A non-selective serotonin antagonist promotes rapid habituation in the terrestrial hermit crab

Research has indicated that serotonin (5-HT) modulates non-associative learning in a variety of invertebrate species. Recent work has demonstrated that the terrestrial hermit crab is a suitable animal model for non-associative learning phenomena, including habituation, sensitization, and dishabituat...

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Published inSaudi journal of biological sciences Vol. 26; no. 7; pp. 1621 - 1625
Main Authors Sumra, Kirandeep, Stahlman, W. David
Format Journal Article
LanguageEnglish
Published Riyadh, Saudi Arabia Elsevier B.V 01.11.2019
Saudi Biological Society
Elsevier
Subjects
Habituation
Hermit crab
Methysergide
Risk assessment
Sensitization
Serotonin
الاعتياد
الجوانب الفسيولوجية
السيروتونين
Sensitization
Hermit crab
Serotonin
Risk assessment
Methysergide
Habituation
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Summary:Research has indicated that serotonin (5-HT) modulates non-associative learning in a variety of invertebrate species. Recent work has demonstrated that the terrestrial hermit crab is a suitable animal model for non-associative learning phenomena, including habituation, sensitization, and dishabituation. We examined the potential role of a non-selective 5-HT antagonist, methysergide, in non-associative learning in the hermit crab. We administered methysergide prior to delivering repeated stimulus presentations of a looming visual predator. We found evidence for more rapid habituation relative to a control condition in which crabs did not receive the drug. These results indicate a role for 5-HT in the defensive behavior of the hermit crab and importantly, suggest a conserved role for 5-HT in modulating basic learning processes in invertebrates.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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College of Medicine, University of Arizona, AZ, USA.
Department of Psychological Science, University of Mary Washington, VA, USA.
ISSN:1319-562X
2213-7106
DOI:10.1016/j.sjbs.2018.09.008