Natural selection
How do Sinocyclocheilus genomes record cave life?
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Sinocyclocheilus cavefish genomes reveal troglomorphic adaptations such as eye degeneration and albinism, paralleling and differing from Astyanax.
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How do Sinocyclocheilus genomes record cave life?
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What adaptation context is studied?
adaptation to dark subterranean life among other groups of distinct but closely-related cavefishes.
What characters puzzle biologists?
biologists have long puzzled over these troglomorphic characters []
Key findings
Genomic/transcriptomic signatures of eye degeneration and pigmentation loss; some mechanisms differ from Astyanax; constructive cave traits also suggested.
Methodology
Sequenced cave/surface Sinocyclocheilus genomes and compared gene content/expression for cave-related traits.
Limitations
Does not prove a single universal cave-adaptation gene across all fish.
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