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Flight and settling behaviour of Rhopalosiphum Padi (L.) (Hemiptera: Aphididae)

Published online by Cambridge University Press:  10 July 2009

S. Wiktelius
S. Wiktelius
Affiliation:
Department of Plant and Forest Protection, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden
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Abstract

Alate exules of Rhopalosiphum padi (L.) were flown in a flight chamber for three different flight times: 1 min, 5 min and 25 min. The rate of climb was recorded continuously during flight. Afterwards, the aphids were forced to land on either wheat or potato and settling behaviour was recorded. The settling response was strengthened with increasing flight time on both plants. The aphids spent more time walking and made more probes on potato than on wheat after 25 min of flight. The rate of climb was the same immediately before landing as immediately after a spontaneous re-take-off, except after a 25-min flight and landing on potato when the rate of climb was significantly higher after re-take-off. Comparison with Aphis fabae Scop. from other investigations showed that the change in settling response with flight time was similar for the two species. R. padi seemed less able to discriminate rapidly between host and non-host plants than A. fabae. It is concluded that its behaviour does not hinder R. padi from being a vector of stylet-borne potato viruses.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 72 , Issue 1 , March 1982 , pp. 157 - 163
Copyright
Copyright © Cambridge University Press 1982

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