Evolutionary geographic relationships among orthocladine chironomid midges from maritime Antarctic and sub-Antarctic islands
Two species of chironomid midges are currently described in the genus Belgica Jacobs, 1900. Belgica antarctica Jacobs, 1900 is endemic to parts of the maritime Antarctic, and Belgica albipes (Séguy, 1965) is endemic to Îles Crozet, a sub-Antarctic archipelago in the southern Indian Ocean. The relati...
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ftnerc:oai:nora.nerc.ac.uk:18010 2024-02-11T09:57:44+01:00 Evolutionary geographic relationships among orthocladine chironomid midges from maritime Antarctic and sub-Antarctic islands Allegrucci, Giuliana Carchini, Gianmaria Convey, Peter Sbordoni, Valerio 2012 http://nora.nerc.ac.uk/id/eprint/18010/ unknown The Linnean Society of London Allegrucci, Giuliana; Carchini, Gianmaria; Convey, Peter orcid:0000-0001-8497-9903 Sbordoni, Valerio. 2012 Evolutionary geographic relationships among orthocladine chironomid midges from maritime Antarctic and sub-Antarctic islands. Biological Journal of the Linnean Society, 106 (2). 258-274. https://doi.org/10.1111/j.1095-8312.2012.01864.x <https://doi.org/10.1111/j.1095-8312.2012.01864.x> Publication - Article PeerReviewed 2012 ftnerc https://doi.org/10.1111/j.1095-8312.2012.01864.x 2024-01-26T00:03:20Z Two species of chironomid midges are currently described in the genus Belgica Jacobs, 1900. Belgica antarctica Jacobs, 1900 is endemic to parts of the maritime Antarctic, and Belgica albipes (Séguy, 1965) is endemic to Îles Crozet, a sub-Antarctic archipelago in the southern Indian Ocean. The relationships between these species, and their closest known relative (Eretmoptera murphyi Schaeffer, 1914, endemic to sub-Antarctic South Georgia), were examined by sequencing DNA fragments for domains 1 and 3–5 of 28S ribosomal DNA and the mitochondrial gene cytochrome c oxidase 1 (cox1). The resulting molecular relationships between the three species were unclear, although their position within the subfamily Orthocladiinae of the Chironomidae, as generated by classical taxonomy, was confirmed. Our data reinforce earlier doubts, based on classical morphological approaches, that the generic placement of E. murphyi may be incorrect. Further analyses may indeed confirm that the species represents a third member of the genus Belgica. Genetic distance analysis, limited to the barcode region of cox1, indicated high differentiation between the two populations of B. albipes sampled (one obtained from the type location), suggesting the likely presence of cryptic species within this taxon, and that the taxonomic status of this species should be revised. Analysis of cox1 sequences in B. antarctica highlighted a strong genetic structure between populations obtained from 12 locations along the Antarctic Peninsula and the South Shetland Islands archipelago, with a number of distinctive mtDNA lineages inhabiting geographically distinct areas. In particular, we found four different haplogroups constituting geographically close but genetically distinct populations, a pattern likely to have been encouraged by the brachyptery of the members of this genus. We suggest that the different genetic patterns shown by each haplogroup have probably been determined by historical dispersal and colonization events during the Pleistocene, and are ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Belgica albipes Belgica antarctica Îles Crozet South Shetland Islands Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula Indian South Shetland Islands The Antarctic Biological Journal of the Linnean Society 106 2 258 274 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
Two species of chironomid midges are currently described in the genus Belgica Jacobs, 1900. Belgica antarctica Jacobs, 1900 is endemic to parts of the maritime Antarctic, and Belgica albipes (Séguy, 1965) is endemic to Îles Crozet, a sub-Antarctic archipelago in the southern Indian Ocean. The relationships between these species, and their closest known relative (Eretmoptera murphyi Schaeffer, 1914, endemic to sub-Antarctic South Georgia), were examined by sequencing DNA fragments for domains 1 and 3–5 of 28S ribosomal DNA and the mitochondrial gene cytochrome c oxidase 1 (cox1). The resulting molecular relationships between the three species were unclear, although their position within the subfamily Orthocladiinae of the Chironomidae, as generated by classical taxonomy, was confirmed. Our data reinforce earlier doubts, based on classical morphological approaches, that the generic placement of E. murphyi may be incorrect. Further analyses may indeed confirm that the species represents a third member of the genus Belgica. Genetic distance analysis, limited to the barcode region of cox1, indicated high differentiation between the two populations of B. albipes sampled (one obtained from the type location), suggesting the likely presence of cryptic species within this taxon, and that the taxonomic status of this species should be revised. Analysis of cox1 sequences in B. antarctica highlighted a strong genetic structure between populations obtained from 12 locations along the Antarctic Peninsula and the South Shetland Islands archipelago, with a number of distinctive mtDNA lineages inhabiting geographically distinct areas. In particular, we found four different haplogroups constituting geographically close but genetically distinct populations, a pattern likely to have been encouraged by the brachyptery of the members of this genus. We suggest that the different genetic patterns shown by each haplogroup have probably been determined by historical dispersal and colonization events during the Pleistocene, and are ... |
format |
Article in Journal/Newspaper |
author |
Allegrucci, Giuliana Carchini, Gianmaria Convey, Peter Sbordoni, Valerio |
spellingShingle |
Allegrucci, Giuliana Carchini, Gianmaria Convey, Peter Sbordoni, Valerio Evolutionary geographic relationships among orthocladine chironomid midges from maritime Antarctic and sub-Antarctic islands |
author_facet |
Allegrucci, Giuliana Carchini, Gianmaria Convey, Peter Sbordoni, Valerio |
author_sort |
Allegrucci, Giuliana |
title |
Evolutionary geographic relationships among orthocladine chironomid midges from maritime Antarctic and sub-Antarctic islands |
title_short |
Evolutionary geographic relationships among orthocladine chironomid midges from maritime Antarctic and sub-Antarctic islands |
title_full |
Evolutionary geographic relationships among orthocladine chironomid midges from maritime Antarctic and sub-Antarctic islands |
title_fullStr |
Evolutionary geographic relationships among orthocladine chironomid midges from maritime Antarctic and sub-Antarctic islands |
title_full_unstemmed |
Evolutionary geographic relationships among orthocladine chironomid midges from maritime Antarctic and sub-Antarctic islands |
title_sort |
evolutionary geographic relationships among orthocladine chironomid midges from maritime antarctic and sub-antarctic islands |
publisher |
The Linnean Society of London |
publishDate |
2012 |
url |
http://nora.nerc.ac.uk/id/eprint/18010/ |
geographic |
Antarctic Antarctic Peninsula Indian South Shetland Islands The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Indian South Shetland Islands The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Belgica albipes Belgica antarctica Îles Crozet South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Belgica albipes Belgica antarctica Îles Crozet South Shetland Islands |
op_relation |
Allegrucci, Giuliana; Carchini, Gianmaria; Convey, Peter orcid:0000-0001-8497-9903 Sbordoni, Valerio. 2012 Evolutionary geographic relationships among orthocladine chironomid midges from maritime Antarctic and sub-Antarctic islands. Biological Journal of the Linnean Society, 106 (2). 258-274. https://doi.org/10.1111/j.1095-8312.2012.01864.x <https://doi.org/10.1111/j.1095-8312.2012.01864.x> |
op_doi |
https://doi.org/10.1111/j.1095-8312.2012.01864.x |
container_title |
Biological Journal of the Linnean Society |
container_volume |
106 |
container_issue |
2 |
container_start_page |
258 |
op_container_end_page |
274 |
_version_ |
1790593284982177792 |