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Title: Divergent selection on opsins drives incipient speciation in Lake Victoria cichlids
Authors: Terai, Yohey ×
Seehausen, Ole
Sasaki, Takeshi
Takahashi, Kazuhiko
Mizoiri, Shinji
Sugawara, Tohru
Sato, Tetsu
Watanabe, Masakatsu
Konijnendijk, Nellie
Mrosso, Hillary D. J
Tachida, Hidenori
Imai, Hiroo
Shichida, Yoshinori
Okada, Norihiro #
Issue Date: Dec-2006
Publisher: Public Library of Science
Series Title: PLoS Biology vol:4 issue:12 pages:2244-2251
Abstract: Divergent natural selection acting on ecological traits, which also affect mate choice, is a key element of ecological speciation theory, but has not previously been demonstrated at the molecular gene level to our knowledge. Here we demonstrate parallel evolution in two cichlid genera under strong divergent selection in a gene that affects both. Strong divergent natural selection fixed opsin proteins with different predicted light absorbance properties at opposite ends of an environmental gradient. By expressing them and measuring absorbance, we show that the reciprocal fixation adapts populations to divergent light environments. The divergent evolution of the visual system coincides with divergence in male breeding coloration, consistent with incipient ecological by-product speciation.
URI: 
ISSN: 1545-7885
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory for Animal Biodiversity and Systematics (-)
× corresponding author
# (joint) last author

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