Coordinated Dispersal and Pre-Isthmian Assembly of the Central American Ichthyofauna.

ABSTRACT: We document patterns of coordinated dispersal over evolutionary time frames in heroine cichlids and poeciliine live-bearers, the two most species-rich clades of freshwater fishes in the Caribbean basin. Observed dispersal rate (DO) values were estimated from time-calibrated molecular phylogenies in Lagrange+, a modified version of the ML-based parametric biogeographic program Lagrange. DO is measured in units of "wallaces" (wa) as the number of biogeographic range-expansion events per million years. DO estimates were generated on a dynamic paleogeographic landscape of five areas over three time intervals from Upper Cretaceous to Recent. Expected dispersal rate (DE) values were generated from alternative paleogeographic models, with dispersal rates proportional to target area and source-riv

SUBMITTER: Tagliacollo VA 

PROVIDER: S-EPMC5410936 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature