Phylogenetic relationship within Cumacea (Crustacea: Peracarida) and genetic variability of two Antarctic species of the family Leuconidae
Phylogenetic hypotheses for the peracarid order Cumacea are scarce and have not provided a solution to the full extent. In the present study, a fragment of the mitochondrial 16S rDNA was used to erect a phylogenetic hypothesis for three cumacean families, Diastylidae, Bodotriidae and Leuconidae, alo...
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ftsouthampton:oai:eprints.soton.ac.uk:446175 2023-12-03T10:13:10+01:00 Phylogenetic relationship within Cumacea (Crustacea: Peracarida) and genetic variability of two Antarctic species of the family Leuconidae Rehm, Peter Thatje, Sven Leese, Florian Held, Christoph 2020-12-11 text https://eprints.soton.ac.uk/446175/ https://eprints.soton.ac.uk/446175/1/1873_Article_Text_7155_2_10_20201210.pdf en English eng https://eprints.soton.ac.uk/446175/1/1873_Article_Text_7155_2_10_20201210.pdf Rehm, Peter, Thatje, Sven, Leese, Florian and Held, Christoph (2020) Phylogenetic relationship within Cumacea (Crustacea: Peracarida) and genetic variability of two Antarctic species of the family Leuconidae. Scientia Marina, 84 (4), 385-392. (doi:10.3989/scimar.05053.17A <http://dx.doi.org/10.3989/scimar.05053.17A>). cc_by_4 Article PeerReviewed 2020 ftsouthampton https://doi.org/10.3989/scimar.05053.17A 2023-11-03T00:00:19Z Phylogenetic hypotheses for the peracarid order Cumacea are scarce and have not provided a solution to the full extent. In the present study, a fragment of the mitochondrial 16S rDNA was used to erect a phylogenetic hypothesis for three cumacean families, Diastylidae, Bodotriidae and Leuconidae, along with intra-family relationships of the latter. The Cumacea resolved monophyletic with tanaids and isopods as outgroup taxa. The Diastylidae were the only family with good support for monophyly. The genus Leucon resolved paraphyletic, whereas the subgenus Crymoleucon was monophyletic. Furthermore, the genetic structure was analysed for two leuconid species, Leucon antarcticus Zimmer, 1907 and L. intermedius Mühlenhardt-Siegel, 1996, from the Weddell Sea and the Ross Sea. The two species showed different patterns of intraspecific genetic variability. In contrast to L. intermedius, a bimodal distribution of pairwise genetic distances was observed for L. antarcticus, which is correlated with geographical and depth distributions between the Ross Sea and the Weddell Sea. Although a clear evaluation of cryptic speciation in these species requires additional work on more specimens from more geographic regions and broader depth ranges, differences shown in the sequences of 16S rDNA can only be explained by genetic separation of populations between the Weddell Sea and the Ross Sea for an extended period of time. Article in Journal/Newspaper Antarc* Antarctic antarcticus Ross Sea Weddell Sea University of Southampton: e-Prints Soton Antarctic Weddell Sea Ross Sea Weddell Scientia Marina 84 4 385 392 |
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Open Polar |
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University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Phylogenetic hypotheses for the peracarid order Cumacea are scarce and have not provided a solution to the full extent. In the present study, a fragment of the mitochondrial 16S rDNA was used to erect a phylogenetic hypothesis for three cumacean families, Diastylidae, Bodotriidae and Leuconidae, along with intra-family relationships of the latter. The Cumacea resolved monophyletic with tanaids and isopods as outgroup taxa. The Diastylidae were the only family with good support for monophyly. The genus Leucon resolved paraphyletic, whereas the subgenus Crymoleucon was monophyletic. Furthermore, the genetic structure was analysed for two leuconid species, Leucon antarcticus Zimmer, 1907 and L. intermedius Mühlenhardt-Siegel, 1996, from the Weddell Sea and the Ross Sea. The two species showed different patterns of intraspecific genetic variability. In contrast to L. intermedius, a bimodal distribution of pairwise genetic distances was observed for L. antarcticus, which is correlated with geographical and depth distributions between the Ross Sea and the Weddell Sea. Although a clear evaluation of cryptic speciation in these species requires additional work on more specimens from more geographic regions and broader depth ranges, differences shown in the sequences of 16S rDNA can only be explained by genetic separation of populations between the Weddell Sea and the Ross Sea for an extended period of time. |
format |
Article in Journal/Newspaper |
author |
Rehm, Peter Thatje, Sven Leese, Florian Held, Christoph |
spellingShingle |
Rehm, Peter Thatje, Sven Leese, Florian Held, Christoph Phylogenetic relationship within Cumacea (Crustacea: Peracarida) and genetic variability of two Antarctic species of the family Leuconidae |
author_facet |
Rehm, Peter Thatje, Sven Leese, Florian Held, Christoph |
author_sort |
Rehm, Peter |
title |
Phylogenetic relationship within Cumacea (Crustacea: Peracarida) and genetic variability of two Antarctic species of the family Leuconidae |
title_short |
Phylogenetic relationship within Cumacea (Crustacea: Peracarida) and genetic variability of two Antarctic species of the family Leuconidae |
title_full |
Phylogenetic relationship within Cumacea (Crustacea: Peracarida) and genetic variability of two Antarctic species of the family Leuconidae |
title_fullStr |
Phylogenetic relationship within Cumacea (Crustacea: Peracarida) and genetic variability of two Antarctic species of the family Leuconidae |
title_full_unstemmed |
Phylogenetic relationship within Cumacea (Crustacea: Peracarida) and genetic variability of two Antarctic species of the family Leuconidae |
title_sort |
phylogenetic relationship within cumacea (crustacea: peracarida) and genetic variability of two antarctic species of the family leuconidae |
publishDate |
2020 |
url |
https://eprints.soton.ac.uk/446175/ https://eprints.soton.ac.uk/446175/1/1873_Article_Text_7155_2_10_20201210.pdf |
geographic |
Antarctic Weddell Sea Ross Sea Weddell |
geographic_facet |
Antarctic Weddell Sea Ross Sea Weddell |
genre |
Antarc* Antarctic antarcticus Ross Sea Weddell Sea |
genre_facet |
Antarc* Antarctic antarcticus Ross Sea Weddell Sea |
op_relation |
https://eprints.soton.ac.uk/446175/1/1873_Article_Text_7155_2_10_20201210.pdf Rehm, Peter, Thatje, Sven, Leese, Florian and Held, Christoph (2020) Phylogenetic relationship within Cumacea (Crustacea: Peracarida) and genetic variability of two Antarctic species of the family Leuconidae. Scientia Marina, 84 (4), 385-392. (doi:10.3989/scimar.05053.17A <http://dx.doi.org/10.3989/scimar.05053.17A>). |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.3989/scimar.05053.17A |
container_title |
Scientia Marina |
container_volume |
84 |
container_issue |
4 |
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385 |
op_container_end_page |
392 |
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1784259868016771072 |