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dc.contributor.author
Spano, Carlos A.
dc.contributor.author
Häussermann, Vreni
dc.contributor.author
Acuña, Fabian Horacio
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dc.contributor.author
Griffiths, Charles
dc.contributor.author
Seeb, Lisa W.
dc.contributor.author
Gomez-Uchida, Daniel
dc.date.available
2019-11-05T19:29:16Z
dc.date.issued
2018-10
dc.identifier.citation
Spano, Carlos A.; Häussermann, Vreni; Acuña, Fabian Horacio; Griffiths, Charles; Seeb, Lisa W.; et al.; Hierarchical biogeographical processes largely explain the genomic divergence pattern in a species complex of sea anemones (Metridioidea: Sagartiidae: Anthothoe); Academic Press Inc Elsevier Science; Molecular Phylogenetics and Evolution; 127; 10-2018; 217-228
dc.identifier.issn
1055-7903
dc.identifier.uri
http://hdl.handle.net/11336/88070
dc.description.abstract
The phylogenetic resolution provided by genome-wide data has demonstrated the usefulness of RAD sequencing to tackle long-standing taxonomic questions. Cnidarians have recently become a model group in this regard, yet species delimitation analyses have been mostly performed in octocorals. In this study, we used RAD sequencing to test the species hypotheses in a wide-spread complex of sea anemones (genus Anthothoe), contrasting this new line of evidence with their current classification. The alternative hypotheses were tested using a Bayes Factors delimitation method, and the most probable species tree was then evaluated under different biogeographic scenarios. Our results decisively rejected the current morphology-informed delimitation model and infer the presence of several cryptic species associated with distinct marine ecoregions. This spatial pattern was remarkably consistent throughout the study, highlighting the role of geographic distribution as a powerful explanatory variable of lineages diversification. The southern Gondwana pattern with episodic, jump dispersal events is the biogeographic historical representation that best fits the Anthothoe species tree. The high population differentiation possibly amplified by the occurrence of asexual reproduction makes it difficult to identify genes responsible for local adaptation, however, these seem to be mainly associated with cellular and metabolic processes. We propose a new set of species hypotheses for the Southern Hemispheric Anthothoe clade, based on the pronounced genomic divergence observed among lineages. Although the link between the genetic and phenotypic differentiation remains elusive, newer sequencing technologies are bringing us closer to understanding the evolution of sea anemone diversity and, therefore, how to appropriately classify them.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Inc Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
RAD sequencing
dc.subject
Species delimitation
dc.subject
Anthothoe
dc.subject
Actiniaria
dc.subject.classification
Biología Marina, Limnología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Hierarchical biogeographical processes largely explain the genomic divergence pattern in a species complex of sea anemones (Metridioidea: Sagartiidae: Anthothoe)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-24T19:39:09Z
dc.identifier.eissn
1095-9513
dc.journal.volume
127
dc.journal.pagination
217-228
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Spano, Carlos A.. Universidad de Concepción; Chile
dc.description.fil
Fil: Häussermann, Vreni. Pontificia Universidad Católica de Valparaíso; Chile. Huinay Scientific Field Station; Chile
dc.description.fil
Fil: Acuña, Fabian Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
dc.description.fil
Fil: Griffiths, Charles. University Of Cape Town; Sudáfrica
dc.description.fil
Fil: Seeb, Lisa W.. University Of Washington. School Of Aquatic And Fisheries Sciences; Estados Unidos
dc.description.fil
Fil: Gomez-Uchida, Daniel. Universidad de Concepción; Chile
dc.journal.title
Molecular Phylogenetics and Evolution
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://linkinghub.elsevier.com/retrieve/pii/S105579031830099X
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ympev.2018.05.022
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