Variable vision in variable environments: The visual system of an invasive cichlid (Cichla monoculus) in Lake Gatun, Panama
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1242/jeb.188300 http://hdl.handle.net/11449/221267 |
Resumo: | An adaptive visual system is essential for organisms inhabiting new or changing light environments. The Panama Canal exhibits such variable environments owing to its anthropogenic origin and current human activities. Within the Panama Canal, Lake Gatun harbors several exotic fish species including the invasive peacock bass (Cichla monoculus), a predatory Amazonian cichlid. In this research, through spectral measurements and molecular and physiological experiments, we studied the visual system of C. monoculus and its adaptive capabilities. Our results suggest that (1) Lake Gatun is a highly variable environment, where light transmission changes throughout the canal waterway, and that (2) C. monoculus has several visual adaptations suited for this red-shifted light environment. Cichla monoculus filters short wavelengths (∼400 nm) from the environment through its ocular media and tunes its visual sensitivities to the available light through opsin gene expression. More importantly, based on shifts in spectral sensitivities of photoreceptors alone, and on transcriptome analysis, C. monoculus exhibits extreme intraspecific variation in the use of vitamin A1/A2 chromophore in their photoreceptors. Fish living in turbid water had higher proportions of vitamin A2, shifting sensitivities to longer wavelengths, than fish living in clear water. Furthermore, we also found variation in retinal transcriptomes, where fish from turbid and clear waters exhibited differentially expressed genes that vary greatly in their function. We suggest that this phenotypic plasticity has been key in the invasion success of C. monoculus. |
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Variable vision in variable environments: The visual system of an invasive cichlid (Cichla monoculus) in Lake Gatun, PanamaChromophoreCichlidsFish visionInvasive speciesPhenotypic plasticityTranscriptomicsAn adaptive visual system is essential for organisms inhabiting new or changing light environments. The Panama Canal exhibits such variable environments owing to its anthropogenic origin and current human activities. Within the Panama Canal, Lake Gatun harbors several exotic fish species including the invasive peacock bass (Cichla monoculus), a predatory Amazonian cichlid. In this research, through spectral measurements and molecular and physiological experiments, we studied the visual system of C. monoculus and its adaptive capabilities. Our results suggest that (1) Lake Gatun is a highly variable environment, where light transmission changes throughout the canal waterway, and that (2) C. monoculus has several visual adaptations suited for this red-shifted light environment. Cichla monoculus filters short wavelengths (∼400 nm) from the environment through its ocular media and tunes its visual sensitivities to the available light through opsin gene expression. More importantly, based on shifts in spectral sensitivities of photoreceptors alone, and on transcriptome analysis, C. monoculus exhibits extreme intraspecific variation in the use of vitamin A1/A2 chromophore in their photoreceptors. Fish living in turbid water had higher proportions of vitamin A2, shifting sensitivities to longer wavelengths, than fish living in clear water. Furthermore, we also found variation in retinal transcriptomes, where fish from turbid and clear waters exhibited differentially expressed genes that vary greatly in their function. We suggest that this phenotypic plasticity has been key in the invasion success of C. monoculus.Department of Biology University of MarylandNaos Marine Laboratories Smithsonian Tropical Research Institute, Calzada de Amador, Bld 356Plant Ecology Group Institute of Evolution and Ecology University of Tübingen, Auf der Morgenstelle 5Department of Morphology Biosciences Institute Saõ Paulo State UniversityUniversity of MarylandSmithsonian Tropical Research InstituteUniversity of TübingenSaõ Paulo State UniversityEscobar-Camacho, DanielPierotti, Michele E.R.Ferenc, ViktoriaSharpe, Diana M.T.Ramos, EricaMartins, CesarCarleton, Karen L.2022-04-28T19:27:04Z2022-04-28T19:27:04Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1242/jeb.188300Journal of Experimental Biology, v. 222, n. 6, 2019.0022-0949http://hdl.handle.net/11449/22126710.1242/jeb.1883002-s2.0-85063290092Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Experimental Biologyinfo:eu-repo/semantics/openAccess2022-04-28T19:27:04Zoai:repositorio.unesp.br:11449/221267Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:01:31.794308Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Variable vision in variable environments: The visual system of an invasive cichlid (Cichla monoculus) in Lake Gatun, Panama |
title |
Variable vision in variable environments: The visual system of an invasive cichlid (Cichla monoculus) in Lake Gatun, Panama |
spellingShingle |
Variable vision in variable environments: The visual system of an invasive cichlid (Cichla monoculus) in Lake Gatun, Panama Escobar-Camacho, Daniel Chromophore Cichlids Fish vision Invasive species Phenotypic plasticity Transcriptomics |
title_short |
Variable vision in variable environments: The visual system of an invasive cichlid (Cichla monoculus) in Lake Gatun, Panama |
title_full |
Variable vision in variable environments: The visual system of an invasive cichlid (Cichla monoculus) in Lake Gatun, Panama |
title_fullStr |
Variable vision in variable environments: The visual system of an invasive cichlid (Cichla monoculus) in Lake Gatun, Panama |
title_full_unstemmed |
Variable vision in variable environments: The visual system of an invasive cichlid (Cichla monoculus) in Lake Gatun, Panama |
title_sort |
Variable vision in variable environments: The visual system of an invasive cichlid (Cichla monoculus) in Lake Gatun, Panama |
author |
Escobar-Camacho, Daniel |
author_facet |
Escobar-Camacho, Daniel Pierotti, Michele E.R. Ferenc, Viktoria Sharpe, Diana M.T. Ramos, Erica Martins, Cesar Carleton, Karen L. |
author_role |
author |
author2 |
Pierotti, Michele E.R. Ferenc, Viktoria Sharpe, Diana M.T. Ramos, Erica Martins, Cesar Carleton, Karen L. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
University of Maryland Smithsonian Tropical Research Institute University of Tübingen Saõ Paulo State University |
dc.contributor.author.fl_str_mv |
Escobar-Camacho, Daniel Pierotti, Michele E.R. Ferenc, Viktoria Sharpe, Diana M.T. Ramos, Erica Martins, Cesar Carleton, Karen L. |
dc.subject.por.fl_str_mv |
Chromophore Cichlids Fish vision Invasive species Phenotypic plasticity Transcriptomics |
topic |
Chromophore Cichlids Fish vision Invasive species Phenotypic plasticity Transcriptomics |
description |
An adaptive visual system is essential for organisms inhabiting new or changing light environments. The Panama Canal exhibits such variable environments owing to its anthropogenic origin and current human activities. Within the Panama Canal, Lake Gatun harbors several exotic fish species including the invasive peacock bass (Cichla monoculus), a predatory Amazonian cichlid. In this research, through spectral measurements and molecular and physiological experiments, we studied the visual system of C. monoculus and its adaptive capabilities. Our results suggest that (1) Lake Gatun is a highly variable environment, where light transmission changes throughout the canal waterway, and that (2) C. monoculus has several visual adaptations suited for this red-shifted light environment. Cichla monoculus filters short wavelengths (∼400 nm) from the environment through its ocular media and tunes its visual sensitivities to the available light through opsin gene expression. More importantly, based on shifts in spectral sensitivities of photoreceptors alone, and on transcriptome analysis, C. monoculus exhibits extreme intraspecific variation in the use of vitamin A1/A2 chromophore in their photoreceptors. Fish living in turbid water had higher proportions of vitamin A2, shifting sensitivities to longer wavelengths, than fish living in clear water. Furthermore, we also found variation in retinal transcriptomes, where fish from turbid and clear waters exhibited differentially expressed genes that vary greatly in their function. We suggest that this phenotypic plasticity has been key in the invasion success of C. monoculus. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2022-04-28T19:27:04Z 2022-04-28T19:27:04Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1242/jeb.188300 Journal of Experimental Biology, v. 222, n. 6, 2019. 0022-0949 http://hdl.handle.net/11449/221267 10.1242/jeb.188300 2-s2.0-85063290092 |
url |
http://dx.doi.org/10.1242/jeb.188300 http://hdl.handle.net/11449/221267 |
identifier_str_mv |
Journal of Experimental Biology, v. 222, n. 6, 2019. 0022-0949 10.1242/jeb.188300 2-s2.0-85063290092 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Experimental Biology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129013396275200 |