scholarly journals Genetic structure and diffusion of population of Coilia ectenes taihuensis in Lake Nansi inferred from the mitochondrial control region

2015 ◽  
Vol 27 (4) ◽  
pp. 686-692
Author(s):  
LI Xiuqi ◽  
◽  
LIU Feng ◽  
LENG Chunmei ◽  
DONG Guancang ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Control Region ◽  
Mitochondrial Control Region ◽  
Coilia Ectenes ◽  
And Diffusion

The mitochondrial control region reveals genetic structure in southern kingcroaker populations on the coast of the Southwestern Atlantic

2017 ◽  
Vol 191 ◽  
pp. 87-94 ◽  
Author(s):  
Adrianne dos Santos Freitas ◽  
Raimundo da Silva ◽  
Iracilda Sampaio ◽  
Horacio Schneider
Keyword(s):  
Genetic Structure ◽  
Control Region ◽  
Mitochondrial Control Region ◽  
Southwestern Atlantic

Population genetic structure of long-tailed pygmy rice rats (Oligoryzomys longicaudatus) from Argentina and Chile based on the mitochondrial control region

2010 ◽  
Vol 88 (1) ◽  
pp. 23-35 ◽  
Author(s):  
Raúl E. González-Ittig ◽  
Hernán J. Rossi-Fraire ◽  
Gustavo E. Cantoni ◽  
Eduardo R. Herrero ◽  
Rosendo Benedetti ◽  
...  
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Control Region ◽  
Phylogenetic Trees ◽  
Mitochondrial Control Region ◽  
The Andes ◽  
Single Clade ◽  
The Last Glacial Maximum ◽  
Oligoryzomys Longicaudatus ◽  
The Last Glacial

The rodent Oligoryzomys longicaudatus (Bennett, 1832) (Rodentia, Cricetidae) inhabits southern forests of Argentina and Chile, a region severely affected by glaciations during the Pleistocene–Holocene periods. We evaluate here the diversity of the mitochondrial control region to characterize the genetic structure of this species from forests and bushy areas of seven populations from Argentina and four populations from Chile. Statistical analyses showed shallow haplotype trees and mismatch distributions compatible with recent range expansions. The presence of “private” haplotypes indicates that current levels of gene flow among populations of each country would be low to moderate. Significant differences in haplotype frequencies were detected between eastern and western populations, indicating that the Andes mountains would be an effective geographic barrier for gene flow despite the existing valleys that could act as corridors for dispersion. A single clade containing all the haplotypes was recovered in the phylogenetic trees, suggesting postglacial dispersion from a single refugium during the Last Glacial Maximum. The higher effective size and levels of polymorphism in populations from Chile suggest that the refugium was located in this country. The asymmetric gene flow from Chile to Argentina may reflect a recent colonization of the eastern populations.

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