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Abnormal morphogenesis of sea urchin embryo induced by UV partial irradiation given at cleavage stage.

Yoshihiro Akimoto, Tsugio Shiroya, Nobuo Egami

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Abstract

Morphological abnormalities due to UV partial irradiation to 8 or 16 cell embryos were studied in the sea urchin (Hemicentrotus pulcherrimus) embryo. UV irradiation on the animal hemisphere of 8, 16 cell embryos inhibited normal development at the gastrula stage and caused the formation of exogastrula. UV irradiation of the vegetal hemisphere arrested the normal development at the blastula stage and inhibited the gastrulation and the skeleton formation, giving rise to permanent blastula.

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What this paper is about

Morphological abnormalities due to UV partial irradiation to 8 or 16 cell embryos were studied in the sea urchin (Hemicentrotus pulcherrimus) embryo. UV irradiation on the animal hemisphere of 8, 16 cell embryos inhibited normal development at the gastrula stage and caused the formation of exogastrula. UV irradiation of the vegetal hemisphere arrested the normal development at the blastula stage and inhibited the gastrulation and the skeleton formation, giving rise to permanent blastula.

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Available abstract

Morphological abnormalities due to UV partial irradiation to 8 or 16 cell embryos were studied in the sea urchin (Hemicentrotus pulcherrimus) embryo. UV irradiation on the animal hemisphere of 8, 16 cell embryos inhibited normal development at the gastrula stage and caused the formation of exogastrula. UV irradiation of the vegetal hemisphere arrested the normal development at the blastula stage and inhibited the gastrulation and the skeleton formation, giving rise to permanent blastula.

Key concepts: Blastula, Hemicentrotus, Gastrulation, Embryo, Sea urchin, Cleavage (geology), Morphogenesis, Biology

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Abnormal morphogenesis of sea urchin embryo induced by UV partial irradiation given at cleavage stage. — Research Paper | ScholarLens