Faculty Publications

Title

Change of eye shape during metamorphosis in two flatfishes, Paralichthys olivaceus and Solea senegalensis, with comparison of eye shape within the Pleuronectiformes

Document Type

Article

Keywords

Eye diameter, Eye migration, Flatfishes, Transverse axis, Vertical axis

Journal/Book/Conference Title

Ichthyological Research

Volume

60

Issue

2

First Page

178

Last Page

183

Abstract

The most remarkable developmental event during metamorphosis in flatfish (Pleuronectiformes) is the migration of their eyes; one eye migrates upwards, then passes through the dorsal midline, and finally stops on the other side. In this study, we determined that the ratio of the movable eye diameter on the transverse axis (DTA) to that on the vertical axis (DVA) increased during the metamorphosis of Paralichthys olivaceus and Solea senegalensis. Based on the recently proposed hypothesis that eye migration of flatfishes is caused by the push force from the proliferated tissue of the suborbital region, we postulated that the eye shape change is a result of the same force. Measurements of eye proportions in 20 species of adult flatfishes revealed that the DTA is constantly larger than the DVA, suggesting that the mechanisms of eye shape change and eye migration driven by proliferating cells in the suborbital tissue are universal among flatfishes. © 2013 The Ichthyological Society of Japan.

Original Publication Date

4-1-2013

DOI of published version

10.1007/s10228-012-0332-9

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