Preprint Article Version 1 This version is not peer-reviewed

Vibrio cholerae Gut Colonization of Zebrafish Larvae Induces Differential Behavior Responses

Version 1 : Received: 14 August 2024 / Approved: 15 August 2024 / Online: 16 August 2024 (13:31:33 CEST)

How to cite: Cubillejo, I.; Theis, K. R.; Panzer, J.; Luo, X.; Banerjee, S.; Thummel, R.; Withey, J. H. Vibrio cholerae Gut Colonization of Zebrafish Larvae Induces Differential Behavior Responses. Preprints 2024, 2024081167. https://doi.org/10.20944/preprints202408.1167.v1 Cubillejo, I.; Theis, K. R.; Panzer, J.; Luo, X.; Banerjee, S.; Thummel, R.; Withey, J. H. Vibrio cholerae Gut Colonization of Zebrafish Larvae Induces Differential Behavior Responses. Preprints 2024, 2024081167. https://doi.org/10.20944/preprints202408.1167.v1

Abstract

Cholera is a diarrheal disease prevalent in populations without access to clean water. Cholera is caused by Vibrio cholerae, which colonizes the upper small intestine in humans once ingested. A growing number of studies suggests the gut microbiome composition modulates animal behavior. Zebrafish are an established cholera model that can maintain a complex, mature gut microbiome during infection. Larval zebrafish, which have immature gut microbiomes, provide the advantage of high-throughput analyses for established behavioral models. We identified the effects of V. cholerae O1 El Tor C6706 colonization at 5 days post-fertilization (dpf) on larval zebrafish behavior by tracking startle responses at 10 dpf. We also characterized the larval gut microbiome using 16S rRNA sequencing. V. cholerae-infected or uninfected control groups were exposed to either an alternating light/dark stimuli or a single-tap stimulus, and average distance and velocity were tracked. While there was no significant difference in the light/dark trial, we report a significant decrease in distance moved for C6706-colonized larvae during the single-tap trial. This suggests that early V. cholerae colonization of the larval gut microbiome has a dampening effect on sensorimotor function, supporting the idea of a link between the gut microbiome and behavior.

Keywords

Vibrio cholerae; cholera; zebrafish larvae; microbiome; behavior

Subject

Biology and Life Sciences, Immunology and Microbiology

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