Unknown

Dataset Information

0

Evidence for late Pleistocene origin of Astyanax mexicanus cavefish.


ABSTRACT: BACKGROUND:Cavefish populations belonging to the Mexican tetra species Astyanax mexicanus are outstanding models to study the tempo and mode of adaptation to a radical environmental change. They are currently assigned to two main groups, the so-called "old" and "new" lineages, which would have populated several caves independently and at different times. However, we do not have yet accurate estimations of the time frames of evolution of these populations. RESULTS:We reanalyzed the geographic distribution of mitochondrial and nuclear DNA polymorphisms and we found that these data do not support the existence of two cavefish lineages. Using IMa2, a program that allows dating population divergence in addition to demographic parameters, we found that microsatellite polymorphism strongly supports a very recent origin of cave populations (

SUBMITTER: Fumey J 

PROVIDER: S-EPMC5905186 | BioStudies | 2018-01-01

REPOSITORIES: biostudies

Similar Datasets

2013-01-01 | S-EPMC3716263 | BioStudies
2016-06-27 | E-MTAB-5142 | ArrayExpress
1000-01-01 | S-EPMC4534248 | BioStudies
2015-01-01 | S-EPMC4749435 | BioStudies
1000-01-01 | S-EPMC3808867 | BioStudies
2012-01-01 | S-EPMC3434958 | BioStudies
2017-01-01 | S-EPMC5561457 | BioStudies
2018-01-01 | S-EPMC5800846 | BioStudies
2017-01-01 | S-EPMC5423691 | BioStudies
2018-01-01 | S-EPMC5989729 | BioStudies