alexa Antifeedant and growth regulatory effects of Clerodendroninerme (Linn.) Gaertn. and Lantana camara L. extracts on tea mosquito bug, Helopeltistheivora Water house (Hemiptera: Miridae)
General Science

General Science

Entomology, Ornithology & Herpetology: Current Research

Author(s): Deka MK, Saikia GK

Abstract Share this page

Clerodendron inerme and Lantana camara extracts at 10.0, 8.0, 6.0, 4.0 and 2.0% concentrations were investigated in the laboratory against tea mosquito bug, Helopeltis theivora. The extracts exhibited significant effect on growth regulating properties such as feeding, nymphal and adult longevity, weight, mortality, adult emergence and fecundity The number of spots produced by a 4th instar nymph within 72 h varies from 385.00 395.75 and the same was reduced to 40.50±3.10 to 65.25±3.50 and 55.25±5.35 to 80.00±3.98 at 10.0 to 2.0% extracts of C. inerme and L. camara, respectively. Both the plant extracts enlengthened the duration of nymphal instars of the pest significantly. However, C. inerme enlengthened the duration of instar more significantly (4.00–4.75 d) than L. camara (3.19-.4.49 d). The per cent mortality of nymph varied from (21.50–30.12%) of C. inerme and (10.50–26.40%) of L. camara at 2.0–10.0%, respectively. The adult emergence (25.50–39.75 male and 26.30–40.15% female) from these treated nymphs also reduced significantly. Likewise, the extracts showed strong antifeedant effect (28.65–36.35 and 53.85 to 62.35 spots) in C. inerme and L. camara at 2.010.0% extracts respectively to the adults. The weight of both male and female adult reduced to 2.40–3.73 and 2.62–3.75 mg and 4.21- 5.49 and 4.36–5.64 mg by C. inerme and L. camara, respectively. Likewise the adult longevity was also reduced by both the extracts. The treated female also laid very few eggs (38.25–57.50) as against 115.25–116.13 eggs in untreated female.

  • To read the full article Visit
  • Subscription
This article was published in Pesticide Research Journal and referenced in Entomology, Ornithology & Herpetology: Current Research

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

  • World conference on Ecology and Ecosystems
    September 11-13, 2017, San Antonio, USA
  • 3rd International Conference on Green Energy and Expo
    September 28-29, 2017, Berlin, Germany
Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version