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Downstairs gene flow: the effects of a linear sequence of waterfalls on the only population of the endangered minnow Astyanax xavante.
- Source :
-
Journal of fish biology [J Fish Biol] 2015 Sep; Vol. 87 (3), pp. 754-62. Date of Electronic Publication: 2015 Jul 24. - Publication Year :
- 2015
-
Abstract
- The aim of this study was to estimate the genetic diversity and structure of the only known population of minnow Astyanax xavante, which inhabits a stretch of river including several waterfalls. The FST values among the samples were not significant, except between two populations separated by a 30 m waterfall. Nevertheless, haplotype and nucleotide diversity increased in the downstream direction, indicating that gene flow is unidirectional, which indicates this genetic pattern as downstairs gene flow, as it has the effect of increasing genetic diversity in the downstream direction.<br /> (© 2015 The Fisheries Society of the British Isles.)
Details
- Language :
- English
- ISSN :
- 1095-8649
- Volume :
- 87
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Journal of fish biology
- Publication Type :
- Academic Journal
- Accession number :
- 26212357
- Full Text :
- https://doi.org/10.1111/jfb.12729