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Host shifts, genetic models of sympatric speciation and the origin of parasitic insect species



Host shifts, genetic models of sympatric speciation and the origin of parasitic insect species



Proceedings of the 5th International Symposium on Insect Plant Relationships, Wageningen, the Netherlands, 1-4 March 1982: 297-305



Host shifts in parasitic insects may involve changes in host selection and survival genes. Such shifts occur most often when the old and new host grow sympatrically and usually require genetic changes in both host selection and survival genes. Several proposed genetic modes of sympatric speciation are assessed with respect to their relevance to host race formation and speciation in parasites.

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