TY - JOUR
T1 - Speciation through sensory drive in cichlid fish
AU - Seehausen, Ole
AU - Terai, Yohey
AU - Magalhaes, Isabel S.
AU - Carleton, Karen L.
AU - Mrosso, Hillary D.J.
AU - Miyagi, Ryutaro
AU - Van Der Sluijs, Inke
AU - Schneider, Maria V.
AU - Maan, Martine E.
AU - Tachida, Hidenori
AU - Imai, Hiroo
AU - Okada, Norihiro
N1 - Funding Information:
Acknowledgements We acknowledge the Tanzania Commission for Science & Technology for research permissions, the Tanzania Fisheries Research Institute, and its Muranza Centre director E. F. B. Katunzi, for hospitality and logistical support; M. Kayeba, M. Haluna, S. Mwaiko, M. Haesler and E. Burgerhout for help with data and fish collection; H. Araki, L. Excoffier, L. Harmon, B. Ibelings, I. Keller, T. Kocher, P. Nosil, M. Pierotti, D. Schluter, A. Sivasundar and O. Svensson for comments on the manuscript; and M. Kawata, J. J. M. van Alphen, K. Young, R. Stelkens and E. Bezault for discussion. This work was supported by Swiss National Science Foundation project 3100A0-106573 (to O.S.), and by the Ministry of Education, Culture, Sports, Science and Technology of Japan (to N.O.).
PY - 2008/10/2
Y1 - 2008/10/2
N2 - Theoretically, divergent selection on sensory systems can cause speciation through sensory drive. However, empirical evidence is rare and incomplete. Here we demonstrate sensory drive speciation within island populations of cichlid fish. We identify the ecological and molecular basis of divergent evolution in the cichlid visual system, demonstrate associated divergence in male colouration and female preferences, and show subsequent differentiation at neutral loci, indicating reproductive isolation. Evidence is replicated in several pairs of sympatric populations and species. Variation in the slope of the environmental gradients explains variation in the progress towards speciation: speciation occurs on all but the steepest gradients. This is the most complete demonstration so far of speciation through sensory drive without geographical isolation. Our results also provide a mechanistic explanation for the collapse of cichlid fish species diversity during the anthropogenic eutrophication of Lake Victoria.
AB - Theoretically, divergent selection on sensory systems can cause speciation through sensory drive. However, empirical evidence is rare and incomplete. Here we demonstrate sensory drive speciation within island populations of cichlid fish. We identify the ecological and molecular basis of divergent evolution in the cichlid visual system, demonstrate associated divergence in male colouration and female preferences, and show subsequent differentiation at neutral loci, indicating reproductive isolation. Evidence is replicated in several pairs of sympatric populations and species. Variation in the slope of the environmental gradients explains variation in the progress towards speciation: speciation occurs on all but the steepest gradients. This is the most complete demonstration so far of speciation through sensory drive without geographical isolation. Our results also provide a mechanistic explanation for the collapse of cichlid fish species diversity during the anthropogenic eutrophication of Lake Victoria.
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U2 - 10.1038/nature07285
DO - 10.1038/nature07285
M3 - Article
C2 - 18833272
AN - SCOPUS:53349119883
SN - 0028-0836
VL - 455
SP - 620
EP - 626
JO - Nature
JF - Nature
IS - 7213
ER -