OPALINID PROTOZOANS OF ANURANS FROM LOS TUXTLAS, VERACRUZ, MEXICO.

Resumen

Los Tuxtlas is a region that comprises a large zone of lowland rain forest an d grassland in southem Veracruz, Mexico. From this area, 45 amphibians a nd 107 reptiles have been recorded (Pérez-Higareda, et al , 1987. Instituto de Biología, UNAM). However, only three records of opalinids exist for the region. (Beltrán, 1941a; Metcalf, 1923). This report on additional collections of opalinids from Los Tuxtlas, intended as a contribution to the study of protozoan simbiosis with vertebrates in Mexico.