Conservation Genetics

, Volume 12, Issue 2, pp 557–567 | Cite as

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

  • Johel Chaves-Campos
  • Steven G. Johnson
  • Francisco J. García de León
  • C. Darrin HulseyEmail author
Research Article


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 human-made canals should be monitored and controlled.


Phylogeography mtDNA variation Gene flow Conservation genetics Evolutionary significant units Shrimp 



We thank Phillip Hollingsworth and Lyndon Coghill for field assistance, DESUVALLE A.C. (especially Leonardo Vásquez, Eduardo Cordero and Alma Zertuche) and PRONATURA A. C. (Isabel Morán and Perla Vásquez) for logistic support, and two anonymous reviewers for comments on an earlier version of this manuscript. C. D. Hulsey was supported by the University of Tennessee, Knoxville. The University of New Orleans provided support to S. G. Johnson and J. Chaves-Campos. The CIBNOR provided support to F. J. García de León. We thank the Mexican government for providing us with permits (Permiso de Pesca de Fomento N° DAPA/2/130409/0961 and DAN-01202).


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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Johel Chaves-Campos
    • 1
  • Steven G. Johnson
    • 1
  • Francisco J. García de León
    • 2
  • C. Darrin Hulsey
    • 3
    Email author
  1. 1.Department of Biological SciencesUniversity of New OrleansNew OrleansUSA
  2. 2.Laboratorio de Genética para la Conservación, Centro de Investigaciones Biológicas del NoroesteLa PazMexico
  3. 3.Department of Ecology and Evolutionary BiologyUniversity of Tennessee, KnoxvilleKnoxvilleUSA

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