The influence of urinary and fecal odors on ovarian function in coexisting Acomys species

Rudi Van Aarde, Abraham Haim

Research output: Contribution to journalArticlepeer-review


Nocturnal golden spiny mice, Acomys russatus, become diurnal in the presence of congeneric common spinymice, A. cahirinus, or to chemical signals released by them. Here we report on the influence of signals from fresh urine and feces released by A. cahirinus on aspects of the estrous cycle of A. russatus. The results of our study show that the length of the estrous cycle of A. russatus is not influenced by the presence of odors released from A. cahirinus. However, the frequency of occurrence of post-ovulatory increases in plasma progesterone concentrations suggests that the incidence of ovulation in A. russatus is affected by signals produced by the urine and feces of A. cahirinus. The mechanisms involved in the apparent suppression of ovulation or the formation of a functional corpus luteum require further investigation.

Original languageEnglish
Pages (from-to)261-265
Number of pages5
JournalIsrael Journal of Zoology
Issue number2
StatePublished - 1999

Bibliographical note

Funding Information:
The study was conducted during a sabbatical supported to one of us (RJvA) by the Foundation of Research Development of South Africa and the University of Haifa (Oranim Campus). We would like to thank H. Kosik for maintaining the study colonies.

ASJC Scopus subject areas

  • Animal Science and Zoology


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