Morphological changes induced in the antenna of cowpea beetle, Callosobruchus maculatus (Fabricius) (Coleoptera : Bruchidae) after treatment with lufenuron
Khalil, M., Abo-zeid, N., Hafez, S., Hamed, R., Hamouda, L. (2009). Morphological changes induced in the antenna of cowpea beetle, Callosobruchus maculatus (Fabricius) (Coleoptera : Bruchidae) after treatment with lufenuron. EKB Journal Management System, 2(1), 207-218. doi: 10.21608/eajbsa.2009.15615
Mohamed W. Khalil; Nadia R. A. Abo-zeid; Soryia E. Hafez; Ragaa K.A. Hamed; Laila S. H Hamouda. "Morphological changes induced in the antenna of cowpea beetle, Callosobruchus maculatus (Fabricius) (Coleoptera : Bruchidae) after treatment with lufenuron". EKB Journal Management System, 2, 1, 2009, 207-218. doi: 10.21608/eajbsa.2009.15615
Khalil, M., Abo-zeid, N., Hafez, S., Hamed, R., Hamouda, L. (2009). 'Morphological changes induced in the antenna of cowpea beetle, Callosobruchus maculatus (Fabricius) (Coleoptera : Bruchidae) after treatment with lufenuron', EKB Journal Management System, 2(1), pp. 207-218. doi: 10.21608/eajbsa.2009.15615
Khalil, M., Abo-zeid, N., Hafez, S., Hamed, R., Hamouda, L. Morphological changes induced in the antenna of cowpea beetle, Callosobruchus maculatus (Fabricius) (Coleoptera : Bruchidae) after treatment with lufenuron. EKB Journal Management System, 2009; 2(1): 207-218. doi: 10.21608/eajbsa.2009.15615

Morphological changes induced in the antenna of cowpea beetle, Callosobruchus maculatus (Fabricius) (Coleoptera : Bruchidae) after treatment with lufenuron

Egyptian Academic Journal of Biological Sciences. A, Entomology
Article 20, Volume 2, Issue 1, June 2009, Page 207-218  XML PDF (1.08 MB)
Document Type: Original Article
DOI: 10.21608/eajbsa.2009.15615
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Authors
Mohamed W. Khalil1; Nadia R. A. Abo-zeid2; Soryia E. Hafez3; Ragaa K.A. Hamed3; Laila S. H Hamouda3
1Zoology Dept. Faculty of science-Fayoum University
2Fellow in Ain Shams Specialized Hospital, EM lab. Ain Shams University,Cairo, Egypt
3Department of Entomology, Faculty of Science, Ain Shams Univeristy
Abstract
The effect of a chitin synthesis inhibitor (Lufenuron) on the antennal segements and their sensilla of cowpea beetle, Callosobruchus maculatus (Fabricius) was studied by using scanning electron microscope.
Seven types of sensilla were recognized on both untreated and treated antennae with 9 ppm of lufenuron, including Böhm bristles (BB), two types of sensilla trichodea (ST1, ST2), sensilla chaetica (SC), two types of sensilla basiconica (SB1, SB2) and grooved peg (GP). The functions of these sensilla were discussed in relation to their position on the antenna.
Significant difference in lengths of most segments of the antennae between untreated and treated beetles was observed. A significant difference in lengths and diameters of nearly all types of sensilla was recorded. The highest increase in length of sensilla was noticed for the sensilla chaetica followed by sensilla trichodea. These types are used by insects as mechanosensory, sex pheromone and gustatory receptors that help them to make a decision to select their food and oviposition sites.
Keywords
Cowpea beetle; Callosobruchus maculatus; antennal sensilla; Insect growth regulator; Scanning Electron Microscope (SEM)
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