Natural history of the critically endangered salamander Ambystoma leorae (Caudata: Ambystomatidae) from the Río Tonatzin, Mexico

  • Julio A. Lemos-Espinal Facultad de Estudios Superiores Iztacala. Laboratorio de Ecología-UBIPRO
  • Geoffrey R. Smith Denison University. Department of Biology
  • Aline B. Estrella Zamora Facultad de Estudios Superiores Iztacala. Laboratorio de Ecología-UBIPRO
  • Guillermo WoolrichPiña Instituto Tecnológico Superior de Zacapoaxtla. División de Biología, Subdirección de Investigación y Posgrado. Laboratorio de Zoología
  • Raymundo Montoya Ayala Facultad de Estudios Superiores Iztacala. Laboratorio de Cómputo-UBIPRO
Keywords: adults, aquatic vegetation, eggs, juveniles, sexual dimorphism, substrate, water speed

Abstract

In Mexico, many species of Ambystoma are endangered, but unfortunately little is known about their natural history and ecology. We report on aspects of the natural history of A. leorae, a critically endangered endemic salamander, from the Río Tonatzin, State of México, Mexico. We observed egg masses, which were attached to vegetation, from April to June, with a mean of 7.28 eggs per egg mass. Larval A. leorae were found in sections of the Río Tonatzin with muddy bottoms and submerged aquatic vegetation. We observed adult and juvenile salamanders throughout the year except September, but with a peak from May to July. The use of sites along the Río Tonatzin by adult and juvenile A. leorae was driven primarily by vegetation type and substrate type of the site, with mud or sand substrate with grass roots and submerged aquatic vegetation being the most used site types. We found no evidence of sexual dimorphism in A. leorae. Our results suggest that adult and juvenile A. leorae use a variety of stream sites, although larvae appear to be more limited in their use of stream sites. These observations indicate that to maintain this population of A. leorae, the general conditions existing in the Río Tonatzin should be protected, especially the sections with muddy bottoms and aquatic vegetation where larvae, juveniles, and adults are found

Downloads

Download data is not yet available.
Published
2017-06-28
How to Cite
Lemos-Espinal, J., Smith, G., Zamora, A., WoolrichPiña, G., & Ayala, R. (2017). Natural history of the critically endangered salamander Ambystoma leorae (Caudata: Ambystomatidae) from the Río Tonatzin, Mexico. Phyllomedusa: Journal of Herpetology, 16(1), 3-11. https://doi.org/10.11606/issn.2316-9079.v16i1p3-11
Section
Articles