Fovea-like photoreceptor specialisations underlie single UV-cone driven prey capture behaviour in zebrafish

Takeshi Yoshimatsu, Cornelius Schröde, Noora Nevala, Philipp Berens & Tom Baden
In the eye, the function of same-type photoreceptors must be regionally adjusted to process a highly asymmetrical natural visual world. Here we show that UV-cones in the larval zebrafish area temporalis are specifically tuned for UV-bright prey capture in their upper frontal visual field, which uses the signal from a single cone at a time. For this, UV-detection efficiency is regionally boosted 42-fold. Next, in vivo 2-photon imaging, transcriptomics and computational modelling reveal that these...
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