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Seeing Picasso: an investigation into the visual system of the triggerfish Rhinecanthus aculeatus.
Cheney, Karen L; Hudson, Jemma; de Busserolles, Fanny; Luehrmann, Martin; Shaughnessy, Abigail; van den Berg, Cedric; Green, Naomi F; Marshall, N Justin; Cortesi, Fabio.
Afiliación
  • Cheney KL; School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia.
  • Hudson J; School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia.
  • de Busserolles F; Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia.
  • Luehrmann M; Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia.
  • Shaughnessy A; School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia.
  • van den Berg C; Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia.
  • Green NF; School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia.
  • Marshall NJ; School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia.
  • Cortesi F; Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia.
J Exp Biol ; 225(7)2022 04 01.
Article en En | MEDLINE | ID: mdl-35244167
Vision is used by animals to find food and mates, avoid predators, defend resources and navigate through complex habitats. Behavioural experiments are essential for understanding animals' perception but are often challenging and time-consuming; therefore, using species that can be trained easily for complex tasks is advantageous. Picasso triggerfish, Rhinecanthus aculeatus, have been used in many behavioural studies investigating vision and navigation. However, little is known about the molecular and anatomical basis of their visual system. We addressed this knowledge gap here and behaviourally tested achromatic and chromatic acuity. In terms of visual opsins, R. aculeatus possessed one rod opsin gene (RH1) and at least nine cone opsins: one violet-sensitive SWS2B gene, seven duplicates of the blue-green-sensitive RH2 gene (RH2A, RH2B, RH2C1-5) and one red-sensitive LWS gene. However, only five cone opsins were expressed: SWS2B expression was consistent, while RH2A, RH2C-1 and RH2C-2 expression varied depending on whether fish were sampled from the field or aquaria. Levels of LWS expression were very low. Using fluorescence in situ hybridisation, we found SWS2B was expressed exclusively in single cones, whereas RH2A and RH2Cs were expressed in opposite double cone members. Anatomical resolution estimated from ganglion cell densities was 6.8 cycles per degree (cpd), which was significantly higher than values obtained from behavioural testing for black-and-white achromatic stimuli (3.9 cpd) and chromatic stimuli (1.7-1.8 cpd). These measures were twice as high as previously reported. This detailed information on their visual system will help inform future studies with this emerging focal species.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Tetraodontiformes / Opsinas de los Conos Límite: Animals Idioma: En Revista: J Exp Biol Año: 2022 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Tetraodontiformes / Opsinas de los Conos Límite: Animals Idioma: En Revista: J Exp Biol Año: 2022 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Reino Unido