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| GONZÁLEZ-WEVAR,CLAUDIO ALEJANDRO; DÍAZ,ANGIE; GERARD,KARIN; CAÑETE,JUAN IVÁN; POULIN,ELIE. |
| 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... |
| Tipo: Journal article |
Palavras-chave: Antarctic Circumpolar Current; COI; Oceanographic barrier; Planktotrophy; Pliocene separation. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000400007 |
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| DÍAZ,ANGIE; GONZÁLEZ-WEVAR,CLAUDIO ALEJANDRO; MATURANA,CLAUDIA S; PALMA,ALVARO T; POULIN,ELIE; GERARD,KARIN. |
| The glacial cycles of the Pleistocene have promoted the principal climatic changes of the Southern Ocean, and motivated scientific interest regarding the strategies developed by marine benthic invertebrates to tolerate and overcome the extension and contraction of the ice sheet on the Antarctic continental platform. A recent study of the bathymetric zonation and distribution of macro-invertebrates in a shallow subtidal area of Fildes Bay (King George Island, South Shetlands Islands, Antarctica) highlighted the presence of a large aggregation of the brooding sea urchin Abatus agassizii, whose geographic distribution is known only for localities south of the Antarctic convergence (Antarctic Peninsula and South Shetland and South Georgia Islands in the Scotia... |
| Tipo: Journal article |
Palavras-chave: Antarctic benthic fauna; COI phylogenetic relationships; King George Island; Southern Ocean; Survivor population. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000400008 |
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