it was not significant. These results demonstrat that pulse irradiation relying on low-doses of gamma radiation induce inherited semi-sterility through generations and is a very promising phytosanitary food technology for postharvest treatments.

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Veröffentlicht

2018-10-25

Ausgabe

Nr. 463 (2018): Proceedings of the 12th International Working Conference on Stored Product Protection (IWCSPP) in Berlin, Germany, October 7-11, 2018

Rubrik

Session 5: Physical and Biological Control

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