Diversity and zoogeography of Brachycera (Diptera) in disjunct grasslands of the southern Yukon
The diversity and zoogeography of Diptera (Brachycera) of disjunct xeric grasslands in the southern Yukon were studied. Over 20,000 flies were collected representing 32 families and 213 species. In terms of abundance, the predacious guild dominated (54% of total specimens) due mostly to the family C...
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McGill University
1998
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ftcanadathes:oai:collectionscanada.gc.ca:QMM.21515 2023-05-15T18:49:28+02:00 Diversity and zoogeography of Brachycera (Diptera) in disjunct grasslands of the southern Yukon Boucher, Stéphanie, 1974- Wheeler, T. A. (advisor) Master of Science (Department of Natural Resource Sciences.) 1998 application/pdf http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21515 en eng McGill University alephsysno: 001657762 proquestno: MQ50724 Theses scanned by UMI/ProQuest. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21515 All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. Diptera -- Yukon Grasslands -- Yukon Electronic Thesis or Dissertation 1998 ftcanadathes 2014-02-16T00:47:26Z The diversity and zoogeography of Diptera (Brachycera) of disjunct xeric grasslands in the southern Yukon were studied. Over 20,000 flies were collected representing 32 families and 213 species. In terms of abundance, the predacious guild dominated (54% of total specimens) due mostly to the family Chamaemyiidae which represented 45% of all specimens. In terms of diversity, the phytophagous and parasitoid guilds were dominant (25.5% of total species each). The most diverse families were Agromyzidae (32 species), Chloropidae (31 species), Tachinidae (23 species) and Pipunculidae (20 species). Thirty-four undescribed species were collected and 58 species were recorded for the first time in the Yukon. Zoogeographic analysis indicates that the Diptera fauna of these grasslands is dominated by widespread Nearctic or Holarctic species, but the fauna also includes southern grassland species with disjunct distributions, and species endemic to Beringia. The presence of endemic and disjunct species suggests that these grasslands were present in Beringia during the Wisconsinan and acted as a refugium for grassland Diptera. Thesis Beringia Yukon Theses Canada/Thèses Canada (Library and Archives Canada) Yukon |
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Open Polar |
collection |
Theses Canada/Thèses Canada (Library and Archives Canada) |
op_collection_id |
ftcanadathes |
language |
English |
topic |
Diptera -- Yukon Grasslands -- Yukon |
spellingShingle |
Diptera -- Yukon Grasslands -- Yukon Boucher, Stéphanie, 1974- Diversity and zoogeography of Brachycera (Diptera) in disjunct grasslands of the southern Yukon |
topic_facet |
Diptera -- Yukon Grasslands -- Yukon |
description |
The diversity and zoogeography of Diptera (Brachycera) of disjunct xeric grasslands in the southern Yukon were studied. Over 20,000 flies were collected representing 32 families and 213 species. In terms of abundance, the predacious guild dominated (54% of total specimens) due mostly to the family Chamaemyiidae which represented 45% of all specimens. In terms of diversity, the phytophagous and parasitoid guilds were dominant (25.5% of total species each). The most diverse families were Agromyzidae (32 species), Chloropidae (31 species), Tachinidae (23 species) and Pipunculidae (20 species). Thirty-four undescribed species were collected and 58 species were recorded for the first time in the Yukon. Zoogeographic analysis indicates that the Diptera fauna of these grasslands is dominated by widespread Nearctic or Holarctic species, but the fauna also includes southern grassland species with disjunct distributions, and species endemic to Beringia. The presence of endemic and disjunct species suggests that these grasslands were present in Beringia during the Wisconsinan and acted as a refugium for grassland Diptera. |
author2 |
Wheeler, T. A. (advisor) |
format |
Thesis |
author |
Boucher, Stéphanie, 1974- |
author_facet |
Boucher, Stéphanie, 1974- |
author_sort |
Boucher, Stéphanie, 1974- |
title |
Diversity and zoogeography of Brachycera (Diptera) in disjunct grasslands of the southern Yukon |
title_short |
Diversity and zoogeography of Brachycera (Diptera) in disjunct grasslands of the southern Yukon |
title_full |
Diversity and zoogeography of Brachycera (Diptera) in disjunct grasslands of the southern Yukon |
title_fullStr |
Diversity and zoogeography of Brachycera (Diptera) in disjunct grasslands of the southern Yukon |
title_full_unstemmed |
Diversity and zoogeography of Brachycera (Diptera) in disjunct grasslands of the southern Yukon |
title_sort |
diversity and zoogeography of brachycera (diptera) in disjunct grasslands of the southern yukon |
publisher |
McGill University |
publishDate |
1998 |
url |
http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21515 |
op_coverage |
Master of Science (Department of Natural Resource Sciences.) |
geographic |
Yukon |
geographic_facet |
Yukon |
genre |
Beringia Yukon |
genre_facet |
Beringia Yukon |
op_relation |
alephsysno: 001657762 proquestno: MQ50724 Theses scanned by UMI/ProQuest. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21515 |
op_rights |
All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
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1766243065001934848 |