Insights into the evolution of photoreceptor oil droplets in frogs and toads DOI
Nadia G. Cervino, Agustín J. Elias‐Costa, Patricia P. Iglesias

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2027)

Published: July 1, 2024

Photoreceptor oil droplets (ODs) are spherical organelles placed most commonly within the inner segment of cone photoreceptors. Comprising neutral lipids, ODs can be either non-pigmented or pigmented and have been considered optically functional in various studies. Among living amphibians, were only reported to occur frogs toads (Anura), while they absent salamanders caecilians. Nonetheless, limited understanding their taxonomic distribution anurans impedes a comprehensive assessment evolution relationship with visual ecology. We studied retinae 134 anuran species, extending knowledge 46 58 currently recognized families, providing new perspective on this group that complements available information from other vertebrates. The occurrence shows strong phylogenetic signal, our findings revealed evolved at least six times during evolutionary history group, independently Although no evident correlation was found between OD occurrence, adult habits diel activity, it is inferred each independent origin involves distinct scenarios concerning photic habits. Furthermore, results significant differences size nocturnal arrhythmic relative length cones’ outer segment.

Language: Английский

Insights into the evolution of photoreceptor oil droplets in frogs and toads DOI
Nadia G. Cervino, Agustín J. Elias‐Costa, Patricia P. Iglesias

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2027)

Published: July 1, 2024

Photoreceptor oil droplets (ODs) are spherical organelles placed most commonly within the inner segment of cone photoreceptors. Comprising neutral lipids, ODs can be either non-pigmented or pigmented and have been considered optically functional in various studies. Among living amphibians, were only reported to occur frogs toads (Anura), while they absent salamanders caecilians. Nonetheless, limited understanding their taxonomic distribution anurans impedes a comprehensive assessment evolution relationship with visual ecology. We studied retinae 134 anuran species, extending knowledge 46 58 currently recognized families, providing new perspective on this group that complements available information from other vertebrates. The occurrence shows strong phylogenetic signal, our findings revealed evolved at least six times during evolutionary history group, independently Although no evident correlation was found between OD occurrence, adult habits diel activity, it is inferred each independent origin involves distinct scenarios concerning photic habits. Furthermore, results significant differences size nocturnal arrhythmic relative length cones’ outer segment.

Language: Английский

Citations

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