Adaptation of Habrobracon hebetor (Hymenoptera: Braconidae) to Rearing on Ephestia kuehniella (Lepidoptera: Pyralidae) and Helicoverpa armigera (Lepidoptera: Noctuidae)

Journal of Insect Science
Ehsan BorzouiMozhgan Mohammadzadeh-Bidarani

Abstract

Food characteristics strongly regulate digestive enzymatic activity of insects through direct influences on their midgut mechanisms. Insect performance is better on diets that contain nutrients in proportions that fit its digestive enzymes. Little is known about the influences of rearing history on parasitism success of Habrobracon hebetor Say. This research focused on the effect of nutrient regulation on survival, development, and parasitism of H. hebetor. Life history and digestive enzyme activity of fourth-stage larvae of H. hebetor were studied when reared on Ephestia kuehniella Zeller. This parasitoid was then introduced to Helicoverpa armigera (Hübner), and above-mentioned parameters were also studied in the first and fourth generations after transfer. In term of parasitism success, H. hebetor preferred E. kuehniella over He. armigera. When the first and fourth generations of He. armigera-reared H. hebetor were compared, the rearing history affected the life history and enzymatic activity of the parasitoid. A better performance of H. hebetor was achieved after it was reared on He. armigera for the four generations. Because, digestive α-amylase and general protease of the parasitoid were matched with the new host, it used ...Continue Reading

References

Dec 18, 2001·Archives of Insect Biochemistry and Physiology·E N ElpidinaD P Zhuzhikov
May 12, 2005·Journal of Insect Physiology·M A CarrilloW D Hutchison
Jul 19, 2005·Journal of Economic Entomology·Justin E Nay, Thomas M Perring
Sep 20, 2007·Annual Review of Entomology·Mark A JervisJeffrey A Harvey
Feb 15, 2011·Annual Review of Physiology·William H KarasovEnrique Caviedes-Vidal

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