NDLI: Phylogeny of the dragonfly genus Sympetrum (Odonata: Libellulidae)

Content Provider	Springer Nature Link
Author	Pilgrim, Erik M. Dohlen, Carol D.
Copyright Year	2012
Abstract	The libellulid dragonfly genus Sympetrum has been recognized since 1833, but lacks any morphological synapomorphies to unite the taxon. Previous researchers have disagreed over which species belong in Sympetrum, bringing the monophyly of the genus into question. We use DNA sequence data from 6 genetic loci (16S, tRNA-valine, 12S, elongation factor 1 alpha, cytochrome oxidase subunit I, and the second internal transcribed spacer region) and 25 morphological characters (mainly genitalic) to test the monophyly of Sympetrum with Bayesian inference and maximum likelihood analyses. Under Bayesian inference, all Sympetrum species included in this study form a clade, which also contains the Hawaiian monotypic genus Nesogonia, often considered a close relative of Sympetrum. Phylogenetic analyses also reveal at least six strongly supported clades (treated as species groups) within Sympetrum, but relationships between these species groups remain unresolved or unsupported. Although the relationships between Sympetrum species groups remain unresolved, several species groups include taxa from multiple biogeographic regions/continents, and the species group sister to the rest of Sympetrum contains migratory species from the New World and Africa. This pattern suggests a complex biogeographic history in Sympetrum shaped by vicariance and dispersal. Preliminary estimates of the divergence dates of Sympetrum species groups outline a rapid radiation of the groups approximately 32-38 million years ago, possibly influenced by cooling and drying climates of the late Eocene and early Oligocene.
Starting Page	281
Ending Page	295
Page Count	15
File Format	PDF
ISSN	14396092
Journal	Organisms Diversity & Evolution
Volume Number	12
Issue Number	3
e-ISSN	16181077
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-03-30
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Odonata Anisoptera Divergence dating Libellulidae Phylogeny Rapid radiation Plant Systematics/Taxonomy/Biogeography Evolutionary Biology Developmental Biology Biodiversity Animal Systematics/Taxonomy/Biogeography
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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