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Journal of Entomology
  Year: 2019 | Volume: 16 | Issue: 2 | Page No.: 55-61
DOI: 10.3923/je.2019.55.61
 
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Acaricidal Activity of Cassia fistula Linn. Ripe Pod Extract Against Rhipicephalus sanguineus Semi-Engorged Females

Amornrat Juasook , Theerawat Wongsuwan, Thipchompoo Sing-Ayudthaya and Sinaphorn Pongpa

Abstract:
Background and Objective: The present study evaluates the acaricidal activities of Cassia fistula ripe pod extract on mortality rate, laying rate and morphological changes of Rhipicephalus sanguineus for search a new alternative method of controlling of ticks population. Materials and Methods: A total of 90 semi-engorged female ticks were divided into 3 groups (0.25% w/v fipronil as a synthetic acaricide, C. fistula ripe pod extract and distilled water) with 3 replications. All ticks in each group was evaluated by immersion test, then the ticks were incubated for 14 days and dead ticks were fixed with Karnovsky's solution for scanning electron microscopy examination. Results: Cassia fistula extract showed acaricidal activity. The laying rate of female ticks treated with extracts of the C. fistula pod extract was 33.33% which was significantly less (p<0.05) than the control group (50.00%) and there was no significant difference between mortality of the C. fistula pod extract group (83.33%) and the fipronil group (100%). All ticks in this study showed normal external structure by scanning electron microscopy observation. Conclusion: Extract from C. fistula ripe pod affected mortality and inhibited oviposition of semi-engorged female ticks and could be a promising natural acaricidal product. Further studies are needed to identify the active ingredients present in this plant and explore its possible mechanisms of action.
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How to cite this article:

Amornrat Juasook, Theerawat Wongsuwan, Thipchompoo Sing-Ayudthaya and Sinaphorn Pongpa, 2019. Acaricidal Activity of Cassia fistula Linn. Ripe Pod Extract Against Rhipicephalus sanguineus Semi-Engorged Females. Journal of Entomology, 16: 55-61.

DOI: 10.3923/je.2019.55.61

URL: https://scialert.net/abstract/?doi=je.2019.55.61

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