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Electronically monitored cowpea aphid feeding behavior on resistant and susceptible lupins
Author(s) -
Zehnder Geoffrey W.,
Nichols Amy J.,
Edwards Owain R.,
RidsdillSmith T. James
Publication year - 2001
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1046/j.1570-7458.2001.00782.x
Subject(s) - biology , aphid , lupinus angustifolius , aphis craccivora , aphididae , phloem , homoptera , nezara viridula , horticulture , botany , lupinus , agronomy , pest analysis , hemiptera , pentatomidae
The feeding behavior of cowpea aphid, Aphis craccivora Koch (Homoptera: Aphididae) was examined on seedlings of narrow leafed lupin, Lupinus angustifolius L., and yellow lupin, L. luteus L., using electronic monitoring of insect feeding behavior (EMIF). Aphid feeding behavior was first compared between resistant (cv. Kalya) and susceptible (cv. Tallerack) varieties of narrow‐leafed lupin. Aphids spent significantly more time in non‐ penetration and stylet pathway activities, and significantly less time in the sieve element phase on Kalya than on Tallerack, suggesting that feeding deterrence is an important component of aphid resistance in Kalya. Aphid feeding on a susceptible yellow lupin variety (cv. Wodjil) was then compared with that on two resistant lines, one (Teo) with high and the other (94D024‐1) with low seed alkaloid content. There were no consistent differences in aphid feeding behavior between Wodjil and Teo. Total, mean and percentage sieve element phase times were significantly lower, and total and percentage times in non‐phloem phase were greater on 94D024‐1 than on Wodjil, suggesting the possibility of phloem‐based deterrence in 94D024‐1.