Movement of cynomolgus and rhesus monkey spermatozoa collected from the lower female reproductive tract

Esmail Behboodi, David F. Katz, James W. Overstreet, Andrew G Hendrickx

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Postcoital (pc) cervical mucus was collected in 73 menstrual cycles of cynomolgus monkeys and in 43 cycles of rhesus monkeys at 2,6,10,30 hr pc. Videomicrography was used to analyze sperm numbers and movement in the mucus. Both cynomolgus and rhesus monkeys had comparable populations of motile sperm in the mucus at 2 hr pc. However, by 6 hr pc, cervical mucus from cynomolgus monkeys contained twice as many total sperm and motile sperm as mucus from rhesus monkeys (P <.05). Mean swimming speeds of the free‐swimming cervical sperm were similar for the two species at this time. No motile sperm were recovered in mucus from rhesus monkeys at 30 hr pc. In cynomolgus monkeys, however, 14 of the 26 animals examined at 30 hr pc had motile sperm in their mucus. These sperm exhibited lower percent molility, percent free‐swimming sperm, and swimming speed than those sperm observed at 6 hr pc. Uterine sperm were collected by transcervical or transuterine aspiration from cynomolgus monkeys. In the transcervical technique, sperm were successfully obtained in four of nine animals examined at 6 hr and in four of five animals at 30 hr pc. The percentage of motile sperm in the uterine fluid was high, 82% ± 4%, and the swimming speeds (86 ± 2μm/sec) were higher than those observed in cervical mucus. Approximately 5–10% of the uterine sperm exhibited swimming motions similar to the hyperactivated motility seen in most mammals. These findings indicate that the sperm cervical mucus interaction in vivo in cynomolgus monkeys has more similarities to the human situation than does the interaction in rhesus monkeys.

Original languageEnglish (US)
Pages (from-to)333-342
Number of pages10
JournalGamete Research
Issue number3
StatePublished - 1989


  • cervical mucus
  • hyperactivation of sperm
  • motility of sperm

ASJC Scopus subject areas

  • Genetics
  • Developmental Biology


Dive into the research topics of 'Movement of cynomolgus and rhesus monkey spermatozoa collected from the lower female reproductive tract'. Together they form a unique fingerprint.

Cite this