Tags

Type your tag names separated by a space and hit enter

Diversification in subtropical mountains: phylogeography, Pleistocene demographic expansion, and evolution of polyphenic mandibles in Taiwanese stag beetle, Lucanus formosanus.
Mol Phylogenet Evol. 2010 Dec; 57(3):1149-61.MP

Abstract

Pleistocene glacial oscillations have had profound impacts on the historical population dynamics of extant species. However, the genetic consequences of past climatic changes depend largely on the latitude and topography of the regions in question. This study investigates the effect of Pleistocene glacial periods and the Central Mountain Range on the phylogeography, historical demography, and phenotypic differentiation of a montane forest-dwelling stag beetle, Lucanus formosanus (Coleoptera: Lucanidae), which exhibits extensive mandible variations across mountain ranges in subtropical Taiwan. Analyses of mitochondrial (cox1) and nuclear (wg) loci reveal that L. formosanus originated nearly 1.6 million years ago (Mya) in the early Pleistocene period and consisted of geographically overlapping Alishan and Widespread clades. A drastic population expansion starting approximately 0.2 Mya in the Widespread clade likely resulted from altitudinal range shift of the temperate forests, which was closely tied to the arrival of the Riss glacial period in the late Middle Pleistocene. A ring-like pattern of historical gene flow among neighboring populations in the vicinity of the Central Mountain Range indicates that the mountains constitute a strong vicariant barrier to the east-west gene flow of L. formosanus populations. A geographic cline of decreasing mandible size from central to north and south, and onto southeast of Taiwan is inconsistent with the low overall phylogeographic structures. The degree of mandible variation does not correlate with the expected pattern of neutral evolution, indicating that the evolutionary diversification of this morphological weapon is most likely subject to sexual or natural selection. We hypothesize that the adaptive evolution of mandibles in L. formosanus is shaped largely by the habitat heterogeneity.

Links

Publisher Full Text

Authors+Show Affiliations

Huang JP
Department of Life Science & Center for Tropical Ecology and Biodiversity, Tunghai University, Taichung 40704, Taiwan. huangjp@umich.edu
Lin CP
No affiliation info available

MeSH

AnimalsCell NucleusColeopteraDNA, MitochondrialEcosystemEvolution, MolecularGene FlowGenes, InsectGenetics, PopulationPhylogeographySequence AlignmentSequence Analysis, DNATaiwan

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20971199

Citation

Huang, Jen-Pan, and Chung-Ping Lin. "Diversification in Subtropical Mountains: Phylogeography, Pleistocene Demographic Expansion, and Evolution of Polyphenic Mandibles in Taiwanese Stag Beetle, Lucanus Formosanus." Molecular Phylogenetics and Evolution, vol. 57, no. 3, 2010, pp. 1149-61.
Huang JP, Lin CP. Diversification in subtropical mountains: phylogeography, Pleistocene demographic expansion, and evolution of polyphenic mandibles in Taiwanese stag beetle, Lucanus formosanus. Mol Phylogenet Evol. 2010;57(3):1149-61.
Huang, J. P., & Lin, C. P. (2010). Diversification in subtropical mountains: phylogeography, Pleistocene demographic expansion, and evolution of polyphenic mandibles in Taiwanese stag beetle, Lucanus formosanus. Molecular Phylogenetics and Evolution, 57(3), 1149-61. https://doi.org/10.1016/j.ympev.2010.10.012
Huang JP, Lin CP. Diversification in Subtropical Mountains: Phylogeography, Pleistocene Demographic Expansion, and Evolution of Polyphenic Mandibles in Taiwanese Stag Beetle, Lucanus Formosanus. Mol Phylogenet Evol. 2010;57(3):1149-61. PubMed PMID: 20971199.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Diversification in subtropical mountains: phylogeography, Pleistocene demographic expansion, and evolution of polyphenic mandibles in Taiwanese stag beetle, Lucanus formosanus. AU - Huang,Jen-Pan, AU - Lin,Chung-Ping, Y1 - 2010/10/28/ PY - 2010/03/29/received PY - 2010/08/24/revised PY - 2010/10/17/accepted PY - 2010/10/26/entrez PY - 2010/10/26/pubmed PY - 2011/2/15/medline SP - 1149 EP - 61 JF - Molecular phylogenetics and evolution JO - Mol Phylogenet Evol VL - 57 IS - 3 N2 - Pleistocene glacial oscillations have had profound impacts on the historical population dynamics of extant species. However, the genetic consequences of past climatic changes depend largely on the latitude and topography of the regions in question. This study investigates the effect of Pleistocene glacial periods and the Central Mountain Range on the phylogeography, historical demography, and phenotypic differentiation of a montane forest-dwelling stag beetle, Lucanus formosanus (Coleoptera: Lucanidae), which exhibits extensive mandible variations across mountain ranges in subtropical Taiwan. Analyses of mitochondrial (cox1) and nuclear (wg) loci reveal that L. formosanus originated nearly 1.6 million years ago (Mya) in the early Pleistocene period and consisted of geographically overlapping Alishan and Widespread clades. A drastic population expansion starting approximately 0.2 Mya in the Widespread clade likely resulted from altitudinal range shift of the temperate forests, which was closely tied to the arrival of the Riss glacial period in the late Middle Pleistocene. A ring-like pattern of historical gene flow among neighboring populations in the vicinity of the Central Mountain Range indicates that the mountains constitute a strong vicariant barrier to the east-west gene flow of L. formosanus populations. A geographic cline of decreasing mandible size from central to north and south, and onto southeast of Taiwan is inconsistent with the low overall phylogeographic structures. The degree of mandible variation does not correlate with the expected pattern of neutral evolution, indicating that the evolutionary diversification of this morphological weapon is most likely subject to sexual or natural selection. We hypothesize that the adaptive evolution of mandibles in L. formosanus is shaped largely by the habitat heterogeneity. SN - 1095-9513 UR - https://www.unboundmedicine.com/medline/citation/20971199/Diversification_in_subtropical_mountains:_phylogeography_Pleistocene_demographic_expansion_and_evolution_of_polyphenic_mandibles_in_Taiwanese_stag_beetle_Lucanus_formosanus_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1055-7903(10)00419-7 DB - PRIME DP - Unbound Medicine ER -