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Article: Settlement behavior of black scallop larvae (Chlamys varia, L.) in response to GABA, epinephrine and IBMX.(gamma aminobutyric acid, 3-isobutyl-l-methylxanthine)(Report)
- Article from:
- Journal of Shellfish Research
- Article date:
- April 1, 2008
- Author:
CopyrightCOPYRIGHT 2008 National Shellfisheries Association, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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ABSTRACT Competent larvae of the black scallop Chlamys varia (L.) were treated with the neurotransmitter gamma-amino-n- butyric acid (GABA), the catecholamine epinephrine, and 3-isobutyl-l-methylxanthine (IBMX), at different concentrations and times of exposure, to test the effects of exposure to the compounds on larval settlement. After 24 h, maximum percentage of settlement (>30%) was induced by [10.sup.-5] M epinephrine. After 48 h, maximum settlement rate was also achieved by [10.sup.-5] M epinephrine (>54%). Exposure to [10.sup.-6] M epinephrine and to [10.sup.-6] M GABA also induced significantly higher larval settlement than in control larvae. By contrast, IBMX ...
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