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Phylogenomic analyses of a Mediterranean earthworm family (Annelida: Hormogastridae)

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Novo Rodríguez, Marta and Fernández García, Rosa Mª and Andrade, Sonia C. S. and Marchán, Daniel F. and Cunha, Luis and Díaz Cosín, Darío J. (2016) Phylogenomic analyses of a Mediterranean earthworm family (Annelida: Hormogastridae). Molecular Phylogenetics and Evolution, 94 (Part B). pp. 473-478. ISSN 1055-7903, ESSN: 1095-9513

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Official URL: https://www.sciencedirect.com/science/article/pii/S1055790315003292



Abstract

Earthworm taxonomy and evolutionary biology remain a challenge because of their scarce distinct morphological characters of taxonomic value, the morphological convergence by adaptation to the uniformity of the soil where they inhabit, and their high plasticity when challenged with stressful or new environmental conditions. Here we present a phylogenomic study of the family Hormogastridae, representing also the first piece of work of this type within earthworms. We included seven transcriptomes of the group representing the main lineages as previously-described, analysed in a final matrix that includes twelve earthworms and eleven outgroups. While there is a high degree of gene conflict in the generated trees that obscure some of the internal relationships, the origin of the family is well resolved: the hormogastrid Hemigastrodrilus appears as the most ancestral group, followed by the ailoscolecid Ailoscolex, therefore rejecting the validity of the family Ailoscolecidae. Our results place the origin of hormogastrids in Southern France, as previously hypothesised.


Item Type:Article
Uncontrolled Keywords:Next generation sequencing; Transcriptomics; Oligochaeta; Gene conflict; Phylogeny
Subjects:Medical sciences > Biology > Invertebrates
ID Code:46715
Deposited On:06 Mar 2018 11:18
Last Modified:10 Dec 2018 15:25

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