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Permanent link (DOI): https://doi.org/10.7939/R3F031

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Theses and Dissertations

Aspects of archipine evolution (Lepidoptera: Tortricidae) Open Access

Descriptions

Other title
Subject/Keyword
Tortricidae -- Evolution
Tortricidae -- Classification
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Dombroskie, Jason
Supervisor and department
Sperling, Felix (Biological Sciences)
Examining committee member and department
Brown, Richard (Mississippi State University)
Murray, Alison (Department of Biological Sciences)
Proctor, Heather (Department of Biological Sciences)
Dosdall, Lloyd, (Agricultural, Food and Nutritional Science)
Department
Department of Biological Sciences
Specialization

Date accepted
2011-04-06T22:13:02Z
Graduation date
2011-06
Degree
Doctor of Philosophy
Degree level
Doctoral
Abstract
The economically important tribe Archipini (Lepidoptera: Tortricidae) has posed many taxonomic challenges, ranging from species and generic boundaries to their overall phylogeny. In Chapter 2, the species Clepsis anderslaneyii Dombroskie & Brown 2009, is described based upon material from southeastern Arizona, helping to complete our knowledge of the Nearctic archipine fauna. In Chapter 3, I apply an iterative approach utilizing morphological, molecular, and geographical evidence to test the species boundaries of the Pandemis limitata (Robinson) group. None of these character suites alone fully supported the species boundaries; however, in combination they successfully differentiated most specimens and for that reason I maintain the three separate species. Generic boundaries and putative synapomorphies of the genus Pandemis are examined using COI and ITS2 DNA. Definitive conclusions were precluded by weak phylogenetic support and losses of major structures in some taxa. In Chapter 4, a molecular phylogeny of the Archipini is presented, based on phylogenetic analysis of 28S and COI DNA for 134 species in 33 genera. It shows an Australasian origin for the tribe, with subsequent radiations into the rest of the Old World, and later the New World. Through tests for correlated evolution and total correlation, I examine factors that may facilitate the loss of secondary sexual characters (SSCs). SSCs are more frequently lost when host plant range is narrowed and when taxa radiated into the New World, but novel SSCs do not significantly replace existing SSCs. In Chapter 5, the need for accurate higher-level identifications is addressed in a user-friendly, interactive, matrix-based key to the Lepidoptera of Canada. It covers 222 taxon groups, using 73 characters with 266 states including many characters, like measurements and ratios, that are difficult to quantify using a dichotomous key. It works best with the traditionally challenging microlepidoptera and now provides a new gateway to their identification. Overall, this thesis proposes taxonomic changes for many pest and related species, and furthers a deeper understanding of their evolution.
Language
English
DOI
doi:10.7939/R3F031
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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