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Secondary host preferences and reproductive activity of the bird cherry‐oat aphid, Rhopalosiphum padi
Author(s) -
LEATHER S. R.,
DIXON A. F. G.
Publication year - 1982
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1982.tb00816.x
Subject(s) - biology , rhopalosiphum padi , dactylis glomerata , aphid , lolium perenne , alate , phleum , aphididae , host (biology) , botany , overwintering , agronomy , pest analysis , poaceae , homoptera , ecology
SUMMARY Of 15 species of grass, including cereals, alate exules and emigrants of Rhopalosiphum padi preferred to colonise Lolium perenne . Emigrants colonised cereals twice as readily as alate exules. Apterous exules also preferred L. perenne to cereals. Although small when reared on L. perenne, R. padi was more fecund per unit weight than on any of the other grasses tested. On the later growth stages of Dactylis glomerata and L. perenne, R. padi developed faster and were more fecund than on Phleum pratense at the same growth stages. At low temperatures R. padi were more fecund on P. pratense than on L. perenne and D. glomerata and vice versa at high temperatures. The secondary host preferences and reproductive activity of R. padi are discussed in relation to possible suitable hosts for viviparous overwintering and the pest status of this aphid in Britain.