Involvement of transient larval neurons in osmoregulation and neurogenesis in the freshwater snails, Lymnaea stagnalis and Helisoma trivolvis

Chaban, Anastasia and Voronezhskaya, Elena (2008) Involvement of transient larval neurons in osmoregulation and neurogenesis in the freshwater snails, Lymnaea stagnalis and Helisoma trivolvis. Acta Biologica Hungarica, 59 (Supple). pp. 123-126. ISSN 0236-5383

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Abstract

The role of transient larval FMRFa-ergic neurons of the freshwater snails, Helisoma trivolvis and Lymnaea stagnalis , in osmoregulation and neurodifferentiation was investigated. It was shown that: (i) FMRFa and an FMRFa antibody do not reach their targets when injected into the egg capsule; (ii) long-term incubations of the embryos in neomycin and hyperosmotic solutions of sea water, NaCl and sucrose during the definite developmental stages lead to a special malformation-hydropia; (iii) hydropia coincides with an extensive larval FMRFa-ergic nervous system; (iv) the increased level of FMRFa causes earlier serotonin synthesis by the neurons of the visceral loop ganglia.

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