NATURAL HISTORY OBSERVATIONS OF AMBYSTOMA ALTAMIRANI AND DRYOPHYTES PLICATUS AT SIERRA DE LAS CRUCES, STATE OF MÉXICO, MEXICO

The streams in the mountains surrounding the Valley of Mexico often contain salamanders and anurans. Knowledge of these species is relatively poor, however. We report observations on predation and reproduction in two species from these streams, Ambystoma altamirani and Dryophytes plicatus.