Effects of serotonin on the heartbeat of pond snails in a hunger state

Miki Yamagishi, Takayuki Watanabe, Dai Hatakeyama, Etsuro Ito*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Serotonin (5-hydroxytryptamine: 5-HT) is a multimodal transmitter that controls both feeding response and heartbeat in snails. However, the effects of 5-HT on the hunger state are still unknown. We therefore examined the relation among the hunger state, the heartbeat rate and the 5-HT action in food-starved snails. We found that the hunger state was significantly distinguished by the heartbeat rate in snails. The heartbeat rate was high in the food-satiated snails, whereas it was low in the food-starved snails. An increase in 5-HT concentration in the body boosted the heartbeat rate in the food-starved snails, but did not affect the rate in the food-satiated snails. These results suggest that 5-HT application may mimic the change from a starvation to a satiation state normally achieved by direct ingestion of food.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalBiophysics (Japan)
Publication statusPublished - 2015
Externally publishedYes


  • Food satiation
  • Food starvation
  • Heartbeat
  • Lymnaea
  • Serotonin

ASJC Scopus subject areas

  • Biophysics


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