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...
Published in: | Canadian Journal of Zoology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2002
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/z01-207 http://www.nrcresearchpress.com/doi/pdf/10.1139/z01-207 |
id |
crcansciencepubl:10.1139/z01-207 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/z01-207 2024-04-28T08:08:49+00:00 The maritime shrew, Sorex maritimensis (Insectivora: Soricidae): a newly recognized Canadian endemic Stewart, Donald T Perry, Neil D Fumagalli, Luca 2002 http://dx.doi.org/10.1139/z01-207 http://www.nrcresearchpress.com/doi/pdf/10.1139/z01-207 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 80, issue 1, page 94-99 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2002 crcansciencepubl https://doi.org/10.1139/z01-207 2024-04-09T06:56:27Z 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 (~89%; 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. araneusarcticus 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 Canadian Science Publishing Canadian Journal of Zoology 80 1 94 99 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Stewart, Donald T Perry, Neil D Fumagalli, Luca The maritime shrew, Sorex maritimensis (Insectivora: Soricidae): a newly recognized Canadian endemic |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
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 (~89%; 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. araneusarcticus 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, Donald T Perry, Neil D Fumagalli, Luca |
author_facet |
Stewart, Donald T Perry, Neil D Fumagalli, Luca |
author_sort |
Stewart, Donald 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 |
publisher |
Canadian Science Publishing |
publishDate |
2002 |
url |
http://dx.doi.org/10.1139/z01-207 http://www.nrcresearchpress.com/doi/pdf/10.1139/z01-207 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Canadian Journal of Zoology volume 80, issue 1, page 94-99 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
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 |
_version_ |
1797577428041728000 |