Spatial overlap of the diurnal freshwater fish community in the Media Luna wetland system, Rioverde, S.L.P., Mexico

Authors

  • Jorge Palacio-Núñez Colegio de Postgraduados, Campus San Luis Potosí. Iturbide 73, Salinas de Hidalgo, S.L.P., 78600 México
  • Genaro Olmos-Oropeza Colegio de Postgraduados, Campus San Luis Potosí. Iturbide 73, Salinas de Hidalgo, S.L.P., 78600 México
  • José R. Verdú Instituto de Investigación de la Biodiversidad (CIBIO), Universidad de Alicante, Carretera San Vicente del Raspeig s/n, San Vicente del Raspeig, Alicante, 03690 España
  • Eduardo Galante Instituto de Investigación de la Biodiversidad (CIBIO), Universidad de Alicante, Carretera San Vicente del Raspeig s/n, San Vicente del Raspeig, Alicante, 03690 España
  • Octavio César Rosas-Rosas Colegio de Postgraduados, Campus San Luis Potosí. Iturbide 73, Salinas de Hidalgo, S.L.P., 78600 México
  • Juan Felipe Martínez-Montoya Colegio de Postgraduados, Campus San Luis Potosí. Iturbide 73, Salinas de Hidalgo, S.L.P., 78600 México
  • Jesús Enríquez Colaborador externo. Ejército Nacional 100, Frac. Ignacio Loyola. Rioverde, S.L.P. 79610. México

Keywords:

Niche overlap, community analysis, communities distribution, endemic fishes, exotic fishes.

Abstract

The Media Luna wetland is the most representative and most affected by tourism and management actions in the Llanura de Rioverde, S.L.P. It contains 13 fish species, two of them are nocturnal and eleven diurnal. This study considers only the diurnal species. From these, the most relevant are five local endemic, one native widely distributed and five introduced species. In order to determine the degree of spatial overlap, 54 sub-aquatic transects per sampling session were conducted from 1998 and 1999. The fish population distribution per age class (adult, juvenile and larvae) and the similitude between species pairs were analyzed and estimated for the habitat variables: sector, depth, and vegetation. Adult and juvenile fish tended to overlap for all the variables, whereas the larvae segregated for sector but overlap for depth and vegetation. There was a high overlap between native and introduced species for at least one their life stages. The endemic species that showed the highest spatial overlap with the introduced species was Ataeniobius toweri, whereas Oreochromis sp. was the introduced one with the highest overlap with the native species. All of the endemic species are endangered; was thus, the possible affectation caused by the spatial overlap between endemic and introduced species has a special interest.

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Published

2017-01-09

How to Cite

Palacio-Núñez, J., Olmos-Oropeza, G., Verdú, J. R., Galante, E., Rosas-Rosas, O. C., Martínez-Montoya, J. F., & Enríquez, J. (2017). Spatial overlap of the diurnal freshwater fish community in the Media Luna wetland system, Rioverde, S.L.P., Mexico. HIDROBIOLÓGICA, 20(1), 21–30. Retrieved from https://hidrobiologica.izt.uam.mx/hidrobiologica/index.php/revHidro/article/view/777

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