TY - JOUR
T1 - Phylogeography and Sex-Biased Dispersal across Riverine Manatee Populations (Trichechus inunguis and Trichechus manatus) in South America
AU - Satizábal, Paula
AU - Mignucci-Giannoni, Antonio A.
AU - Duchêne, Sebastián
AU - Caicedo-Herrera, Dalila
AU - Perea-Sicchar, Carlos M.
AU - García-Dávila, Carmen R.
AU - Trujillo, Fernando
AU - Caballero, Susana J.
PY - 2012/12/20
Y1 - 2012/12/20
N2 - Phylogeographic patterns and sex-biased dispersal were studied in riverine populations of West Indian (Trichechus manatus) and Amazonian manatees (T. inunguis) in South America, using 410bp D-loop (Control Region, Mitochondrial DNA) sequences and 15 nuclear microsatellite loci. This multi-locus approach was key to disentangle complex patterns of gene flow among populations. D-loop analyses revealed population structuring among all Colombian rivers for T. manatus, while microsatellite data suggested no structure. Two main populations of T. inunguis separating the Colombian and Peruvian Amazon were supported by analysis of the D-loop and microsatellite data. Overall, we provide molecular evidence for differences in dispersal patterns between sexes, demonstrating male-biased gene flow dispersal in riverine manatees. These results are in contrast with previously reported levels of population structure shown by microsatellite data in marine manatee populations, revealing low habitat restrictions to gene flow in riverine habitats, and more significant dispersal limitations for males in marine environments. © 2012 Satizábal et al.
AB - Phylogeographic patterns and sex-biased dispersal were studied in riverine populations of West Indian (Trichechus manatus) and Amazonian manatees (T. inunguis) in South America, using 410bp D-loop (Control Region, Mitochondrial DNA) sequences and 15 nuclear microsatellite loci. This multi-locus approach was key to disentangle complex patterns of gene flow among populations. D-loop analyses revealed population structuring among all Colombian rivers for T. manatus, while microsatellite data suggested no structure. Two main populations of T. inunguis separating the Colombian and Peruvian Amazon were supported by analysis of the D-loop and microsatellite data. Overall, we provide molecular evidence for differences in dispersal patterns between sexes, demonstrating male-biased gene flow dispersal in riverine manatees. These results are in contrast with previously reported levels of population structure shown by microsatellite data in marine manatee populations, revealing low habitat restrictions to gene flow in riverine habitats, and more significant dispersal limitations for males in marine environments. © 2012 Satizábal et al.
KW - Animal Migration/physiology
KW - Animals
KW - Bayes Theorem
KW - Female
KW - Genes, Mitochondrial/genetics
KW - Genetic Variation
KW - Genetics, Population
KW - Geography
KW - Haplotypes/genetics
KW - Male
KW - Microsatellite Repeats/genetics
KW - Molecular Sequence Data
KW - Phylogeography
KW - Population Dynamics
KW - Rivers
KW - Sex Characteristics
KW - South America
KW - Trichechus inunguis/genetics
KW - Trichechus manatus/genetics
UR - https://www.scopus.com/pages/publications/84871413556
UR - https://www.scopus.com/pages/publications/84871413556#tab=citedBy
U2 - 10.1371/journal.pone.0052468
DO - 10.1371/journal.pone.0052468
M3 - Article
C2 - 23285054
SN - 1932-6203
VL - 7
JO - PLoS One
JF - PLoS One
IS - 12
M1 - e52468
ER -