半索動物研究の紹介 : 比較分子発生生物学的視点から

概要

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Hemichordates provide a unique phylogenetic nexus among the deuterostomes, because they exhibit early development and larval morphology similar to those of echinoderms and also have chordate-like adult morphology. Analysis of the expression and function of hemichordate developmental genes therefore provide significant insights into the evolution of the deuterostome body plans. Several years ago, we started molecular studies on the development of hemichordates. This paper briefly reviews results garnered from the studies of a few selected, specific genes for understanding the evolution of chordate structures. These studies have suggested new ideas about the evolution of developmental mechanisms in the bilateral animals and deuterostomes. This review also discusses the exciting possibilities for future studies on hemichordates.
日本動物分類学会の論文
2007-02-20