Bionomics of Rose Thrips, Frankliniella Occidentalis Pergande

Kanara Hg Acharya Mf

doi:10.4172/2376-0354.1000109

Abstract

A lab trial was conducted during 2012-13 at Department of Entomology, College of Agriculture, JAU, Junagadh to study the bionomics of rose thrips, Frankliniella occidentalis Pergande. Laboratory studies revealed that the female laid their eggs in the leaf tissues by sharp ovipositor. The average incubation period was found 5.28 day. The larva passed through two distinct instar and average duration of each instar was 1.72 and 4.76 day, respectively. The total larval period was on an average of 6.48 day with the total pupal period of 3.96 day. The average pre-oviposition, oviposition and post-oviposition period were 3.12, 32.68 and 4.20 day, respectively. The number of progenies produced by a single female varied from 28 to 69 with an average of 58.8. The average longevity of male and female was 21.60 and 42.36 day with entire life span of 25.52 and 48.40 day, respectively. The sex ratio of male to female was worked out as 1: 1.73 at a constant temperature of 25 ± 1°C.

Highlights

Frankliniella occidentalis (Pergande) [Thripidae: Thysanoptera] is a serious problem on rose grown under protected cultivation
In order to develop the initial culture of thrips, F. occidentalis, large number of adults were collected with the help of aspirator from the rose plants, five females and two males were picked up individually by means of moistened camel hair brush and released gently into a glass vial (3 cm × 1 cm) held in an inverted position
Present studies revealed that the female of F. occidentalis inserted their eggs, partially or completely, into parenchyma tissue of leaves or flower by making incision with the help of saw like ovipositor

Summary

Introduction

Frankliniella occidentalis (Pergande) [Thripidae: Thysanoptera] is a serious problem on rose grown under protected cultivation. Egg A pair of male and female was enclosed in a glass vial (3 cm×1 cm) containing a rose leaflet for oviposition. The incubation period and number of larvae emerged out was recorded.

Results

Conclusion