A functional role for an opiate system in snail thermal behavior.
The terrestrial snail Cepaea nemoralis, when placed on a 40 degrees C hot plate, lifts the anterior portion of its foot. The latency of this response is influenced by morphine and by naloxone in a dose-dependent and time-dependent manner. Morphine increases the time taken to respond, whereas naloxone reduces it. Furthermore, naloxone abolishes the effect of morphine. These results indicate that an opiate system may have a role in this behavior, which resembles that reported in vertebrates.
D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects / Q000502:physiology*; D004305:Dose-Response Relationship, Drug; D006358:Hot Temperature; D009020:Morphine / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology; D011957:Receptors, Opioid / Q000187:drug effects / Q000502:physiology*; D012908:Snails / Q000502:physiology*; D013823:Thermoreceptors / Q000502:physiology
D011957:Receptors, Opioid; D009270:Naloxone; D009020:Morphine