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- Title
Effect of Phosphine on Esterases of Larvae and Adult Beetles of Phosphine-Exposed Populations of Stored Grain Pest, Trogoderma granarium Collected from Different Godowns of Punjab.
- Authors
Riaz, Tanzeela; Shakoori, Farah Rauf; Ali, Syed Shahid
- Abstract
The present study was aimed at determining the possible role of esterases in development of tolerance/resistance in phosphine-tolerant populations. The level of total esterases, carboxyl esterases, choline esterases, acetylcholine esterases and aryl esterases were determined in 4th & 6th instar larvae and adult beetles of phosphine-tolerant populations (previously exposed to phosphine for 15 years) of wheat grain pest, Trogoderma granarium collected from various storage facilities of Punjab, Pakistan viz., Mandi Bahauddin-I, Mandi Bahauddin-II, Gujrat, Gujranwala and Sargodha. The activities of all esterases tested were significantly increased in all field collected phosphine-tolerant populations when compared with phosphine-susceptible population. Among developmental stages, the 4th instar larvae possessed higher esterase activities than 6th instar larvae and adult beetles in all populations of T. granarium. The increased level of esterases in phosphine tolerant populations as compared to susceptible population has pointed some correlation between esterase activities and phosphine tolerance.
- Subjects
PUNJAB (Pakistan); GRAIN diseases &; pests; PHOSPHINE; ESTERASES; INSECT larvae; KHAPRA beetle
- Publication
Pakistan Journal of Zoology, 2017, Vol 49, Issue 3, p819
- ISSN
0030-9923
- Publication type
Article
- DOI
10.17582/journal.pjz/2017.49.3.819.824