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Sex determination and age estimation in the White‐cheeked gibbon anatomical and behavioural features

Sex determination and age estimation in the White‐cheeked gibbon anatomical and behavioural features mean of four per day during late pregnancy (E, 4 .O pg/mgCr or more). Intense interest in caring for other 99’s infants can be correlated with the rise in total oestrogen levels to 4.0 pg/mgCr or more. During this time pregnant p p begin cradling, inspecting and grooming all infants in the group. Caretaking behaviour continues until approximately two weeks before parturition when it ceases abruptly. This may be correlated with the fall in Et levels to below 4 * O pg/mgCr. The discomfort of the pregnant p appears to increase during this period, as she continually changes her sitting position. She also fingers her vaginal opening which has become noticeably dilated. This continues to dilate as Et levels drop, and the red inguinal area fades to white as parturition approaches. CONCLUSIONS Urinary steroid monitoring in our 9 Douc langurs has provided insight into their reproductive status. We have shown that we can identify fertile as well as pregnant p p, in addition to which we are able to monitor pregnancy and foetal well-being. The analysis of a series of random samples of urine will also allow the prediction of parturition. More work is needed to demonstrate further http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Zoo Yearbook Wiley

Sex determination and age estimation in the White‐cheeked gibbon anatomical and behavioural features

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References (9)

Publisher
Wiley
Copyright
Copyright © 1981 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0074-9664
eISSN
1748-1090
DOI
10.1111/j.1748-1090.1981.tb01979.x
Publisher site
See Article on Publisher Site

Abstract

mean of four per day during late pregnancy (E, 4 .O pg/mgCr or more). Intense interest in caring for other 99’s infants can be correlated with the rise in total oestrogen levels to 4.0 pg/mgCr or more. During this time pregnant p p begin cradling, inspecting and grooming all infants in the group. Caretaking behaviour continues until approximately two weeks before parturition when it ceases abruptly. This may be correlated with the fall in Et levels to below 4 * O pg/mgCr. The discomfort of the pregnant p appears to increase during this period, as she continually changes her sitting position. She also fingers her vaginal opening which has become noticeably dilated. This continues to dilate as Et levels drop, and the red inguinal area fades to white as parturition approaches. CONCLUSIONS Urinary steroid monitoring in our 9 Douc langurs has provided insight into their reproductive status. We have shown that we can identify fertile as well as pregnant p p, in addition to which we are able to monitor pregnancy and foetal well-being. The analysis of a series of random samples of urine will also allow the prediction of parturition. More work is needed to demonstrate further

Journal

International Zoo YearbookWiley

Published: Jan 1, 1981

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