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uBio  Web  Results 1 - 10 of about 31 Broader Terms:    Streptopelia (turtle-doves)     Streptopelia senegalensis (Laughing Dove)      External Resources: 1.  Vision adaptation in the laughing dove (Streptopelia senegalensis, Linnaeus, 1766) inferred from structural, ultrastructural, and genetic characterization. Sultan AE, Ghoneim AM, El-Gammal HL, El-Bakary NER The Journal of comparative neurology J Comp Neurol Vision adaptation in the laughing dove (Streptopelia senegalensis, Linnaeus, 1766) inferred from structural, ultrastructural, and genetic characterization. 10.1002/cne.25059 Neuroanatomy of the retina reflects adaptation and acclimation for dark and light conditions. Retinal cells and genes must be functionally adjusted to various environmental luminosities. Opsins are brilliant molecules to assess the adaptations at the genetic and phenotypic levels. Photic adaptations may reveal new mechanisms that enhance vision abilities. Through the investigation of histological, ultrastructural constituents of the whole retinal layers, and the sequencing of shortwave length sensitive opsin 1 (SWS1) of the laughing dove (Streptopelia senegalensis), the current study confirms the plasticity of the retina in response to the natural photic conditions. Retinal pigmented epithelium has plentiful melanosomes, signifying a highly adapted eye for maximum light perception and protection. Variously colored oil droplets signify high color vision ability. Stratified outer nuclear layer with many Müller cells suggests high sensitivity to dim conditions and high retinal regeneration. The penetration of outer limiting membrane by photoreceptor nuclei and Müller cell microvilli could minimize the light reflection. Oligodendrocytes establish thick myelination demanded for a keen visual acuity. A functional violet sensitive SWS1 with crucial Ser90 is presumed. Molecular phylogeny showed a secondary loss as color vision was shifted back from ultraviolet (UV) sensitivity to the ancestral avian violet sensitivity, thus improving visual resolution. However, SWS1 has some UV sensitive residues. These findings implicate not only spectral adaptations with high color vision ability and acuity but also photoinduced structural reorganizations. Further studies are needed to assess the secrets between photons and the structural genes. © 2020 Wiley Periodicals LLC. Sultan Aya E AE Zoology Department, Faculty of Science, Damietta University, Damietta, Egypt. Ghoneim Ahmed M AM https://orcid.org/0000-0003-2839-9538 Zoology Department, Faculty of Science, Damietta University, Damietta, Egypt. El-Gammal Hekmat L HL Zoology Department, Faculty of Science, Damietta University, Damietta, Egypt. El-Bakary Neveen E R NER Zoology Department, Faculty of Science, Damietta University, Damietta, Egypt. eng Damietta University Journal Article 2020 10 23 United States J Comp Neurol 0406041 0021-9967 IM laughing dove (Streptopelia senegalensis) photoreceptors phylogeny retina shortwave-sensitive opsin 1 (SWS1) vision 2020 06 23 2020 10 12 2020 10 19 2020 10 24 6 0 2020 10 24 6 0 2020 10 23 8 39 aheadofprint 33094834 10.1002/cne.25059