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Influence of Parasitization on Form Determination in Aphids

Abstract

PARASITIZATION of the immature stages of some insects and Crustacea is known to result in structural abnormalities in the adults. Examples from insects are the production of ‘intersexes’ in certain Homoptera and Hymenoptera when parasitized by Strepsiptera1, and of ‘intercastes’ of ants parasitized by nematodes2. Unparasitized aphids intermediate in structure between alate and apterous forms have been observed and described a number of times3, and it has now been found that in Aphis craccivora Koch this kind of intermediate can be produced by parasitization of alatiform nymphs by the braconid wasp Lysiphlebus testaceipes (Cresson).

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References

  1. Hasson, A. I., Trans. Roy. Ent. Soc., 89, 345 (1939). Salt, G., J. Exp. Zool., 59, 133 (1931).

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  2. Wheeler, W. M., J. Exp. Zool., 50, 165 (1928).

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JOHNSON, B. Influence of Parasitization on Form Determination in Aphids. Nature 181, 205–206 (1958). https://doi.org/10.1038/181205b0

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