Loss of red opsin genes relaxes sexual isolation between skin-colour variants of medaka

  title={Loss of red opsin genes relaxes sexual isolation between skin-colour variants of medaka},
  author={Makiko Kamijo and Mayuko Kawamura and Shoji Fukamachi},
  journal={Behavioural Processes},
Colour vision is often essential for animals. Fine discrimination of colours enhances the ability of animals to find food, predators, or mating partners. Using two colour variants of medaka (Oryzias latipes), which mate assortatively depending on visual cues (pale grey versus dark orange), we recently established red colour-blind strains by knocking out the red opsin (long-wavelength-sensitive) genes and elucidated that the fish were indeed insensitive to red light. In the present study, we… Expand
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