Geographic distribution of genetic diversity in populations of Rio Grande Chub Gila pandora

Galindo, R.; Wilson, Wade D.; Caldwell, Colleen A.

doi:10.1007/s10592-016-0845-2

Cited by 2 publications

(1 citation statement)

References 47 publications

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“…Among the many man-made alterations affecting these rivers, the Red Bluff Reservoir is a particularly notable example, having significantly altered the downstream habitat of the Pecos River and made it inhospitable for several aquatic organisms ( Hoagstorm 2009 ; Pease and Delaune 2021 ; Mahan et al 2022 ). Studies have revealed an enduring pattern of impacts on population genetic health, including aspects like genetic divergence and diversity loss, directly attributable to the environmental stressors adversely affecting the river’s ecosystem ( Galindo et al 2016 ; Osborne et al 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Patterns of genetic divergence in the Rio Grande cooter (Pseudemys gorzugi), a riverine turtle inhabiting an arid and anthropogenically modified system

Vandewege,

Gutierrez,

Davis

et al. 2024

Journal of Heredity

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The lower Rio Grande and Pecos River of the southwest United States of America have been heavily modified by human activities, profoundly impacting the integrity of their aquatic wildlife. In this context, we focused our study on the population genomics of the Rio Grande Cooter (Pseudemys gorzugi), a freshwater turtle of increasing conservation concern, residing in these two rivers and their tributaries. The genetic data revealed two distinct populations: one in the Pecos and Black rivers of New Mexico, and another in the Rio Grande and Devils River of Texas, with admixed individuals identified at the confluence of the Rio Grande and Pecos River. In addition to having a smaller geographic range, we found lower observed heterozygosity, reduced nucleotide diversity, and a smaller effective population size (Ne) in New Mexico population. Our results depict a significant isolation-by-distance pattern across their distribution, with migration being notably infrequent at river confluences. These findings are pivotal for future conservation and restoration strategies, emphasizing the need to recognize the unique needs of each population.

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