Light microscopy study of the retina of the Yellow-legged Gull, Larus michahellis, and the relationship between environment and behaviour

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Title: Light microscopy study of the retina of the Yellow-legged Gull, Larus michahellis, and the relationship between environment and behaviour
Authors: Vidal, M.N. | Segovia Huertas, Yolanda | Victory, Noemí | Navarro Sempere, Alicia | García Irles, Magdalena
Research Group/s: Grupo de Inmunología, Biología Celular y del Desarrollo
Center, Department or Service: Universidad de Alicante. Departamento de Biotecnología
Keywords: Retinal adaptations | Vision in marine birds | Larus michahellis | Visual ecology
Knowledge Area: Biología Celular
Issue Date: Oct-2018
Publisher: Science Reviews 2000
Citation: Avian Biology Research. 2018, 11(4): 231-237. doi:10.3184/175815618X15282819619105
Abstract: The morphology of the retina of the adult Yellow-legged Gull, Larus michahellis, was examined in transverse sections under light microscopy in order to study the retinal adaptations to their specific photic environment that determines their behaviour. We identified rods, single cones and unequal double cones. Although it is a duplex retina, cones are preponderant and coloured oil droplets are present in their inner segments. As several colours in oil droplets are observed, it seems reasonable to conclude that several types of cones are present. Moreover, more cones per unit area are found in the central regions of the retina than in peripheral regions. A probable area centralis is observed. In the inner nuclear layer, two types of horizontal cells, and bipolar and amacrine cells can be recognised. Also, ganglion cells, characterised by prominent nuclei and nucleoli, vary in size and abundance among different regions in the retina. Comparisons are made with the retinae of other marine birds. The morphological characteristics of this retina indicate that Larus michahellis possesses: a good ability to discriminate colour; complex visual processing in the inner retina in order to mediate contrast and motion perception; and an elevated acuity in areas of high ganglion cell density.
URI: http://hdl.handle.net/10045/82967
ISSN: 1758-1567 (Print) | 1758-1559 (Online)
DOI: 10.3184/175815618X15282819619105
Language: eng
Type: info:eu-repo/semantics/article
Rights: © Science Reviews 2000 Ltd
Peer Review: si
Publisher version: https://doi.org/10.3184/175815618X15282819619105
Appears in Collections:INV - Grupo de Inmunología - Artículos de Revistas

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