Identification of immature aphids by chromatography |
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Authors: | I. F. HENDERSON H. D. LOXDALE SUSAN P. GREENWOOD |
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Affiliation: | Rothamsted Experimental Station, Harpenden, Hertfordshire |
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Abstract: | - 1 Immature apterae of five species of cereal aphid were distinguished by ultraviolet examination of chromatograms of their fluorescent pigments.
- 2 Non-expert examiners could identify Metopolophium dirhodum, Sitobion fragariae and Rhopalosiphumpadi with a mean reliability of 98, 83 and 71% respectively; Metopolophium festucae and Sitobion avenae could be separated from the rest but not from each other.
- 3 All species gave consistent chromatograms whether reared on oats or on wheat: some species produced atypical traces if reared on certain grasses.
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