Induction of Metamorphosis in the Sea Urchin, Pseudocentrotus depressus, using L-Glutamine

スポンサーリンク

概要

• 論文の詳細を見る

• Larvae of the sea urchin, Pseudocentrotus depressus, were induced to metamorphose using 10^<-6>-10^<-4> M L-glutamine. After being subjected to 6×10^<-5> M glutamine, the larvae ceased swimming, began to retract their arms, extruded primary podia through an opening of the larva at a vestibule of echinus rudiment (ER) and then everted the ER, requiring 1-9 hr, 7-11 hr, 7-38 hr and 12-48 hr (from the time of the recognition of the first larva to the time of the maximum larvae changes), respectively. The effective times needed in the glutamine-treatment were 2 hr for induction of the cessation of larval swimming and the start of arm-retraction, and 4-8 hr to induce the ER-eversion. There was no correlation between the extruding of primary podia and the amount of time needed for the glutamine-treatment. From the difference seen in the effective time of glutamine-treatment, the early changes in metamorphosis ; cessation of swimming and start of arm-retraction, are not autonomously linked to the later change ; ER-eversion. L-glutamic acid and γ-aminobutyric acid (GABA) did not induce metamorphosis. 10^<-7> M GABA provoked a rapid cramp in the arms and a spreading of spines, and the larva seemed to undergo ER-eversion, but within a few hours they returned to their original larval shape. Thus eversion-like changes induced by GABA may not reach a true ER-eversion due to an absence of process or processes which were induced by the 4-8 hr treatment of glutamine over a long period of time (12-48 hr).

• 社団法人日本動物学会の論文
• 1994-04-15

著者

• Yazaki I

  Tokyo Metropolitan Univ. Tokyo Jpn

• Yazaki Ikuko

  Department Of Biological Science Faculty Of Science Tokyo Metropolitan University

• Harashima Hiroki

  Department of Biology, Faculty of Science, Tokyo Metropolitan University

• Harashima Hiroki

  Department Of Biology Faculty Of Science Tokyo Metropolitan University

関連論文

• CA^ SIGNALING INVOLVED IN MICROMERE-SPECIFICATION IN THE SEA URCHIN DEVELOPMENT(Developmental Biology,Abstracts of papers presented at the 76^ Annual Meeting of the Zoological Society of Japan)
• Induction of larval metamorphosis in the sea cucumber Apostichopus japonicus by neurotransmitters
• Quantitative Analysis of Metamorphosis Induced by L-Glutamine in Embryos of the Sea Urchin, Hemicentrotus pulcherrimus
• Larval and Juvenile Development of the Echinometrid Sea Urchin Colobocentrotus mertensii : Emergence of the Peculiar Form of Spines(Developmental Biology)
• Induction of Metamorphosis in the Sea Urchin, Pseudocentrotus depressus, using L-Glutamine

スポンサーリンク