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Karyotype variation in the corn leaf aphid, Rhopalosiphum maidis (Fitch), species complex (Hemiptera: Aphididae) in relation to host-plant and morphology

  • P. A. Brown (a1) and R. L. Blackman (a1)

Abstract

Rhopalosiphum maidis (Fitch) collected on barley in the northern hemisphere usually has a ten-chromosome karyotype, whereas samples from maize, sorghum and Johnson grass (Sorghum halepense) from all parts of the world commonly have 2n = 8. Samples with other karyotypes (2n = 9, 2n = 11 and 2n = 8 heterozygous for an interchange between the X chromosomes) occur less frequently on these and other species of Gramineae. Multivariate morphometric analysis, principally by the method of canonical variates, indicated that the ten-chromosome form may be regarded as a single clone of R. maidis recognizable by its karyotype and host-plant relationships, although not completely separable by morphology alone from all other clones of this permanently parthenogenetic species complex.

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Blackman, R. L. (1980). Chromosome numbers in the Aphididae and their taxonomic significance.—Syst. Entomol. 5, 725.
Blackman, R. L. & Eastop, V. F. (1984). Aphids on the world's crops: an identification and information guide.—466 pp. Chichester, UK, Wiley.
Blackman, R. L., Brown, P. A. & Eastop, V. F. (1987). Problems in pest aphid taxonomy: can chromosomes plus morphometrics provide some answers?—pp. 233–238 in Holman, J., Pelikan, J., Dixon, A. F. G. & Weismann, L. (Eds). Population structure, genetics and taxonomy of aphids and Thysanoptera.—542 pp. The Hague, SPB Academic Publishing.
Chattopadhay, D., Das, P. L. & Raychaudhuri, D. (1982). Karyotype variation of Rhopalosiphum maidis (Fitch) (Homoptera: Aphididae).—Entomon 7, 441446.
Ilharco, F. A. & van Harten, A. (1987). Systematics.—pp. 51–77 in Minks, A. K. & Harrewijn, P. (Eds). Aphids. Their biology, natural enemies and control. Volume A.—450 pp. Amsterdam, Elsevier (World Crop Pests, 2A).
Martin, J. H. (1983). The identification of common aphid pests of tropical agriculture.—Tropical Pest Management 29, 395411.
Painter, R. H. & Pathak, M. D. (1962). The distinguishing features and significance of the four biotypes of the corn leaf aphid, Rhopalosiphum maidis (Fitch).—Proc. XI Int. Congr. Ent. 2, 110115.
Steiner, W. W. M., Voegtlin, D. J. & Irwin, M. E. (1985). Genetic differentiation and its bearing on migration in North American populations of the corn leaf aphid, Rhopalosiphum maidis (Fitch) (Homoptera: Aphididae).—Ann. ent. Soc. Am. 78, 518525.
Wilde, G. & Feese, H. (1973). A new corn leaf aphid biotype and its effect on some cereal and small grains.—J. econ. Ent. 66, 570571.

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Karyotype variation in the corn leaf aphid, Rhopalosiphum maidis (Fitch), species complex (Hemiptera: Aphididae) in relation to host-plant and morphology

  • P. A. Brown (a1) and R. L. Blackman (a1)

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