Phylogeography and biogeography concordance in the marine gastropod Crepipatella dilatata (Calyptraeidae) along the southeastern Pacific coast

The Journal of Heredity
Antonio BranteFrédérique Viard

Abstract

The biogeography and phylogeography concordance hypothesis suggests that the same factors, for instance physical barriers or environmental gradients, shape both species assemblages and intraspecific genetic structure. In the marine realm, previous studies have however suggested that phylogeographic patterns are also explained by the life-history strategy of the species. However, evidence is contradictory and comes mainly from the northern hemisphere, which is characterized by specific environmental conditions and evolutionary histories of species. In this work, we evaluated the concordance hypothesis in the southern Pacific using the marine gastropod Crepipatella dilatata as a case study. This intertidal species with direct development exhibited a restricted dispersal potential, a feature that contrasts with previous species studied in the same area. Using the gene cytochrome oxidase I, we analyzed 253 individuals sampled at 10 locations covering 543 km of the coast of Chile. The study sites also incorporated 2 biogeographic regions separated by a well-studied biogeographic break (at 30°S). Populations of C. dilatata displayed a high degree of genetic structure and a perfect match between phylogeographic and biogeographic break...Continue Reading

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Citations

Nov 19, 2013·BMC Evolutionary Biology·Pilar A Haye, Natalia C Muñoz-Herrera
Mar 28, 2018·Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis·Frank M FontanellaMegan Whitaker
Jun 2, 2018·Scientific Reports·Peter R TeskeLuciano B Beheregaray
Nov 15, 2014·The Journal of Experimental Biology·Juan Diego Gaitán-EspitiaMarco A Lardies

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