COMPARISON OF MOTILITY PATTERNS OF SPERM ASPIRATED FROM AMPLECTANT PAIRS OF XENOPUS-LAEVIS, BY ELECTROEJACULATION AND FROM THE TESTES

Studies on anuran spermatozoa have been restricted to the use of testi cular sperm. Although these studies have been effective in creating ba seline data, the motility parameters of ejaculate spermatozoa could pr esent a clearer picture of the reproductive physiology. Methods were d evised to aspirate sperm from amplectant males and collect the ejacula te from males. Sperm motion was then studied quantitatively and the va rious sperm motion parameters compared. Further research is necessary to determine whether Wolffian duct and cloacal secretions play a role in altering sperm motion characteristics of anuran testicular spermato zoa.