Paper chromatographic and fluorometric examination of the serotonin content in the nervous system and other tissues of three freshwater Molluscs (Anodonta, Unio, Lymnaea)

Hiripi, László (1968) Paper chromatographic and fluorometric examination of the serotonin content in the nervous system and other tissues of three freshwater Molluscs (Anodonta, Unio, Lymnaea). A Magyar Tudományos Akadémia Tihanyi Biológiai Kutatóintézetének évkönyve, 35. pp. 3-11. ISSN 0365-3005

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Abstract

Examinations on the concentration of serotonin by paper chromatography and fluorometric method in the central nervous system and other tissues of Anodonta cygnea L., Unio pictorum and Lymnaea stagnalis L. have led to the following conclusions: 1. 5HT was demonstrable in the ganglia, the cerebrovisceral connective (CVc) of the gill, the adductors and the mantle of Anodonta and Unio. In the heart, however, its presence could not be demonstrated. The order of 5HT concentration in the case of Anodonta: cerebral ggl. (72.5 pg/g), pedal ggl. (66.5 pg/g); visceral ggl. (43.5 pg/g); CVc 38 pg/g; mantle (0.37 pg/g); muscle (0.33 pg/g); gill (0.25 pg/g), in the case of Unio: cerebral ggl. (112 pg/g); pedal ggl. (108 pg/g); visceral ggl. (66 pg/g); CVc (53.5 pg/g); gill (0.9 pg/g); mantle (0.33 pg/g); muscle (0.22 pg/g). 2. The ganglia of the Lymnaea contain less 5HT than those of the Lamellibranchs. 3. The high serotonin content of the CVc speaks in favour of the possibility of serotonin transport. 4. The low serotonin-content of the adductor indicates th a t the presence of this compound is connected to the nerve elements, and it is suggested th at it might be related to its functioning as a neuromuscular transmitter.

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