間隙性甲殻類における目の退化(2009年度日本動物分類学会シンポジウム)
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概要
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The interstitial ostracods and copepods have degenerated nauplius eye. The ultrastructure and ontogeny of their nauplius eyes are described here, using the transmission electron microscopy. The observations, found degenerative nauplius eyes in the both taxa. According to the comparison between the embryogenesis of normal nauplius eyes and the post-embryogenic development of degenerative nauplius eyes, it is strongly suggested that the degeneration is derived by paedomorphic evolution. Based on these observations as well as on some previous researches, I propose a hypothesis of the modularity, as hierarchical interactions in the nauplius eye.
- 2010-02-20