A time-calibrated phylogeny of southern hemisphere stoneflies: Testing for Gondwanan origins

McCulloch, Graham A., Wallis, Graham P. and Waters, Jonathan M. (2016) A time-calibrated phylogeny of southern hemisphere stoneflies: Testing for Gondwanan origins. Molecular Phylogenetics and Evolution, 96 150-160. doi:10.1016/j.ympev.2015.10.028

Author McCulloch, Graham A.
Wallis, Graham P.
Waters, Jonathan M.
Title A time-calibrated phylogeny of southern hemisphere stoneflies: Testing for Gondwanan origins
Journal name Molecular Phylogenetics and Evolution   Check publisher's open access policy
ISSN 1095-9513
Publication date 2016-03-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.ympev.2015.10.028
Open Access Status Not Open Access
Volume 96
Start page 150
End page 160
Total pages 11
Place of publication Maryland Heights, United States
Publisher Academic Press
Language eng
Subject 1105 Dentistry
1312 Molecular Biology
1311 Genetics
Abstract For more than two centuries biogeographers have attempted to explain why terrestrial or freshwater lineages have geographic distributions broken by oceans, with these disjunct distributions either attributed to vicariance associated with Gondwanan fragmentation or trans-oceanic dispersal. Stoneflies (order: Plecoptera) are a widespread order of freshwater insects whose poor dispersal ability and intolerance for salt water make them ideal candidates for Gondwanan relicts – taxa whose distribution can be explained by vicariant isolation driven by the breakup of Gondwana. Here we reconstruct the phylogenetic relationships among southern hemisphere stoneflies (5 families; 86 genera) using 2864 bp of mitochondrial (COI) and nuclear (18S, H3) DNA, with a calibrated relaxed molecular clock used to estimate the chronology of diversification. Our analysis suggests that largely antitropical stonefly sub-orders, Arctoperlaria (northern hemisphere) and Antarctoperlaria (southern hemisphere), were formed approximately 121 Ma (95% prior probability distribution 107–143 Ma), which may reflect the vicariant rifting of the supercontinent Pangaea. Subsequently, we infer that a single Arctoperlaria lineage has dispersed into southern hemisphere 76 Ma (95% range 65–98 Ma). The majority of divergences between South American and Australian stonefly lineages appear to coincide with the opening of Drake Passage around 40 Ma, suggesting vicariant isolation of these landmasses may be responsible for these biogeographic disjunctions. In contrast, divergences between New Zealand lineages and their sister taxa appear to post-date vicariant timeframes, implying more recent dispersal events.
Keyword Biogeography
Molecular clock
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
School of Biological Sciences Publications
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