Evidence for UV-green dichromacy in the basal hymenopteran Sirex noctilio (Siricidae)
| Autor: | Bernard Slippers, Jeremy D. Allison, Quentin Guignard, Johannes Spaethe, Martin F. Strube-Bloss |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Opsin Symphyta genetic structures Ultraviolet Rays Science Hymenoptera 010603 evolutionary biology 01 natural sciences Article 03 medical and health sciences medicine Electroretinography Animals Apocrita Compound Eye Arthropod Phylogeny Likelihood Functions Multidisciplinary medicine.diagnostic_test biology Colour vision Simple eye in invertebrates Compound eye biology.organism_classification medicine.disease eye diseases 030104 developmental biology Gene Expression Regulation Evolutionary biology Medicine Molecular evolution sense organs Dichromacy Entomology |
| Zdroj: | Scientific Reports Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021) |
| ISSN: | 2045-2322 |
| Popis: | A precondition for colour vision is the presence of at least two spectral types of photoreceptors in the eye. The order Hymenoptera is traditionally divided into the Apocrita (ants, bees, wasps) and the Symphyta (sawflies, woodwasps, horntails). Most apocritan species possess three different photoreceptor types. In contrast, physiological studies in the Symphyta have reported one to four photoreceptor types. To better understand the evolution of photoreceptor diversity in the Hymenoptera, we studied the Symphyta Sirex noctilio, which belongs to the superfamily Siricoidea, a closely related group of the Apocrita suborder. Our aim was to (i) identify the photoreceptor types of the compound eye by electroretinography (ERG), (ii) characterise the visual opsin genes of S. noctilio by genomic comparisons and phylogenetic analyses and (iii) analyse opsin mRNA expression. ERG measurements revealed two photoreceptor types in the compound eye, maximally sensitive to 527 and 364 nm. In addition, we identified three opsins in the genome, homologous to the hymenopteran green or long-wavelength sensitive (LW) LW1, LW2 and ultra-violet sensitive (UV) opsin genes. The LW1 and UV opsins were found to be expressed in the compound eyes, and LW2 and UV opsins in the ocelli. The lack of a blue or short-wavelength sensitive (SW) homologous opsin gene and a corresponding receptor suggests that S. noctilio is a UV-green dichromate. |
| Databáze: | OpenAIRE |
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