Behavioral and neurochemical changes in the zebrafish leopard strain
- Authors
- Maximino, C., Puty, B., Matos Oliveira, K.R., and Herculano, A.M.
- ID
- ZDB-PUB-130611-18
- Date
- 2013
- Source
- Genes, brain, and behavior 12(5): 576-82 (Journal)
- Registered Authors
- Maximino, Caio
- Keywords
- strain, zebrafish, anxiety, scototaxis, serotonin uptake
- MeSH Terms
-
- Animals
- Anxiety/genetics
- Anxiety/metabolism*
- Fluoxetine/pharmacology
- Monoamine Oxidase/metabolism
- Motor Activity/drug effects
- Mutation
- Phenotype
- Selective Serotonin Reuptake Inhibitors/pharmacology
- Serotonin/metabolism*
- Skin Pigmentation/genetics*
- Zebrafish/genetics
- Zebrafish/metabolism
- Zebrafish/physiology*
- PubMed
- 23679663 Full text @ Genes Brain Behav.
The zebrafish leopard phenotype (leo) displays abnormal pigmentation and shows increased anxiety-like behavior. The neurochemical changes associated with this anxious phenotype are not known. Here, we demonstrate that leo show increased anxiety-like behavior in the light/dark box and in the novel tank test. This anxious phenotype is rescued by acute treatment with a dose of a serotonin reuptake inhibitor, fluoxetine, that is inactive in wild-type animals. Moreover, leo show decreased tissue levels of serotonin, increased serotonin turnover, and slightly increased monoamine oxidase activity. These results suggest that the anxious phenotype observed in leo zebrafish is caused by a decrease in serotonin uptake. The present work could open an important avenue in defining the neurochemical underpinning of natural variation in anxiety disorders.