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LiCl inhibits the establishment of left‐right asymmetry in larvae of the direct‐developing echinoid Peronella japonica by Chisato Kitazawa; Kaori Kajihara Takai; Yoko Nakajima; Hirosuke Fujisawa; Shonan Amemiya is a Environmental Science article available to read on EtoBox.

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## Abstract The effect of LiCl on the establishment of left‐right (LR) asymmetry in larvae of the direct‐developing echinoid __Peronella japonica__ was investigated with special attention to the location of the amniotic opening and ciliary band pattern. The larvae of echinoids are LR symmetric, but shortly before metamorphosis the larval LR symmetry is lost as a result of the formation of an amniotic cavity (vestibule), part of the adult rudiment, on the left side of the body. __P. japonica__ has been considered to be the only exception among the echinoids, because the amniotic cavity forms at the midline of the larval body. In the present study we discovered the following two different LR asymmetric traits in larvae of __P. japonica__: the opening of the amniotic cavity initially forms at the midline of the larval body but shifts to the left dorsal side, and a looped ciliary band that initially forms with LR symmetry becomes LR asymmetric as a result of the formation of a bulge on left dorsal side. The establishment of LR asymmetry in both the location of the amniotic opening and the change in the shape of the ciliary band was influenced by exposing embryos to LiCl. Quantitative a

Who reads LiCl inhibits the establishment of left‐right asymmetry in larvae of the direct‐developing echinoid Peronella japonica?

Author

Chisato Kitazawa; Kaori Kajihara Takai; Yoko Nakajima; Hirosuke Fujisawa; Shonan Amemiya

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0022-104X)

Published

2004

Language

EN

Field

Environmental Science (Life Sciences)