Divergence time estimations and contrasting patterns of genetic diversity between Antarctic and southern South America benthic invertebrates
Author
dc.contributor.author
González Wevar, Claudio
Author
dc.contributor.author
Díaz, Angie
Author
dc.contributor.author
Gerard, Karin
Author
dc.contributor.author
Cañete, Juan Iván
Author
dc.contributor.author
Poulin, Elie
Admission date
dc.date.accessioned
2019-03-15T16:04:14Z
Available date
dc.date.available
2019-03-15T16:04:14Z
Publication date
dc.date.issued
2012
Cita de ítem
dc.identifier.citation
Revista Chilena de Historia Natural, Volumen 85, Issue 4, 2018, Pages 445-456
Identifier
dc.identifier.issn
07176317
Identifier
dc.identifier.issn
0716078X
Identifier
dc.identifier.other
10.4067/S0716-078X2012000400007
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/165921
Abstract
dc.description.abstract
Diversity, abundance and composition of taxonomic groups in the Southern Ocean differ from elsewhere in the planet, since the biogeography in this region reflects the complex interactions of tectonics, oceanography, climate and biological elements since the Eocene. Several groups of marine benthic organisms exhibit high levels of genetic divergence among provinces in this region, supporting the existence of a vicariance process through plate tectonics, while other groups with high dispersive capacity exhibit recent divergence processes. Moreover, the discovery of non- Antarctic decapod larvae in Antarctic Peninsula suggests that some groups can travel across the Antarctic Circumpolar Current. Here we analyzed levels of genetic divergence in congeneric species of three Southern Ocean's benthic invertebrate groups with dispersive potential. For this purpose we included in the analyses COI sequences of an echinoid (Sterechinus), a gastropod (Nacella), and a bivalve (Yoldia). Considering t