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Fuzzy species limits in Mediterranean gorgonians (Cnidaria, Octocorallia): inferences on speciation processes
- Source :
- Zoologica Scripta, Zoologica Scripta, Wiley, 2017, 46 (6), pp.767-778. 〈10.1111/zsc.12245〉, Zoologica Scripta, 2017, 46 (6), pp.767-778. ⟨10.1111/zsc.12245⟩, Zoologica Scripta, Wiley, 2017, 46 (6), pp.767-778. ⟨10.1111/zsc.12245⟩, Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP
- Publication Year :
- 2017
- Publisher :
- Wiley, 2017.
-
Abstract
- The study of the interplay between speciation and hybridization is of primary importance in evolutionary biology. Octocorals are ecologically important species whose shallow phylogenetic relationships often remain to be studied. In the Mediterranean Sea, three congeneric octocorals can be observed in sympatry: Eunicella verrucosa, Eunicella cavolini and Eunicella singularis. They display morphological differences and E.singularis hosts photosynthetic Symbiodinium, contrary to the two other species. Two nuclear sequence markers were used to study speciation and gene flow between these species, through network analysis and Approximate Bayesian Computation (ABC). Shared sequences indicated the possibility of hybridization or incomplete lineage sorting. According to ABC, a scenario of gene flow through secondary contact was the best model to explain these results. At the intraspecific level, neither geographical nor ecological isolation corresponded to distinct genetic lineages in E.cavolini. These results are discussed in the light of the potential role of ecology and genetic incompatibilities in the persistence of species limits. French National Research Agency (ANR) program Adacni (ANR) [ANR-12-ADAP-0016] CNRS Hubert Curien 'Tassili' program [12MDU853] CCMAR Strategic Plan from Fundacao para a Ciencia e a Tecnologia-FCT [PEst-C/MAR/LA0015/2011, FEDER info:eu-repo/semantics/publishedVersion
- Subjects :
- 0301 basic medicine
Sympatry
Octocorallia
intron
Evolution
Introgression
ved/biology.organism_classification_rank.species
Insights
Gene flow
Coalescent theory
03 medical and health sciences
Eunicella singularis
Genetics
14. Life underwater
Adaptation
Haplotype reconstruction
Molecular Biology
octocorals
hybridization
Ecology, Evolution, Behavior and Systematics
Eunicella
[ SDE.BE ] Environmental Sciences/Biodiversity and Ecology
Eunicella-singularis
Diversity
biology
Phylogenetic tree
ved/biology
Ecology
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]
Population-genetics
Algal symbiosis
biology.organism_classification
030104 developmental biology
[ SDV.BID.EVO ] Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]
speciation
Eunicella cavolini
Animal Science and Zoology
Coral
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
ABC
Subjects
Details
- Language :
- English
- ISSN :
- 03003256 and 14636409
- Database :
- OpenAIRE
- Journal :
- Zoologica Scripta, Zoologica Scripta, Wiley, 2017, 46 (6), pp.767-778. 〈10.1111/zsc.12245〉, Zoologica Scripta, 2017, 46 (6), pp.767-778. ⟨10.1111/zsc.12245⟩, Zoologica Scripta, Wiley, 2017, 46 (6), pp.767-778. ⟨10.1111/zsc.12245⟩, Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP
- Accession number :
- edsair.doi.dedup.....a4c1689c0979af6ced9041cd7311f2a4