Man-Made Barriers and Augmentation Drive Spatial and Temporal Trends of Genetic Diversity and Effective Population Size in a Riverine Fish.

Abstract excerpt

Man-made barriers impede fish movement up and downstream, between the channel and floodplain, and from marginal habitats to those that promote survival and reproductive output. Barriers also increase genetic isolation resulting in loss of genetic variation. Species with drifting eggs and larvae, like the endangered Rio Grande silvery minnow (Hybognathus amarus), are especially susceptible to disruptions to...

Topics

• Animals
• Genetic Variation
• Genetics, Population
• Population Density
• Cyprinidae
• Rivers
• Ecosystem
• Sequence Analysis, DNA