Eur. J. Entomol. 91 (1): 23-28, 1994

Environmental factors and morphological discrimination between spring and summer migrants of the grain aphid, Sitobion avenae (Homoptera: Aphididae)

HELDEN A.J., DIXON A.F.G., CARTER N.
N/A

The morphology of spring and summer migrants of Sitobion avenae (F.) from several different environmental conditions were compared using analysis of variance and canonical variate analysis. Both between morph and within morph differences were found for a range of morphometric features and ratios. When aphids of both morphs and from a range of conditions were considered together any morph differences were obscured by phenotypic variability. SimilarIy canonical variate analysis indicated that differences due to environmental variability were greater than those due to morph.

Keywords: Aphids, Sitobion avenae, morphology, spring and summer migrants, phenotypic variability

Accepted: February 10, 1994; Published: April 15, 1994  Show citation

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HELDEN, A.J., DIXON, A.F.G., & CARTER, N. (1994). Environmental factors and morphological discrimination between spring and summer migrants of the grain aphid, Sitobion avenae (Homoptera: Aphididae). EJE, 91(1), 23-28
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