Journal article
A possible explanation for the population size discrepancy in tuna (genus Thunnus) estimated from mitochondrial DNA and microsatellite data
Molecular Phylogenetics and Evolution, Vol.66(2), pp.463-468
02/2013
DOI: 10.1016/j.ympev.2012.05.002
PMID: 22579759
Abstract
[Display omitted] ► We report ten new cases of population size discrepancy in five tuna species. ► Homoplasy of microsatellite alleles is not responsible for the discrepancy. ► The discrepancy may reflect behavioral differences between the sexes. A recent study using both mitochondrial DNA (mtDNA) and microsatellite data reported on a population size discrepancy in the eastern tiger salamander where the effective population size (Ne) estimate of the former exceeded that of the latter. That study suggested, among other hypotheses, that homoplasy of microsatellite alleles is responsible for the discrepancy. In this investigation, we report 10 new cases of a similar discrepancy in five species of tuna. These cases derive from our Bayesian inferences using data from Pacific Bluefin Tuna (Thunnus orientalis) and Yellowfin Tuna (Thunnus albacares), as well as from published estimates of genetic diversity for additional populations of Yellowfin Tuna and three other tuna species. Phylogenetic character analyses of inferred genealogies of Pacific Bluefin and Yellowfin Tuna reveal similar reduced levels of mtDNA and microsatellite homoplasy. Thus, the discrepancy between inferred population sizes from mtDNA and microsatellite data in tuna is most likely not an artifact of the chosen mutation models used in the microsatellite analyses, but may reflect behavioral differences between the sexes such as female-biased philopatry and male-biased dispersal. This explanation now warrants critical testing with more local populations of tuna and with other animal and plant groups that have different life histories.
Details
- Title: Subtitle
- A possible explanation for the population size discrepancy in tuna (genus Thunnus) estimated from mitochondrial DNA and microsatellite data
- Creators
- Fan Qiu - Department of Biology, Box 118525, University of Florida, Gainesville, FL 32611-8525, USAAndrew Kitchen - Center for Infectious Disease Dynamics, Department of Biology, The Pennsylvania State University, University Park, PA 16802, USAPeter Beerli - Department of Scientific Computing, Florida State University, Tallahassee, FL 32306-4120, USAMichael M Miyamoto - Department of Biology, Box 118525, University of Florida, Gainesville, FL 32611-8525, USA
- Resource Type
- Journal article
- Publication Details
- Molecular Phylogenetics and Evolution, Vol.66(2), pp.463-468
- Publisher
- Elsevier Inc
- DOI
- 10.1016/j.ympev.2012.05.002
- PMID
- 22579759
- ISSN
- 1055-7903
- eISSN
- 1095-9513
- Language
- English
- Date published
- 02/2013
- Academic Unit
- Anthropology; International Programs
- Record Identifier
- 9983984525102771
Metrics
34 Record Views