Changes in the levels of serotonin and dopamine in the central nervous system and ovary, and their possible roles in the ovarian development in the giant freshwater prawn, Macrobrachium rosenbergii

General and Comparative Endocrinology
Yotsawan TinikulPrasert Sobhon

Abstract

Serotonin or 5-hydroxytryptamine (5-HT) and dopamine (DA) are the two key neurotransmitters that control gonadal development in decapod crustaceans. This study investigated changes in the levels of 5-HT and DA in the CNS and ovary during different phases of the ovarian cycle of the freshwater prawn, Macrobrachium rosenbergii. The levels of 5-HT and DA were quantified by using High Performance Liquid Chromatography with electrochemical detection (HPLC-ECD). Moreover, changes of vitellogenin (Vg) concentrations in the hemolymph after treatment with 5-HT and DA (at doses of 2.5 x 10(-6) and 2.5 x 10(-7)mol per prawn) were also examined. 5-HT exhibited a gradual increase in concentration in the brain and thoracic ganglia from ovarian stage I (0.12+/-0.01 nmol/mg, 0.22+/-0.01 nmol/mg, respectively) to reach a maximum (0.66+/-0.03 nmol/mg, 1.48+/-0.03 nmol/mg, respectively) at ovarian stage IV. In contrast, DA in the brain and thoracic ganglia showed the highest concentrations at ovarian stage II (0.20+/-0.01 nmol/mg, 1.27+/-0.06 nmol/mg, respectively) and then decreased to the lowest concentrations (0.06+/-0.01 nmol/mg, 0.28+/-0.04 nmol/mg, respectively) at ovarian stage IV. The ovarian concentration of 5-HT was 0.53+/-0.11 nmol/mg ...Continue Reading

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Citations

Jan 1, 2013·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Bingye YangCaihuan Ke
Oct 5, 2010·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Alejandra Valeria CahanskyEnrique Marcelo Rodríguez
Oct 12, 2010·Synapse·Leonardo Rodríguez-SosaGonzalo Flores
Jan 1, 2014·Microscopy Research and Technique·Napamanee KornthongPrasert Sobhon
Jul 13, 2016·General and Comparative Endocrinology·Saowaros Suwansa-ArdPrasert Sobhon
Jul 30, 2016·Environmental Science and Pollution Research International·Anne LafontaineEric Gismondi
Jan 19, 2018·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Arada ChaiyamoonYotsawan Tinikul
Dec 15, 2010·The Journal of Experimental Biology·Ganji Purna Chandra Nagaraju

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