Phylogeography and Sex-Biased Dispersal across Riverine Manatee Populations (Trichechus inunguis and Trichechus manatus) in South America

Paula Satizábal; Antonio A. Mignucci-Giannoni; Sebastián Duchêne; Dalila Caicedo-Herrera; Carlos M. Perea-Sicchar; Carmen R. García-Dávila; Fernando Trujillo; Susana J. Caballero

doi:10.1371/journal.pone.0052468

Phylogeography and Sex-Biased Dispersal across Riverine Manatee Populations (Trichechus inunguis and Trichechus manatus) in South America

Paula Satizábal
, Antonio A. Mignucci-Giannoni
, Sebastián Duchêne
, Dalila Caicedo-Herrera
, Carlos M. Perea-Sicchar
, Carmen R. García-Dávila
, Fernando Trujillo
, Susana J. Caballero

Department of Marine and Environmental Sciences

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

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.

Original language	English
Article number	e52468
Number of pages	10
Journal	PLoS One
Volume	7
Issue number	12
DOIs	https://doi.org/10.1371/journal.pone.0052468
State	Published - Dec 20 2012

ASJC Scopus Subject Areas

General

Keywords

Animal Migration/physiology
Animals
Bayes Theorem
Female
Genes, Mitochondrial/genetics
Genetic Variation
Genetics, Population
Geography
Haplotypes/genetics
Male
Microsatellite Repeats/genetics
Molecular Sequence Data
Phylogeography
Population Dynamics
Rivers
Sex Characteristics
South America
Trichechus inunguis/genetics
Trichechus manatus/genetics

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Satizábal, P., Mignucci-Giannoni, A. A., Duchêne, S., Caicedo-Herrera, D., Perea-Sicchar, C. M., García-Dávila, C. R., Trujillo, F., & Caballero, S. J. (2012). Phylogeography and Sex-Biased Dispersal across Riverine Manatee Populations (Trichechus inunguis and Trichechus manatus) in South America. PLoS One, 7(12), Article e52468. https://doi.org/10.1371/journal.pone.0052468

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abstract = "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. {\textcopyright} 2012 Satiz{\'a}bal et al.",

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AU - Duchêne, Sebastián

AU - Caicedo-Herrera, Dalila

AU - Perea-Sicchar, Carlos M.

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AU - Trujillo, Fernando

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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.

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KW - Sex Characteristics

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Phylogeography and Sex-Biased Dispersal across Riverine Manatee Populations (Trichechus inunguis and Trichechus manatus) in South America

Abstract

ASJC Scopus Subject Areas

Keywords

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