A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae)
The West European species of Boreonectes Angus, 2010 are reviewed. B. multilineatus (Falkenström, 1922) is shown to be widely distributed in the Pyrenees, where it is the only species known to occur. The chromosomes of all five west European species are found to have, in addition their different num...
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ftdoajarticles:oai:doaj.org/article:a6b0e54e99f24cf29871af4302a3bd23 2023-05-15T15:09:42+02:00 A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae) Robert B. Angus 2021-01-01T00:00:00Z https://doi.org/10.3897/compcytogen.v15.i1.60188 https://doaj.org/article/a6b0e54e99f24cf29871af4302a3bd23 EN eng Pensoft Publishers https://compcytogen.pensoft.net/article/60188/download/pdf/ https://compcytogen.pensoft.net/article/60188/download/xml/ https://compcytogen.pensoft.net/article/60188/ https://doaj.org/toc/1993-078X doi:10.3897/compcytogen.v15.i1.60188 1993-078X https://doaj.org/article/a6b0e54e99f24cf29871af4302a3bd23 Comparative Cytogenetics, Vol 15, Iss 1, Pp 23-39 (2021) Genetics QH426-470 article 2021 ftdoajarticles https://doi.org/10.3897/compcytogen.v15.i1.60188 2022-12-31T05:58:50Z The West European species of Boreonectes Angus, 2010 are reviewed. B. multilineatus (Falkenström, 1922) is shown to be widely distributed in the Pyrenees, where it is the only species known to occur. The chromosomes of all five west European species are found to have, in addition their different numbers of chromosomes, differences in the number and locations of secondary constrictions, and in some cases, the number of chromosomes with clear centromeric C-bands. The level of differences between the chromosomes of the species is in stark contrast with the very slight genetic (DNA) differences between them and this suggests that chromosome differentiation may have been a driver of speciation. Two of the species, B. griseostriatus (De Geer, 1774) and B. multilineatus, have distributions extending northwards as far as Arctic Scandinavia. It is pointed out that, while these northern areas now constitute the major portions of their ranges, they must be of fairly recent origins as most of the area would have been covered by ice sheets and therefore not habitable during the glacial maximum of the Last Glaciation. This contrasts with the situation in the area of the Central European mountains where fossil faunas, including Boreonectes, are known. B. griseostriatus, identifiable to species by its parameres, was present in the Woolly Rhinoceros site at Starunia in the Western Ukraine, and this fauna is discussed as well as an English fauna of similar age. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Comparative Cytogenetics 15 1 23 39 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Genetics QH426-470 |
spellingShingle |
Genetics QH426-470 Robert B. Angus A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae) |
topic_facet |
Genetics QH426-470 |
description |
The West European species of Boreonectes Angus, 2010 are reviewed. B. multilineatus (Falkenström, 1922) is shown to be widely distributed in the Pyrenees, where it is the only species known to occur. The chromosomes of all five west European species are found to have, in addition their different numbers of chromosomes, differences in the number and locations of secondary constrictions, and in some cases, the number of chromosomes with clear centromeric C-bands. The level of differences between the chromosomes of the species is in stark contrast with the very slight genetic (DNA) differences between them and this suggests that chromosome differentiation may have been a driver of speciation. Two of the species, B. griseostriatus (De Geer, 1774) and B. multilineatus, have distributions extending northwards as far as Arctic Scandinavia. It is pointed out that, while these northern areas now constitute the major portions of their ranges, they must be of fairly recent origins as most of the area would have been covered by ice sheets and therefore not habitable during the glacial maximum of the Last Glaciation. This contrasts with the situation in the area of the Central European mountains where fossil faunas, including Boreonectes, are known. B. griseostriatus, identifiable to species by its parameres, was present in the Woolly Rhinoceros site at Starunia in the Western Ukraine, and this fauna is discussed as well as an English fauna of similar age. |
format |
Article in Journal/Newspaper |
author |
Robert B. Angus |
author_facet |
Robert B. Angus |
author_sort |
Robert B. Angus |
title |
A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae) |
title_short |
A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae) |
title_full |
A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae) |
title_fullStr |
A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae) |
title_full_unstemmed |
A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae) |
title_sort |
re-examination of the west european species of boreonectes angus, 2010, with particular reference to b. multilineatus (falkenström, 1922) (coleoptera, dytiscidae) |
publisher |
Pensoft Publishers |
publishDate |
2021 |
url |
https://doi.org/10.3897/compcytogen.v15.i1.60188 https://doaj.org/article/a6b0e54e99f24cf29871af4302a3bd23 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Comparative Cytogenetics, Vol 15, Iss 1, Pp 23-39 (2021) |
op_relation |
https://compcytogen.pensoft.net/article/60188/download/pdf/ https://compcytogen.pensoft.net/article/60188/download/xml/ https://compcytogen.pensoft.net/article/60188/ https://doaj.org/toc/1993-078X doi:10.3897/compcytogen.v15.i1.60188 1993-078X https://doaj.org/article/a6b0e54e99f24cf29871af4302a3bd23 |
op_doi |
https://doi.org/10.3897/compcytogen.v15.i1.60188 |
container_title |
Comparative Cytogenetics |
container_volume |
15 |
container_issue |
1 |
container_start_page |
23 |
op_container_end_page |
39 |
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1766340839607369728 |