DNA reconciles morphology and colouration in the drunk blenny genus Scartichthys (Teleostei: Blenniidae) and provides insights into their evolutionary history

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dc.contributor.authorDelrieu-Trottin, Erwan
dc.contributor.authorHartmann-Salvo, Hans
dc.contributor.authorSaenz-Agudelo, Pablo
dc.contributor.authorLandaeta, Mauricio F.
dc.contributor.authorPerez-Matus, Alejandro
dc.date.accessioned2025-01-20T22:01:18Z
dc.date.available2025-01-20T22:01:18Z
dc.date.issued2022
dc.description.abstractThe blenniids of the genus Scartichthys are one of the most common fishes of Central and South American Pacific coastal reefs. This being said, Scartichthys spp. remain difficult to identify in the field, and identification is particularly challenging across the c. 6000 km where three of the four currently accepted species are known to occur in sympatry. A reason for this is that the main taxonomic characters from traditional taxonomy are indeed elusive. In addition, at the same time, species can display multiple colour patterns in the field, depending on their ontogenetic stage, habitat association and reproductive behaviour. Overall, molecular characterization is warranted to help address these issues. In this study, the authors have used a novel approach to revise the genus by combining colouration, morphological and molecular data of representative specimens of the four currently valid species and seven described colour patterns. From this, the authors show that only three of the four species should be considered as valid; Scartichthys gigas (Steindachner, 1876), Scartichthys variolatus (Valenciennes, 1836) and Scartichthys viridis (Valenciennes, 1836), whereas Scartichthys crapulatus (Williams, Smithsonian Contributions to Zoology, 1990, 492, 1-30) should be synonymized with S. viridis. In the same way, the analyses in this study show that one of the colour patterns attributed so far only to S. gigas is characteristic of the juvenile stages of S. viridis. The time-calibrated phylogeny of this study shows that this genus is relatively young and that the estimated time of divergence between S. gigas and S. viridis is c. 1.71 Ma. In comparison, the Desventuradas and Juan Fernandez Islands endemic S. variolatus diverged c. 1.95 Ma. The results of this study help to clarify the taxonomy of Scartichthys.
dc.description.funderFondo Nacional de Desarrollo Cientifico y Tecnologico (FONDECYT)
dc.fuente.origenWOS
dc.identifier.doi10.1111/jfb.14960
dc.identifier.eissn1095-8649
dc.identifier.issn0022-1112
dc.identifier.urihttps://doi.org/10.1111/jfb.14960
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93807
dc.identifier.wosidWOS:000740512800001
dc.issue.numero2
dc.language.isoen
dc.pagina.final518
dc.pagina.inicio507
dc.revistaJournal of fish biology
dc.rightsacceso restringido
dc.subjectbiogeographyChileintegrative taxonomykelp forestsmolecular phylogenyspecies delimitation
dc.subject.ods15 Life on Land
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleDNA reconciles morphology and colouration in the drunk blenny genus Scartichthys (Teleostei: Blenniidae) and provides insights into their evolutionary history
dc.typeartículo
dc.volumen100
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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