Algorithms underlying flexible phototaxis in larval zebrafish

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2021
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Chen, Alex B.
Deb, Diptodip
Engert, Florian
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The Journal of Experimental Biology. Company of Biologists. 2021, 224(10), jeb238386. ISSN 0022-0949. eISSN 1477-9145. Verfügbar unter: doi: 10.1242/jeb.238386
Zusammenfassung

To thrive, organisms must maintain physiological and environmental variables in suitable ranges. Given that these variables undergo constant fluctuations over varying timescales, how do biological control systems maintain control over these values? We explored this question in the context of phototactic behavior in larval zebrafish. We demonstrate that larval zebrafish use phototaxis to maintain environmental luminance at a set point, that the value of this set point fluctuates on a timescale of seconds when environmental luminance changes, and that it is determined by calculating the mean input across both sides of the visual field. These results expand on previous studies of flexible phototaxis in larval zebrafish; they suggest that larval zebrafish exert homeostatic control over the luminance of their surroundings, and that feedback from the surroundings drives allostatic changes to the luminance set point. As such, we describe a novel behavioral algorithm with which larval zebrafish exert control over a sensory variable.

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Fachgebiet (DDC)
570 Biowissenschaften, Biologie
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Larval zebrafish, Phototaxis, Homeostasis, Allostatic control, Luminance adaptation, Behavioral tracking
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ISO 690CHEN, Alex B., Diptodip DEB, Armin BAHL, Florian ENGERT, 2021. Algorithms underlying flexible phototaxis in larval zebrafish. In: The Journal of Experimental Biology. Company of Biologists. 2021, 224(10), jeb238386. ISSN 0022-0949. eISSN 1477-9145. Verfügbar unter: doi: 10.1242/jeb.238386
BibTex
@article{Chen2021-05-15Algor-53516,
  year={2021},
  doi={10.1242/jeb.238386},
  title={Algorithms underlying flexible phototaxis in larval zebrafish},
  number={10},
  volume={224},
  issn={0022-0949},
  journal={The Journal of Experimental Biology},
  author={Chen, Alex B. and Deb, Diptodip and Bahl, Armin and Engert, Florian},
  note={Article Number: jeb238386}
}
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