Fine-scale genetic structure of suckermouth Hypostomus ancistroides populations: the importance of Neotropical streams for fish conservation
| Autor: | Caroline Apolinário-Silva, Thais Kotelok-Diniz, Bruno A. Galindo, Silvia Helena Sofia, Wilson Frantine-Silva, Raul Henrique Cardoso Nascimento, Dhiego G. Ferreira |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Suckermouth Scale (ratio) Hypostomus ancistroides STREAMS Biology 010603 evolutionary biology 01 natural sciences Fishery 03 medical and health sciences 030104 developmental biology Genetic structure Fish human activities Ecology Evolution Behavior and Systematics |
| Zdroj: | Biological Journal of the Linnean Society. 134:198-213 |
| ISSN: | 1095-8312 0024-4066 |
| Popis: | In the Neotropics, freshwater streams harbour high fish diversity and are constantly threatened by anthropogenic disturbance. However, there are few studies on the genetic diversity of fish populations inhabiting these streams. We aimed to assess, based on microsatellite and mitochondrial DNA markers, the population structure and genetic diversity of the suckermouth catfish, Hypostomus ancistroides, a Neotropical species widely distributed across the Upper Paraná River Basin in South America. Twenty-five locations were sampled, distributed across 18 sites in six tributary streams and another seven sites in the main river channel. Our analyses revealed a spatial heterogeneity in genetic diversity within the basin, indicating fine-scale genetic structuring. Samples from all streams showed exclusive haplotypes and private alleles, reinforcing the importance of preserving the tributaries for the conservation of the genetic diversity of the studied populations. The fine-scale genetic structuring of H. ancistroides is probably related to the limited displacement capacity of this species. |
| Databáze: | OpenAIRE |
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