Species delimitation in northern European water scavenger beetles of the genus Hydrobius (Coleoptera, Hydrophilidae)
The chiefly Holarctic Hydrobius species complex (Coleoptera, Hydrophilidae) currently consists of H. arcticus Kuwert, 1890, and three morphological variants of H. fuscipes (Linnaeus, 1758): var. fuscipes, var. rottenbergii and var. subrotundus in northern Europe. Here molecular and morphological dat...
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2016
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-118276 https://doi.org/10.3897/zookeys.564.6558 |
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ftumeauniv:oai:DiVA.org:umu-118276 2023-10-09T21:51:27+02:00 Species delimitation in northern European water scavenger beetles of the genus Hydrobius (Coleoptera, Hydrophilidae) Fossen, Erlend I. Ekrem, Torbjørn Nilsson, Anders N Bergsten, Johannes 2016 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-118276 https://doi.org/10.3897/zookeys.564.6558 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap ZooKeys, 1313-2989, 2016, 564, s. 71-120 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-118276 doi:10.3897/zookeys.564.6558 ISI:000370337300004 Scopus 2-s2.0-84962419495 info:eu-repo/semantics/openAccess GMYC species complex BPP guide tree Fennoscandia morphometrics Bayesian genitalia lecular phylogeny species boundaries morphology cryptic species integrative taxonomy DNA rcoding identification key taxonomy checklist Zoology Zoologi Article in journal info:eu-repo/semantics/article text 2016 ftumeauniv https://doi.org/10.3897/zookeys.564.6558 2023-09-22T13:59:05Z The chiefly Holarctic Hydrobius species complex (Coleoptera, Hydrophilidae) currently consists of H. arcticus Kuwert, 1890, and three morphological variants of H. fuscipes (Linnaeus, 1758): var. fuscipes, var. rottenbergii and var. subrotundus in northern Europe. Here molecular and morphological data are used to test the species boundaries in this species complex. Three gene segments (COI, H3 and ITS2) were sequenced and analyzed with Bayesian methods to infer phylogenetic relationships. The Generalized Mixed Yule Coalescent (GMYC) model and two versions of the Bayesian species delimitation method BPP, with or without an a priori defined guide tree (v2.2 & v3.0), were used to evaluate species limits. External and male genital characters of primarily Fennoscandian specimens were measured and statistically analyzed to test for significant differences in quantitative morphological characters. The four morphotypes formed separate genetic clusters on gene trees and were delimited as separate species by GMYC and by both versions of BPP, despite specimens of H. f. var. fuscipes and H. f. var. subrotundus being sympatric. H. arcticus and H. f. var. rottenbergii could only be separated genetically with ITS2, and were delimited statistically with GMYC on ITS2 and with BPP on the combined data. In addition, six or seven potentially cryptic species of the H. fuscipes complex from regions outside northern Europe were delimited genetically. Although some overlap was found, the mean values of six male genital characters were significantly different between the morphotypes (p < 0.001). Morphological characters previously presumed to be diagnostic were less reliable to separate H. f. var. fuscipes from H. f. var. subrotundus, but characters in the literature for H. arcticus and H. f. var. rottenbergii were diagnostic. Overall, morphological and molecular evidence strongly suggest that H. arcticus and the three morphological variants of H. fuscipes are separate species and Hydrobius rottenbergii Gerhardt, 1872, stat. n. ... Article in Journal/Newspaper Fennoscandia Fennoscandian Umeå University: Publications (DiVA) ZooKeys 564 71 120 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
GMYC species complex BPP guide tree Fennoscandia morphometrics Bayesian genitalia lecular phylogeny species boundaries morphology cryptic species integrative taxonomy DNA rcoding identification key taxonomy checklist Zoology Zoologi |
spellingShingle |
GMYC species complex BPP guide tree Fennoscandia morphometrics Bayesian genitalia lecular phylogeny species boundaries morphology cryptic species integrative taxonomy DNA rcoding identification key taxonomy checklist Zoology Zoologi Fossen, Erlend I. Ekrem, Torbjørn Nilsson, Anders N Bergsten, Johannes Species delimitation in northern European water scavenger beetles of the genus Hydrobius (Coleoptera, Hydrophilidae) |
topic_facet |
GMYC species complex BPP guide tree Fennoscandia morphometrics Bayesian genitalia lecular phylogeny species boundaries morphology cryptic species integrative taxonomy DNA rcoding identification key taxonomy checklist Zoology Zoologi |
description |
The chiefly Holarctic Hydrobius species complex (Coleoptera, Hydrophilidae) currently consists of H. arcticus Kuwert, 1890, and three morphological variants of H. fuscipes (Linnaeus, 1758): var. fuscipes, var. rottenbergii and var. subrotundus in northern Europe. Here molecular and morphological data are used to test the species boundaries in this species complex. Three gene segments (COI, H3 and ITS2) were sequenced and analyzed with Bayesian methods to infer phylogenetic relationships. The Generalized Mixed Yule Coalescent (GMYC) model and two versions of the Bayesian species delimitation method BPP, with or without an a priori defined guide tree (v2.2 & v3.0), were used to evaluate species limits. External and male genital characters of primarily Fennoscandian specimens were measured and statistically analyzed to test for significant differences in quantitative morphological characters. The four morphotypes formed separate genetic clusters on gene trees and were delimited as separate species by GMYC and by both versions of BPP, despite specimens of H. f. var. fuscipes and H. f. var. subrotundus being sympatric. H. arcticus and H. f. var. rottenbergii could only be separated genetically with ITS2, and were delimited statistically with GMYC on ITS2 and with BPP on the combined data. In addition, six or seven potentially cryptic species of the H. fuscipes complex from regions outside northern Europe were delimited genetically. Although some overlap was found, the mean values of six male genital characters were significantly different between the morphotypes (p < 0.001). Morphological characters previously presumed to be diagnostic were less reliable to separate H. f. var. fuscipes from H. f. var. subrotundus, but characters in the literature for H. arcticus and H. f. var. rottenbergii were diagnostic. Overall, morphological and molecular evidence strongly suggest that H. arcticus and the three morphological variants of H. fuscipes are separate species and Hydrobius rottenbergii Gerhardt, 1872, stat. n. ... |
format |
Article in Journal/Newspaper |
author |
Fossen, Erlend I. Ekrem, Torbjørn Nilsson, Anders N Bergsten, Johannes |
author_facet |
Fossen, Erlend I. Ekrem, Torbjørn Nilsson, Anders N Bergsten, Johannes |
author_sort |
Fossen, Erlend I. |
title |
Species delimitation in northern European water scavenger beetles of the genus Hydrobius (Coleoptera, Hydrophilidae) |
title_short |
Species delimitation in northern European water scavenger beetles of the genus Hydrobius (Coleoptera, Hydrophilidae) |
title_full |
Species delimitation in northern European water scavenger beetles of the genus Hydrobius (Coleoptera, Hydrophilidae) |
title_fullStr |
Species delimitation in northern European water scavenger beetles of the genus Hydrobius (Coleoptera, Hydrophilidae) |
title_full_unstemmed |
Species delimitation in northern European water scavenger beetles of the genus Hydrobius (Coleoptera, Hydrophilidae) |
title_sort |
species delimitation in northern european water scavenger beetles of the genus hydrobius (coleoptera, hydrophilidae) |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2016 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-118276 https://doi.org/10.3897/zookeys.564.6558 |
genre |
Fennoscandia Fennoscandian |
genre_facet |
Fennoscandia Fennoscandian |
op_relation |
ZooKeys, 1313-2989, 2016, 564, s. 71-120 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-118276 doi:10.3897/zookeys.564.6558 ISI:000370337300004 Scopus 2-s2.0-84962419495 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3897/zookeys.564.6558 |
container_title |
ZooKeys |
container_volume |
564 |
container_start_page |
71 |
op_container_end_page |
120 |
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1779314553057705984 |