97/19 | General Article | Veterinary Parasitology
Evaluation of Eclosion Blocking Effect of Some Plant Extracts on the Cattle Tick Rhipicephalus (Boophilus) microplus
N. Jeyathilakan, S.T. Bino Sundar, A. Sangaran and Bhaskaran Ravi LathaDepartment of Veterinary Parasitology, Madras Veterinary College, TANUVAS, Chennai-600 007, Tamil Nadu.
Published in the Indian Veterinary Journal August 2019 : 96 (8) - pages 27 to 28(Received: March, 2019, Accepted: April, 2019)
Abstract
The current study was envisaged to evaluate the eclosion blocking effect of absolute (100% concentration) aqueous extracts from bulbs of Allium sativum, mucilage of Aloe vera, leaves of Azadirachta indica, Pongamia glabra and Tridox procumbens and rhizomes of Zingiber ofcinale on eggs of Rhipicephalus (Boophilus) microplus in vitro. Eggs (200 nos) were immersed for 5 minutes in absolute aqueous extract solutions along with standard acaricide deltamethrin and distilled water separately, incubated at 27-28oC at 70-80% relative humidity and examined daily for 30 days. Observations revealed that eclosion was blocked by extracts of Allium sativum, Pongamia glabra and Zingiber ofcinale even after twenty days, whereas extracts of Aloe vera, Azadirachta indica, Tridox procumbens, did not block the eclosion as observed in negative control on eggs of R. (Boophilus) microplus.
Key Words: Plant extracts, Rhipicephalus (Boophilus) microplus, Eclosion blocking