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Insights into the Functional Potential of rhe Rice Weevil Rostrum Based on Microstructure.

Manivannan, S. and Ezhilvendan, S. (2017) Insights into the Functional Potential of rhe Rice Weevil Rostrum Based on Microstructure. The Journal of Animal and Plant Sciences, 27 (2). pp. 688-690.

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The structural differentiation of rostrum in male and female adults of rice weevil, Sitophilus oryzae was examined under the light and electron microscopes to understand its functional potential in infestation/ovipositional tactics. The microscopic observation revealed that, the length of the rostrum was remarkably longer and thinner for females than in males. This adaptation in females is highly specific to deposit and protect eggs inside the grains. With the help of welldefined mouthparts in the apex of the rostrum, weevils chew and swallow food through the tunnel in the rostrum. No remarkable segments or sensillae were observed in both male and female rostrums. The study also signified that, rostrum could be used as a morphological marker key in differentiating males and females in S. oryzae and this species nearly shares common morphological features of rostrum with S. zeamais and S. granarius.

Item Type: Article
Uncontrolled Keywords: Sitophilus oryzae, rice weevil, rostrum, insect pest, stored food products, SEM.
Subjects: 600 Technology > 03 Agriculture > 05 Insect/Pest Control
600 Technology > 08 Food technology > 21 Cereals > 01 Rice
Divisions: Food Protectants and Infestation Control
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 18 Jan 2018 05:38
Last Modified: 18 Jan 2018 05:38
URI: http://ir.cftri.res.in/id/eprint/13297

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