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- W2564745630 abstract "Abstract Coral reefs belong to the most diverse ecosystems on our planet. The diversity in coloration and lifestyles of coral reef fishes makes them a particularly promising system to study the role of visual communication and adaptation. Here, we investigated the evolution of visual pigment genes (opsins) in damselfish (Pomacentridae) and examined whether structural and expression variation of opsins can be linked to ecology. Using DNA sequence data of a phylogenetically representative set of 31 damselfish species, we show that all but one visual opsin are evolving under positive selection. In addition, selection on opsin tuning sites, including cases of divergent, parallel, convergent and reversed evolution, has been strong throughout the radiation of damselfish, emphasizing the importance of visual tuning for this group. The highest functional variation in opsin protein sequences was observed in the short‐ followed by the long‐wavelength end of the visual spectrum. Comparative gene expression analyses of a subset of the same species revealed that with SWS 1, RH 2B and RH 2A always being expressed, damselfish use an overall short‐wavelength shifted expression profile. Interestingly, not only did all species express SWS 1 – a UV ‐sensitive opsin – and possess UV ‐transmitting lenses, most species also feature UV ‐reflective body parts. This suggests that damsels might benefit from a close‐range UV ‐based ‘private’ communication channel, which is likely to be hidden from ‘ UV ‐blind’ predators. Finally, we found that LWS expression is highly correlated to feeding strategy in damsels with herbivorous feeders having an increased LWS expression, possibly enhancing the detection of benthic algae." @default.
- W2564745630 created "2017-01-06" @default.
- W2564745630 creator A5003582609 @default.
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- W2564745630 creator A5031706766 @default.
- W2564745630 creator A5061241280 @default.
- W2564745630 creator A5090083254 @default.
- W2564745630 date "2017-01-27" @default.
- W2564745630 modified "2023-10-16" @default.
- W2564745630 title "Why UV vision and red vision are important for damselfish (Pomacentridae): structural and expression variation in opsin genes" @default.
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- W2564745630 doi "https://doi.org/10.1111/mec.13968" @default.
- W2564745630 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/27997050" @default.