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Effect of mineral oils on host plant selection and probing behavior of Rhopalosiphum padi
Author(s) -
Boquel Sébastien,
Giguère MarieAndrée,
Pelletier Yvan
Publication year - 2016
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 - 10.1111/eea.12478
Subject(s) - rhopalosiphum padi , biology , aphid , potato virus y , macrosiphum euphorbiae , mineral oil , host (biology) , agronomy , botany , horticulture , homoptera , pest analysis , aphididae , plant virus , virus , ecology , chemistry , organic chemistry , virology
Aphids that colonize and reproduce on potato are some of the most efficient vectors of P otato virus Y ( PVY ) ( P otyviridae: P otyvirus), and hence these aphids have been the focus of the majority of studies to date. However, other non‐colonizing aphids can also function as vectors. Mineral oil is the only product available to growers that effectively prevents the spread of PVY in potato seed production. Most previous studies focused on the effect of mineral oil on the behavior of aphids on their preferential host plant, and consequently there is a lack of information for non‐colonizing aphids on potato plants. The objective of this study was to determine the effect of spraying potatoes with one of two mineral oils, Superior 70 or Vazyl‐Y, on host selection and probing behavior of the non‐colonizing aphid R hopalosiphum padi (L.) ( H emiptera: A phididae). The electrical penetration graph ( EPG ) technique, combined with ethological observations, determined that there was no difference in R . padi behavior on potato plants treated with Superior 70. However, there were few significant changes in R . padi behavior on plants sprayed with Vazyl‐Y, including a delay in the initiation of stylet penetration and an increase in the duration of xylem sap ingestion. These new data support previous results and confirm that the mode of action of mineral oil in the reduction of the spread of PVY is not solely due to the modification of the behavior of aphids.