NDLI: A molecular phylogenetic analysis of Speyeria and its implications for the management of the threatened Speyeria zerene hippolyta

Content Provider	Springer Nature Link
Author	McHugh, Anne Bierzychudek, Paulette Greever, Christina Marzulla, Tessa Van Buskirk, Richard Binford, Greta
Copyright Year	2013
Abstract	The genetic structure of lineages can provide important information for delineating “evolutionarily significant units” (ESUs) for conservation, and for planning actions to protect and restore taxa threatened with extinction. Speyeria zerene hippolyta, the Oregon silverspot butterfly, is a U.S.A. federally threatened subspecies that is the focus of considerable conservation effort, but whose evolutionary relationships with other Speyeria taxa are not well-understood. We conducted a genetic analysis of nine Speyeria species and 25 subspecies from western U.S.A., using both mitochondrial and nuclear markers. Our goal was to determine whether such data supported (a) S. z. hippolyta’s designation as an ESU, and (b) the current morphologically-based taxonomy of Speyeria spp. Our data for S. z. hippolyta were equivocal; while nuclear markers resolved all these individuals into a single clade, mtDNA data suggested the existence of two clades. Aside from S. cybele, which was consistently supported as monophyletic, our data provided little support for most of the species currently recognized for western U.S. Speyeria, including S. zerene, and even less for the many subspecies designations. These genetic findings stand in contrast to the morphological differences recognized by experts, and suggest a relatively recent origin for many of these taxa. Two of 66 individuals screened for Wolbachia infection tested positive for this symbiont. Our results provide no persuasive evidence that S. z. hippolyta should lose its status as an ESU, but they have important implications for ongoing management actions such as population augmentation.
Starting Page	1237
Ending Page	1253
Page Count	17
File Format	PDF
ISSN	1366638X
Journal	Journal of Insect Conservation
Volume Number	17
Issue Number	6
e-ISSN	15729753
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-11-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ESU Evolutionarily significant unit Lepidoptera Oregon silverspot butterfly Species delineation Wolbachia Entomology Conservation Biology/Ecology Biodiversity Animal Ecology Life Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Animal Science and Zoology Nature and Landscape Conservation Insect Science

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