Green, yellow or black? Genetic differentiation and adaptation signatures in a highly migratory marine turtle

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dc.contributor.authorÁlvarez-Varas R.
dc.contributor.authorRojas-Hernández N.
dc.contributor.authorVéliz D.
dc.contributor.authorÁlvarez-Varas R.
dc.contributor.authorVéliz D.
dc.contributor.authorÁlvarez-Varas R.
dc.contributor.authorHeidemeyer M.
dc.contributor.authorRiginos C.
dc.contributor.authorBenítez H.A.
dc.contributor.authorAraya-Donoso R.
dc.contributor.authorReséndiz E.
dc.contributor.authorLara-Uc M.
dc.contributor.authorGodoy D.A.
dc.contributor.authorMuñoz-Pérez J.P.
dc.contributor.authorAlarcón-Ruales D.E.
dc.contributor.authorMuñoz-Pérez J.P.
dc.contributor.authorAlfaro-Shigueto J.
dc.contributor.authorOrtiz-Alvarez C.
dc.contributor.authorMangel J.C.
dc.contributor.authorAlfaro-Shigueto J.
dc.contributor.authorVianna J.A.
dc.date.accessioned2024-01-10T12:11:36Z
dc.date.available2024-01-10T12:11:36Z
dc.date.issued2021
dc.description.abstract© 2021 The Author(s).Marine species may exhibit genetic structure accompanied by phenotypic differentiation related to adaptation despite their high mobility. Two shape-based morphotypes have been identified for the green turtle (Chelonia mydas) in the Pacific Ocean: the south-central/western or yellow turtle and north-central/eastern or black turtle. The genetic differentiation between these morphotypes and the adaptation of the black turtle to environmentally contrasting conditions of the eastern Pacific region has remained a mystery for decades. Here we addressed both questions using a reduced-representation genome approach (Dartseq; 9473 neutral SNPs) and identifying candidate outlier loci (67 outlier SNPs) of biological relevance between shape-based morphotypes from eight Pacific foraging grounds (n = 158). Our results support genetic divergence between morphotypes, probably arising from strong natal homing behaviour. Genes and enriched biological functions linked to thermoregulation, hypoxia, melanism, morphogenesis, osmoregulation, diet and reproduction were found to be outliers for differentiation, providing evidence for adaptation of C. mydas to the eastern Pacific region and suggesting independent evolutionary trajectories of the shape-based morphotypes. Our findings support the evolutionary distinctness of the enigmatic black turtle and contribute to the adaptive research and conservation genomics of a long-lived and highly mobile vertebrate.
dc.description.funderESMOI
dc.description.funderNúcleo Milenio de Ecología y Manejo Sustentable de Islas
dc.description.funderCONICYT
dc.fechaingreso.objetodigital2024-05-23
dc.fuente.origenScopus
dc.identifier.doi10.1098/rspb.2021.0754
dc.identifier.eissn14712954
dc.identifier.issn14712954 09628452
dc.identifier.pubmedid34229490
dc.identifier.scopusidSCOPUS_ID:85110945423
dc.identifier.urihttps://doi.org/10.1098/rspb.2021.0754
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76669
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; De Abreu Vianna, Juliana; 0000-0003-2330-7825; 158861
dc.issue.numero20210754
dc.language.isoen
dc.nota.accesocontenido completo
dc.publisherRoyal Society Publishing
dc.revistaProceedings of the Royal Society B: Biological Sciences
dc.rightsacceso abierto
dc.subjectcandidate genes
dc.subjectChelonia mydas
dc.subjectconservation genomics
dc.subjecteastern Pacific
dc.subjectgenetic structure
dc.subjectmelanism
dc.titleGreen, yellow or black? Genetic differentiation and adaptation signatures in a highly migratory marine turtle
dc.typeartículo
dc.volumen288
sipa.codpersvinculados158861
sipa.indexScopus
sipa.indexPubmed
sipa.trazabilidadCarga SIPA;09-01-2024
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