Zebrafish (Danio rerio) gill neuroepithelial cells are sensitive chemoreceptors for environmental CO2.

@article{Qin2010ZebrafishR,
  title={Zebrafish (Danio rerio) gill neuroepithelial cells are sensitive chemoreceptors for environmental CO2.},
  author={Zengguang Qin and Jo E Lewis and Steve F. Perry},
  journal={The Journal of physiology},
  year={2010},
  volume={588 Pt 5},
  pages={861-72}
}
Adult zebrafish exhibit hyperventilatory responses to absolute environmental CO(2) levels as low as 0.13% ( mmHg), more than an order of magnitude lower than the typical arterial levels (40 mmHg) monitored by the mammalian carotid body. The sensory basis underlying the ability of fish to detect and respond to low ambient CO(2) levels is not clear. Here, we show that the neuroepithelial cells (NECs) of the zebrafish gill, known to sense O(2) levels, also respond to low levels of CO(2). An… CONTINUE READING
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