Format

Send to

Choose Destination
See comment in PubMed Commons below
Horm Behav. 2006 Apr;49(4):470-7. Epub 2005 Nov 28.

Elevated testosterone levels and social ranks in female rock hyrax.

Author information

1
Department of Zoology, Tel-Aviv University, Tel Aviv 69978, Israel.

Abstract

In mammals, males maintain significantly higher testosterone (T, 'the male hormone') levels than females throughout the year and are typically dominant over females. Our study of the cooperatively breeding rock hyrax (Procavia capensis) demonstrated a distinct exception. In most hyrax social groups that we studied, adult females were at the highest social rank within the group and showed higher than or equal T levels to males. To our knowledge, this is the first reported instance of adult female mammals demonstrating higher T levels than adult males. However, although T levels significantly correlated with rank in males, in females such correlations were not detected, suggesting a more complex interplay between behavior and endocrine factors in this species.

PMID:
16313907
DOI:
10.1016/j.yhbeh.2005.10.004
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center