Integr Zool 2021 May 4;16(3):354-367. Epub 2020 Aug 4.
State Key Laboratory of Membrane Biology, State Key Laboratory of Integrated Pest Management, Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
The adaptive evolution of visual systems has been observed in many cavefish. However, little is known about the molecular mechanisms underlying these adaptations, which include regressive changes such as eye degeneration. Here, we analyzed phylogenetic and expression patterns of 6 eye-related genes (crx, foxg1b, opn1sw2, otx2, rho and sox2) in 12 Sinocyclocheilus species from China, including 8 stygobionts and 4 stygophiles, and examined photoreceptor cell morphology of these species. Read More