Mitonuclear discordance in wolf spiders : genomic evidence for species integrity and introgression
|Author:||Ivanov, Vladislav1; Lee, Kyung Min1; Mutanen, Marko1|
1Department of Ecology and Genetics, University of Oulu, PO Box 3000, Oulu, 90014, Finland
|Online Access:||PDF Full Text (PDF, 0.9 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe202002044502
John Wiley & Sons,
|Publish Date:|| 2020-02-04
Systematists and taxonomists have benefited greatly from the emergence of molecular methods. Species identification has become straightforward through DNA barcoding and the rapid build‐up of massive DNA barcode reference libraries. In animals, mitonuclear discordance can significantly complicate the process of species identification and delimitation. The causes of mitonuclear discordance are either biological (e.g., introgression, incomplete lineage sorting, horizontal gene transfer androgenesis) or induced by operational factors (e.g., human error with specimen misidentification or incorrect species delimitation). Moreover, endosymbionts may play an important role in promoting fixation of mitochondrial genomes. Here, we study the mitonuclear discordance of wolf spiders species (Lycosidae) (independent cases from Alopecosa aculeata and Pardosa pullata groups) that share identical COI DNA barcodes. We approached the case utilizing double‐digest restriction site‐associated DNA sequencing (ddRADseq) to obtain and analyse genomic‐scale data. Our results suggest that the observed cases of mitonuclear discordance are not due to operational reasons but result from biological processes. Further analysis indicated introgression and that incomplete lineage sorting is unlikely to have been responsible for the observed discrepancy. Additional survey of endosymbionts provided ideas on further research and their role in shaping mitochondrial DNA distribution patterns. Thus, ddRADseq grants an efficient way to study the taxonomy of problematic groups with insight into underlying evolutionary processes.
|Pages:||1681 - 1695|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
1181 Ecology, evolutionary biology
1184 Genetics, developmental biology, physiology
The whole study was funded by the Finnish Academy of Sciences, grant no. 277984 accorded to Marko Mutanen.
|Academy of Finland Grant Number:||
277984 (Academy of Finland Funding decision)
© 2018 John Wiley & Sons Ltd. "This is the peer reviewed version of the following article: Ivanov, V, Lee, KM, Mutanen, M. Mitonuclear discordance in wolf spiders: Genomic evidence for species integrity and introgression. Mol Ecol. 2018; 27: 1681– 1695, which has been published in final form at https://doi.org/10.1111/mec.14564. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving."