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Development of dim-light vision in the nocturnal reef fish family Holocentridae. I: Retinal gene expression.
Fogg, Lily G; Cortesi, Fabio; Lecchini, David; Gache, Camille; Marshall, N Justin; de Busserolles, Fanny.
Afiliación
  • Fogg LG; Queensland Brain Institute, The University of Queensland, Brisbane, Queensland 4072, Australia.
  • Cortesi F; Queensland Brain Institute, The University of Queensland, Brisbane, Queensland 4072, Australia.
  • Lecchini D; PSL Research University, EPHE-UPVD-CNRS, UAR3278 CRIOBE, 98729 Papetoai, Moorea, French Polynesia.
  • Gache C; Laboratoire d'Excellence "CORAIL", Paris 75006, France.
  • Marshall NJ; PSL Research University, EPHE-UPVD-CNRS, UAR3278 CRIOBE, 98729 Papetoai, Moorea, French Polynesia.
  • de Busserolles F; Laboratoire d'Excellence "CORAIL", Paris 75006, France.
J Exp Biol ; 225(17)2022 09 01.
Article en En | MEDLINE | ID: mdl-35929500
Developmental changes to the visual systems of animals are often associated with ecological shifts. Reef fishes experience a change in habitat between larval life in the shallow open ocean to juvenile and adult life on the reef. Some species also change their lifestyle over this period and become nocturnal. While these ecological transitions are well documented, little is known about the ontogeny of nocturnal reef fish vision. Here, we used transcriptomics to investigate visual development in 12 representative species from both subfamilies, Holocentrinae (squirrelfishes) and Myripristinae (soldierfishes), in the nocturnal coral reef fish family, Holocentridae. Results revealed that the visual systems of holocentrids are initially well adapted to photopic conditions with pre-settlement larvae having high levels of cone opsin gene expression and a broad cone opsin gene repertoire (8 genes). At reef settlement, holocentrids started to invest more in their scotopic visual system, and compared with adults, showed upregulation of genes involved in cell differentiation/proliferation. By adulthood, holocentrids had well developed scotopic vision with high levels of rod opsin gene expression, reduced cone opsin gene expression and repertoire (1-4 genes) and upregulated phototransduction genes. Finally, although the two subfamilies shared similar ecologies across development, their visual systems diverged after settlement, with Myripristinae investing more in scotopic vision than Holocentrinae. Hence, both ecology and phylogeny are likely to determine the development of the holocentrid visual system.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: 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: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: 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