History and Impacts of Levees in the Lower Rio Grande Valley

Furlong, John N.; Ivey, J. P.; Barrow, Joe; Moya, M. Isabel; O'Quinn, Ralph

doi:10.1061/40928(251)6

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…com). Similar hurricanes hit the area in 1967 and 1988 (Furlong et al 2007). According to Cuatro Ciénegas locals, these hurricanes also resulted in brief aquatic connections of many pools and river systems.…”

Section: Recent Gene Flow Between Río Salado ? Pozas Azules and The Rmentioning

confidence: 91%

Phylogeography, genetic structure, and gene flow in the endemic freshwater shrimp Palaemonetes suttkusi from Cuatro Ciénegas, Mexico

Chaves‐Campos

Johnson

León³

et al. 2010

Conserv Genet

View full text Add to dashboard Cite

The valley of Cuatro Ciénegas in Mexico has the highest degree of local endemicity of any habitat in North America. A large number of endemic aquatic species occur both in the Cuatro Ciénegas basin and in the upper parts of the Río Salado de los Nadadores drainage, located immediately to the east of the valley. No natural surface flow occurs between these basins but artificial canals connect both areas. It is not clear whether the sharing of endemics between the Cuatro Ciénegas basin and the Río Salado is due to migration through canals. We conducted a phylogeographic study of mitochondrial haplotypes of the endemic shrimp Palaemonetes suttkusi to determine the evolutionary distinctiveness of the population found in Río Salado. We discovered that P. suttkusi likely has occurred naturally in both basins well into the distant past. Based on molecular clock analyses of the COI gene, the populations in the Río Salado and much of the Cuatro Ciénegas basin likely began diverging from each other between 1.9 and 11.2 Myr ago. The general levels of divergence are substantial but our results suggest there has also likely been recent gene flow between these basins. This is consistent with migration through human-made canals, but also consistent with the occurrence of natural gene flow during intermittent wet periods in the past million years. We also found significant differentiation of the Pozas Azules area from the rest of the Cuatro Ciénegas basin, a finding that is concordant with several phylogeographic studies on other aquatic endemics in Cuatro Ciénegas. We recommend that the upper parts of the Río Salado, the Pozas Azules area, and the rest of the Cuatro Ciénegas basin should each be considered independent evolutionarily significant units for conservation, and that migration of species through humanmade canals should be monitored and controlled.

show abstract

Section: Recent Gene Flow Between Río Salado ? Pozas Azules and The Rmentioning

confidence: 91%

Phylogeography, genetic structure, and gene flow in the endemic freshwater shrimp Palaemonetes suttkusi from Cuatro Ciénegas, Mexico

Chaves‐Campos

Johnson

León³

et al. 2010

Conserv Genet

View full text Add to dashboard Cite

show abstract

“…Poza Anteojo exhibited many hallmarks of significant isolation from other sites in the Cuatro Ciénegas basin, such as lowest heterozygosity and higher pairwise divergence between sampling sites. Although it is possible that gene flow might have occurred during the relatively wet cycles in the Holocene that increased water levels of lakes in this desert and caused vegetation changes (Furlong et al, 2007; Butzer et al, 2008), the relative rates of migration and assignment tests indicate there was no evidence for genetic exchange between Poza Anteojo and the other sampling sites in the Cuatro Ciénegas basin. These analyses suggest a common pattern of isolation with strong effects of drift.…”

Section: Discussionmentioning

confidence: 99%

Population genetic structure of the endemic fish Gambusia marshi from the Cuatro Ciénegas basin and its outflow in Coahuila, Mexico

Xie

Kim

Powell

et al. 2022

Aquatic Conservation

View full text Add to dashboard Cite

1. The valley of Cuatro Ciénegas in Coahuila, Mexico, has the highest degree of local endemism of any habitat in North America. Despite the arid desert climate, the basin harbours an extensive system of permanent streams, wetlands, and springfed pools, and is divided into two sub-basins by the central Sierra de San Marcos y Pinos.2. Microsatellite loci were surveyed to infer the genetic diversity and population structure of Gambusia marshi, a poeciliid fish endemic to the Cuatro Ciénegas basin and the Río Salado de Nadadores in north-east Mexico.3. Bayesian clustering analysis revealed four genetic populations within G. marshi and a major east-west division corresponding to the Sierra de San Marcos y Pinos.

show abstract

History and Impacts of Levees in the Lower Rio Grande Valley

Cited by 2 publications

References 0 publications

Phylogeography, genetic structure, and gene flow in the endemic freshwater shrimp Palaemonetes suttkusi from Cuatro Ciénegas, Mexico

Phylogeography, genetic structure, and gene flow in the endemic freshwater shrimp Palaemonetes suttkusi from Cuatro Ciénegas, Mexico

Population genetic structure of the endemic fish Gambusia marshi from the Cuatro Ciénegas basin and its outflow in Coahuila, Mexico

Contact Info

Product

Resources

About