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Activity of digestive enzymes in Zonocerus variegatus (Orthoptera: Pyrgomorphidae) gut homogenates during post-embryonic development

Published online by Cambridge University Press:  30 March 2011

K.O. Ademolu  and
A.B. Idowu
K.O. Ademolu*
Affiliation:
Biological Sciences Department, University of Agriculture, P.M.B. 2240, Abeokuta, Ogun State, Nigeria
A.B. Idowu
Affiliation:
Biological Sciences Department, University of Agriculture, P.M.B. 2240, Abeokuta, Ogun State, Nigeria
*
*E-mail: [email protected]
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Abstract

The activity of five enzymes – amylase, α-glucosidase, cellulase, proteinase and lipase – present in the foregut, midgut and hindgut of the African variegated grasshopper Zonocerus variegatus (L.) was studied in the post-embryonic stages of the insect. The activities of all the enzymes increased with age of the insect, with the adult stage having significantly higher (P < 0.05) activity than the lower instars. The midgut had the highest activity for all the enzymes except for amylase. Proteinase activity was the highest, and cellulase the lowest in the gut regions. These findings indicate that the adult stage of the polyphagous insect has higher digestive capacity than the immature stages.

Keywords

Zonocerus variegatusdigestiongut enzymesdevelopment
Type
Research Paper
Information
International Journal of Tropical Insect Science , Volume 31 , Issue 1-2 , June 2011 , pp. 29 - 33
Copyright
Copyright © ICIPE 2011

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