The maritime shrew, Sorex maritimensis (Insectivora : Soricidae): a newly recognized Canadian endemic.
Previous morphological and cytological analyses have suggested that the arctic shrew (Sorex arcticus) as currently recognized may be two distinct species. Specifically, those studies demonstrated considerable differentiation between the putative subspecies S. a. maritimensis and one or both of the o...
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fttriple:oai:gotriple.eu:10670/1.3r0cka 2023-05-15T14:56:09+02:00 The maritime shrew, Sorex maritimensis (Insectivora : Soricidae): a newly recognized Canadian endemic. Stewart, D.T. Perry, N. D. Fumagalli, L. 2002-01-01 https://doi.org/10.1139/Z01-207 https://serval.unil.ch/notice/serval:BIB_6FE5237C3CC4 en eng doi:10.1139/Z01-207 10670/1.3r0cka https://serval.unil.ch/notice/serval:BIB_6FE5237C3CC4 undefined Serveur académique Lausannois Canadian Journal of Zoology, vol. 80, no. 1, pp. 94-99 envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2002 fttriple https://doi.org/10.1139/Z01-207 2023-01-22T18:52:06Z Previous morphological and cytological analyses have suggested that the arctic shrew (Sorex arcticus) as currently recognized may be two distinct species. Specifically, those studies demonstrated considerable differentiation between the putative subspecies S. a. maritimensis and one or both of the other two subspecies, S. a. arcticus and S. a. laricorum. Phylogenetic analysis of 546 base pairs of cytochrome b sequence data from 10 arctic shrews from across Canada indicates that maritimensis is the sister-group to arcticus + laricorum. Furthermore, there is considerable genetic divergence between maritimensis and the other two putative subspecies (similar to8-9%; Kimura's two-parameter distance). Given that maritimensis and arcticus + laricorum appear to be reciprocally monophyletic clades with considerable genetic divergence (i.e., greater than that between other recognized pairs of sister-species within the S. araneus-arcticus group), we propose that S. maritimensis be recognized as a distinct species. The proportion of third-position transversion substitutions between S. arcticus and S. maritimensis suggests that these two species shared a common ancestor approximately 2.4 million years ago. Article in Journal/Newspaper Arctic Unknown Arctic Canada Canadian Journal of Zoology 80 1 94 99 |
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envir geo Stewart, D.T. Perry, N. D. Fumagalli, L. The maritime shrew, Sorex maritimensis (Insectivora : Soricidae): a newly recognized Canadian endemic. |
topic_facet |
envir geo |
description |
Previous morphological and cytological analyses have suggested that the arctic shrew (Sorex arcticus) as currently recognized may be two distinct species. Specifically, those studies demonstrated considerable differentiation between the putative subspecies S. a. maritimensis and one or both of the other two subspecies, S. a. arcticus and S. a. laricorum. Phylogenetic analysis of 546 base pairs of cytochrome b sequence data from 10 arctic shrews from across Canada indicates that maritimensis is the sister-group to arcticus + laricorum. Furthermore, there is considerable genetic divergence between maritimensis and the other two putative subspecies (similar to8-9%; Kimura's two-parameter distance). Given that maritimensis and arcticus + laricorum appear to be reciprocally monophyletic clades with considerable genetic divergence (i.e., greater than that between other recognized pairs of sister-species within the S. araneus-arcticus group), we propose that S. maritimensis be recognized as a distinct species. The proportion of third-position transversion substitutions between S. arcticus and S. maritimensis suggests that these two species shared a common ancestor approximately 2.4 million years ago. |
format |
Article in Journal/Newspaper |
author |
Stewart, D.T. Perry, N. D. Fumagalli, L. |
author_facet |
Stewart, D.T. Perry, N. D. Fumagalli, L. |
author_sort |
Stewart, D.T. |
title |
The maritime shrew, Sorex maritimensis (Insectivora : Soricidae): a newly recognized Canadian endemic. |
title_short |
The maritime shrew, Sorex maritimensis (Insectivora : Soricidae): a newly recognized Canadian endemic. |
title_full |
The maritime shrew, Sorex maritimensis (Insectivora : Soricidae): a newly recognized Canadian endemic. |
title_fullStr |
The maritime shrew, Sorex maritimensis (Insectivora : Soricidae): a newly recognized Canadian endemic. |
title_full_unstemmed |
The maritime shrew, Sorex maritimensis (Insectivora : Soricidae): a newly recognized Canadian endemic. |
title_sort |
maritime shrew, sorex maritimensis (insectivora : soricidae): a newly recognized canadian endemic. |
publishDate |
2002 |
url |
https://doi.org/10.1139/Z01-207 https://serval.unil.ch/notice/serval:BIB_6FE5237C3CC4 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Serveur académique Lausannois Canadian Journal of Zoology, vol. 80, no. 1, pp. 94-99 |
op_relation |
doi:10.1139/Z01-207 10670/1.3r0cka https://serval.unil.ch/notice/serval:BIB_6FE5237C3CC4 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1139/Z01-207 |
container_title |
Canadian Journal of Zoology |
container_volume |
80 |
container_issue |
1 |
container_start_page |
94 |
op_container_end_page |
99 |
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1766328180385251328 |