Fossil-calibrated phylogenies of Southern cave weta show dispersal and extinction confound biogeographic signal.

ABSTRACT: The biota of continents and islands are commonly considered to have a source-sink relationship, but small islands can harbour distinctive taxa. The distribution of four monotypic genera of Orthoptera on young subantarctic islands indicates a role for long-distance dispersal and extinction. Phylogenetic relationships were inferred from whole mtDNA genomes and nuclear sequences (45S cassette; four histones). We used a fossil and one palaeogeographic event to calibrate molecular clock analysis. We confirm that neither the Australian nor Aotearoa-New Zealand Rhaphidophoridae faunas are monophyletic. The radiation of Macropathinae may have begun in the late Jurassic, but trans-oceanic dispersal is required to explain the current distribution of some lineages within this subfamily. Dating the mo

SUBMITTER: Dowle EJ 

PROVIDER: S-EPMC10864783 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature