Chronic speciation in periodical cicadas

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Allochronic speciation and reproductive character displacement are two intuitively attractive models of speciation. The first proposes that changes in the timing of life cycles produce new species, whereas the second suggests that speciation is due to the exaggeration of sexual isolation in sympatric populations. Clear examples of either process in nature remain elusive, despite some extensive searches. Two recent studies of mtDNA markers and behaviour of periodical cicadas in North America have identified a new species of cicada that seems to provide good evidence for the involvement of both processes in its origin.




Ritchie, M. G. (2001, February 1). Chronic speciation in periodical cicadas. Trends in Ecology and Evolution. Elsevier Ltd.

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