Effects of Lecanicillium longisporum infection on the behaviour of the green peach aphid Myzus persicae

E Roditakis, I D Couzin, N R Franks, A K Charnley

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The effects of the entomopathogenic fungus Lecanicillium longisporum (Zimmerman) Zare & Gams on three parameters of behaviour (feeding, reproduction and movement) of the green peach aphid Myzus persicae (Homoptera: Aphididae) were investigated in the laboratory. Visual analysis of video tapes established that honeydew excretion events of mycosed aphids gradually declined from 2 d post inoculation and reproduction rate was significantly reduced 2 d prior to death (which occurred on day 6); both parameters were stable in controls over the same period. A detailed comparison was made between mobility of aphids during infection with two isolates of L. longisporum, using image analysis of video recordings. Both isolates caused an increase in activity at the beginning of mycosis (during fungal germination and cuticle invasion) though the intensity and the duration of this behaviour varied with the isolate. The possibility that increased movement in early mycosis helps disseminate disease is discussed in the light of the observation that saprophytic surface growth occurs on living M. persicae as it does in at least some other Lecanicillium spp-insect interactions
Original languageEnglish
Pages (from-to)128-136
Number of pages9
JournalJournal of Insect Physiology
Volume54
Issue number1
DOIs
Publication statusPublished - Jan 2008

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Aphids
Myzus persicae
mycoses
Aphidoidea
Infection
infection
Mycoses
honeydew
entomopathogenic fungi
Reproduction
Aphididae
Homoptera
feeding behavior
excretion
Video Recording
Hemiptera
vaccination
image analysis
death
germination

Cite this

Effects of Lecanicillium longisporum infection on the behaviour of the green peach aphid Myzus persicae. / Roditakis, E; Couzin, I D; Franks, N R; Charnley, A K.

In: Journal of Insect Physiology, Vol. 54, No. 1, 01.2008, p. 128-136.

Research output: Contribution to journalArticle

Roditakis, E ; Couzin, I D ; Franks, N R ; Charnley, A K. / Effects of Lecanicillium longisporum infection on the behaviour of the green peach aphid Myzus persicae. In: Journal of Insect Physiology. 2008 ; Vol. 54, No. 1. pp. 128-136.
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