Large-scale gene flow in the barnacle Jehlius cirratus and contrasts with other broadly-distributed taxa along the Chilean coast

• Published in: PeerJ (San Francisco, CA) Vol. 5; p. e2971
• Main Authors: Guo, Baoying, Wares, John P
• Format: Journal Article
• Language: English
• Published: United States PeerJ. Ltd 07-02-2017; PeerJ, Inc; PeerJ Inc
• Subjects: Acanthina; Animal behavior; Balanus glandula; Barnacle; Biodiversity; Biogeography; Biology; Chile; Chthamalus; Cirripedia; Coastal ecosystems; Coasts; Cytochrome oxidase I; Ecology; Evolutionary Studies; Gene flow; Genes; Genetic research; Genetic structure; Genetics; Geographical distribution; Life history; Marine Biology; Marine ecology; Mitochondria; Oxidases; Phylogeography; Population; Population genetics; Species; Tide pools; Zoology; Chile; North America; Barnacle; Biogeography; Chile; Population genetics; Phylogeography
• ISSN: 2167-8359; 2167-8359
• DOI: 10.7717/peerj.2971

We evaluate the population genetic structure of the intertidal barnacle
across a broad portion of its geographic distribution using data from the mitochondrial cytochrome oxidase I (COI) gene region. Despite sampling diversity from over 3,000 km of the linear range of this species, there is only slight regional structure indicated, with overall Φ
of 0.036 (
 < 0.001) yet no support for isolation by distance. While these results suggest greater structure than previous studies of
had indicated, the pattern of diversity is still far more subtle than in other similarly-distributed species with similar larval and life history traits. We compare these data and results with recent findings in four other intertidal species that have planktotrophic larvae. There are no clear patterns among these taxa that can be associated with intertidal depth or other known life history traits.