Disentangling the identity of Lebertia porosa Thor, 1900 using integrative taxonomy (Acari: Hydrachnidia)
Initial analyses of DNA barcode data from Norwegian populations attributed to the water mite Lebertia porosa Thor, 1900 revealed large genetic divergence and potentially cryptic species-level diversity. We used one mitochondrial (COI) and two nuclear markers (18S and 28S) as well as comparative mor...
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| Format: | Article |
| Language: | English |
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Consortium of European Natural History Museums
2022-09-01
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| Series: | European Journal of Taxonomy |
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| Online Access: | https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/1921 |
| _version_ | 1818064963355279360 |
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| author | Valentina Tyukosova Reinhard Gerecke Elisabeth Stur Torbjørn Ekrem |
| author_facet | Valentina Tyukosova Reinhard Gerecke Elisabeth Stur Torbjørn Ekrem |
| author_sort | Valentina Tyukosova |
| collection | DOAJ |
| description |
Initial analyses of DNA barcode data from Norwegian populations attributed to the water mite Lebertia porosa Thor, 1900 revealed large genetic divergence and potentially cryptic species-level diversity. We used one mitochondrial (COI) and two nuclear markers (18S and 28S) as well as comparative morphological analysis to redefine Lebertia porosa, and to further investigate the species boundaries of Norwegian populations of its close relatives. Our results show that Lebertia porosa, as currently defined, consists of multiple species that can be separated by molecular and morphological characteristics. Although we document the presence of the endosymbiotic bacteria Wolbachia in two out of eight screened genetic lineages, we find no evidence of intraspecific genetic divergence caused by Wolbachia infections. The assignment of one of the genetic lineages to the nominal species could be made through morphological comparisons of specimens from the L. porosa type locality with the syntypes of L. obscura Thor, 1900. Thus, the diagnosis of L. porosa is emended and a neotype is defined. Two of the remaining genetic lineages could be assigned to existing names previously regarded as junior synonyms of L. porosa, namely L. obscura (lectotype defined here) and L. gibbosa Lundblad, 1926, which are both redescribed. The outstanding genetic lineages are unnamed, but from our work we conclude that the taxa Lebertia porosa britannica Thor, 1906, L. porosa dorsalis Thor, 1906, and L. porosa italica Thor, 1906 are nomina dubia that cannot be considered junior synonyms of L. porosa as proposed by K. Viets (1956). We also consider L. vigintimaculata Thor, 1900 a nomen dubium, probably identical to L. obscura.
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| first_indexed | 2024-12-10T14:44:21Z |
| format | Article |
| id | doaj.art-2da75f3e4ccc4718b98af0b36f55378a |
| institution | Directory Open Access Journal |
| issn | 2118-9773 |
| language | English |
| last_indexed | 2024-12-10T14:44:21Z |
| publishDate | 2022-09-01 |
| publisher | Consortium of European Natural History Museums |
| record_format | Article |
| series | European Journal of Taxonomy |
| spelling | doaj.art-2da75f3e4ccc4718b98af0b36f55378a2022-12-22T01:44:36ZengConsortium of European Natural History MuseumsEuropean Journal of Taxonomy2118-97732022-09-01836110.5852/ejt.2022.836.1921Disentangling the identity of Lebertia porosa Thor, 1900 using integrative taxonomy (Acari: Hydrachnidia)Valentina Tyukosova0Reinhard Gerecke1Elisabeth Stur2Torbjørn Ekrem3Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, NO-7491 Trondheim, NorwayUniversity of Tübingen, Faculty of Science, Department of Evolution and Ecology, DE-72074 Tübingen, GermanyDepartment of Natural History, NTNU University Museum, Norwegian University of Science and Technology, NO-7491 Trondheim, NorwayDepartment of Natural History, NTNU University Museum, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway Initial analyses of DNA barcode data from Norwegian populations attributed to the water mite Lebertia porosa Thor, 1900 revealed large genetic divergence and potentially cryptic species-level diversity. We used one mitochondrial (COI) and two nuclear markers (18S and 28S) as well as comparative morphological analysis to redefine Lebertia porosa, and to further investigate the species boundaries of Norwegian populations of its close relatives. Our results show that Lebertia porosa, as currently defined, consists of multiple species that can be separated by molecular and morphological characteristics. Although we document the presence of the endosymbiotic bacteria Wolbachia in two out of eight screened genetic lineages, we find no evidence of intraspecific genetic divergence caused by Wolbachia infections. The assignment of one of the genetic lineages to the nominal species could be made through morphological comparisons of specimens from the L. porosa type locality with the syntypes of L. obscura Thor, 1900. Thus, the diagnosis of L. porosa is emended and a neotype is defined. Two of the remaining genetic lineages could be assigned to existing names previously regarded as junior synonyms of L. porosa, namely L. obscura (lectotype defined here) and L. gibbosa Lundblad, 1926, which are both redescribed. The outstanding genetic lineages are unnamed, but from our work we conclude that the taxa Lebertia porosa britannica Thor, 1906, L. porosa dorsalis Thor, 1906, and L. porosa italica Thor, 1906 are nomina dubia that cannot be considered junior synonyms of L. porosa as proposed by K. Viets (1956). We also consider L. vigintimaculata Thor, 1900 a nomen dubium, probably identical to L. obscura. https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/1921cryptic speciesspecies delimitationWolbachianomenclature |
| spellingShingle | Valentina Tyukosova Reinhard Gerecke Elisabeth Stur Torbjørn Ekrem Disentangling the identity of Lebertia porosa Thor, 1900 using integrative taxonomy (Acari: Hydrachnidia) European Journal of Taxonomy cryptic species species delimitation Wolbachia nomenclature |
| title | Disentangling the identity of Lebertia porosa Thor, 1900 using integrative taxonomy (Acari: Hydrachnidia) |
| title_full | Disentangling the identity of Lebertia porosa Thor, 1900 using integrative taxonomy (Acari: Hydrachnidia) |
| title_fullStr | Disentangling the identity of Lebertia porosa Thor, 1900 using integrative taxonomy (Acari: Hydrachnidia) |
| title_full_unstemmed | Disentangling the identity of Lebertia porosa Thor, 1900 using integrative taxonomy (Acari: Hydrachnidia) |
| title_short | Disentangling the identity of Lebertia porosa Thor, 1900 using integrative taxonomy (Acari: Hydrachnidia) |
| title_sort | disentangling the identity of lebertia porosa thor 1900 using integrative taxonomy acari hydrachnidia |
| topic | cryptic species species delimitation Wolbachia nomenclature |
| url | https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/1921 |
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