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Figure 2 | EvoDevo

Figure 2

From: Revisiting de Beer’s textbook example of heterochrony and jaw elongation in fish: calmodulin expression reflects heterochronic growth, and underlies morphological innovation in the jaws of belonoid fishes

Figure 2

Comparative skeletal development of medaka, Oryzias latipes and halfbeak, Dermogenys pusilla. (A-H) lateral orientation, (A-D) O. latipes, (E-H) D. pusilla, stages are matched based on the relative timing of skeletal ossification. The upper and lower jaws of medaka maintain roughly similar proportions throughout development (A-D). At birth, the jaws of halfbeak resemble those of medaka (E), however they become elongated throughout development, whereby the lower jaw grows proportionally more than the upper jaw (F-H). Abbreviations: den = dentary, dpb = days post birth, dph = days post hatch, e = eye, eth = ethmoid, lpj = lower pharyngeal jaw, mc = Meckel’s cartilage, mx = maxilla, pmx = premaxilla.

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ISSN: 2041-9139