Evolutionary biology - Evidence for sympatric speciation?

Schliewen, U. K.; Kocher, T. D.; McKaye, K. R.; Seehausen, O.; Tautz, Diethard

doi:10.1038/nature05419

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Evolutionary biology - Evidence for sympatric speciation?

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Schliewen, U. K., Kocher, T. D., McKaye, K. R., Seehausen, O., & Tautz, D. (2006). Evolutionary biology - Evidence for sympatric speciation? Nature, 444(7120), E12-E13. doi:10.1038/nature05419.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-0E1B-A

Abstract

Sympatric speciation is difficult to demonstrate in nature and remains a hotly debated issue. Barluenga et al.1 present a case of putative sympatric speciation for two cichlid species in the Nicaraguan crater lake Apoyo, but they overlook or reinterpret some key published information on the system. Although sympatric speciation is possible in theory2,3, we show here that, when this information is taken into account, the results of Barluenga et al.1 do not provide conclusive evidence for sympatric speciation: this is because the null hypothesis of multiple invasion with introgression cannot be rejected.