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. Author manuscript; available in PMC: 2013 Feb 19.
Published in final edited form as: Integr Zool. 2009 Mar;4(1):99–109. doi: 10.1111/j.1749-4877.2008.00139.x

Figure 1.

Figure 1

(A–D) Astyanax surface fish (A,C) and cavefish (B,D) adults (A,B) and 3-days post-fertilization larvae (C, D). Cavefish have no eyes and lack body melanin pigmentation. Cavefish larvae have small degenerating eye primordia lacking pigmentation. Arrows: eye primordia. Arrowheads:body pigment cells in surface fish. Scale bar in (C): 200 μm; magnification is the same in (C) and (D). (E) Diagram showing eye development in surface fish and eye degeneration in cavefish. Left: similar eye primordia are formed in surface fish (above) and cavefish (below) embryos. Middle and right: eyes differentiate and grow continuously during surface fish development; whereas they initially increase in size, subsequently degenerate and eventually sink into the orbit in cavefish.