Language
English
Publication Date
9-15-2024
Journal
The Journal of Experimental Biology
DOI
10.1242/jeb.247503
PMID
39155640
PMCID
PMC11449437
PubMedCentral® Posted Date
9-25-2024
PubMedCentral® Full Text Version
Post-print
Abstract
Understanding how internal states such as satiety are connected to animal behavior is a fundamental question in neuroscience. Hydra vulgaris, a freshwater cnidarian with only 12 neuronal cell types, serves as a tractable model system for studying state-dependent behaviors. We found that starved hydras consistently move towards light, while fed hydras do not. By modeling this behavior as a set of three sequences of head orientation, jump distance and jump rate, we demonstrate that the satiety state only affects the rate of the animal jumping to a new position, while the orientation and jump distance are unaffected. These findings yield insights into how internal states in a simple organism, Hydra, affect specific elements of a behavior, and offer general principles for studying the relationship between state-dependent behaviors and their underlying molecular mechanisms.
Keywords
Animals, Hydra, Phototaxis, Behavior, Animal, Satiety Response, Animal behavior modeling, Extraocular, Hydra vulgaris, Internal states, Phototaxis, Satiety dependency
Published Open-Access
yes
Recommended Citation
Kim, Soonyoung; Badhiwala, Krishna N; Duret, Guillaume; et al., "Phototaxis Is a Satiety-Dependent Behavioral Sequence in Hydra vulgaris" (2024). Faculty, Staff and Students Publications. 6287.
https://digitalcommons.library.tmc.edu/baylor_docs/6287