Data from: Why is Madagascar special? The extraordinarily slow evolution of pelican spiders (Araneae, Archaeidae)
Wood, Hannah Marie, University of California, Davis
Gillespie, Rosemary G., University of California, Berkeley
Griswold, Charles E., California Academy of Sciences
Wainwright, Peter C., University of California, Davis
Published Dec 24, 2014 on Dryad.
Cite this dataset
Wood, Hannah Marie; Gillespie, Rosemary G.; Griswold, Charles E.; Wainwright, Peter C. (2014). Data from: Why is Madagascar special? The extraordinarily slow evolution of pelican spiders (Araneae, Archaeidae) [Dataset]. Dryad. https://doi.org/10.5061/dryad.34qm4
Although Madagascar is an ancient fragment of Gondwana, the majority of taxa studied thus far appear to have reached the island through dispersal from Cenozoic times. Ancient lineages may have experienced a different history compared to more recent Cenozoic arrivals, as such lineages would have encountered geoclimatic shifts over an extended time period. The motivation for this study was to unravel the signature of diversification in an ancient lineage by comparing an area known for major geoclimatic upheavals (Madagascar) versus other areas where the environment has been relatively stable. Archaeid spiders are an ancient paleoendemic group with unusual predatory behaviors and spectacular trophic morphology that likely have been on Madagascar since its isolation. We examined disparities between Madagascan archaeids and their non-Madagascan relatives regarding timing of divergence, rates of trait evolution, and distribution patterns. Results reveal an increased rate of adaptive trait diversification in Madagascan archaeids. Furthermore, geoclimatic events in Madagascar over long periods of time may have facilitated high species richness due to montane refugia and stability, rainforest refugia, and also ecogeographic shifts, allowing for the accumulation of adaptive traits. This research suggests that time alone, coupled with more ancient geoclimatic events allowed for the different patterns in Madagascar.
MrBayes phylogenetic analysis: DNA and morphology
This is the MrBayes phylogenetic analyses of the total evidence data: DNA and morphology
MrBayes phylogenetic analysis of only molecular data
This is the MrBayes phylogenetic analysis of only the molecular data (four concatenated genetic markers)
MrBayes phylogenetic analysis only morphology
This is the MrBayes phylogenetic analysis of only the morphological data
Divergence dating analysis in BEAST
This is the divergence dating analysis performed in BEAST
Divergence dating analysis in BEAST including additional Australian taxa, Supp Info
This is the divergence dating analysis performed in BEAST that includes the additional Australian taxa. The results from this analysis is shown and discussed in the Supplementary Information. The additional Australian taxa sequences are taken from Rix and Harvey (2012), see Supplementary Information for full citation.
Brownie analysis of morphological measurements
The censored rate test of morphological data, performed in Brownie v.2.1. This analysis can be performed treating Madagascar as one group or as two groups as defined in the analysis.
Brownie analysis of habitat
The censored rate test of habitat data, performed in Brownie v.2.1. This analysis can be performed treating Madagascar as one group or as two groups as defined in the analysis.