Loading…

Evaluating species origins within tropical sky‐islands arthropod communities

Aim To (a) evaluate whether colonization of newly emerged high‐elevation habitats occurred from neighbouring highlands (allopatric divergence and niche conservatism) or from within the same mountain (peripatric or parapatric divergence and niche shift) and (b) test for the effect of past landscape c...

Full description

Saved in:
Bibliographic Details
Published in:Journal of biogeography 2021-09, Vol.48 (9), p.2199-2210
Main Authors: Uscanga, Adriana, López, Heriberto, Piñero, Daniel, Emerson, Brent C., Mastretta‐Yanes, Alicia, Parmakelis, Aristeidis
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Aim To (a) evaluate whether colonization of newly emerged high‐elevation habitats occurred from neighbouring highlands (allopatric divergence and niche conservatism) or from within the same mountain (peripatric or parapatric divergence and niche shift) and (b) test for the effect of past landscape configurations in geographically structuring biodiversity (a West–East structure spanning the central part of the Transmexican Volcanic Belt). Location Transmexican Volcanic Belt, Mexico. Taxa Coleoptera and Araneae. Methods Coleoptera and Araneae communities were collected in a comparative sampling framework. Seven sky‐islands were sampled within two high‐elevation habitats separated by altitude. Samples were individually sequenced for a region of the mtDNA COI gene to delimit Operational Taxonomic Units (OTUs) and haplotypes within them. Richness was estimated at the community level, as well as genetic diversity within and among mountains and habitats. The West–East structure was tested with a null model and an analysis of variance with permutations. Results Few OTUs were shared between the Abies forests and alpine grasslands. High beta diversity was found across mountains. Beta diversity between the West and East grouping is higher than expected by chance. Main conclusions Our results indicate that colonization from other mountains followed by allopatric divergence dominates as a source of OTU formation, and that despite some probable connectivity during glacial periods existed, ancient communities and genetic structures persist.
ISSN:0305-0270
1365-2699
DOI:10.1111/jbi.14144