Abstract
It has been suggested that the gestation length of the Pere David's deer is around 280 days, which is significantly longer than any other deer species except the roe deer (approximately 300 days) which exhibits embryonic diapause. The present study was designed to determine whether embryonic diapause exists in the Pere David's deer by accurately monitoring gestation length. There was no difference in gestation length (283-284 days) between animals mated early and later in the breeding season. Hence, although Pere David's deer exhibit a longer gestation period than that predicted from maternal body weight, there is no evidence for seasonal control of implantation. Actual birth weight is as predicted from an interspecific comparison of ungulates. The data imply either that there is an obligate period of embryonic diapause, irrespective of season, or that postimplantation fetal growth rate is slow compared with that in other deer species.
Subject
Developmental Biology,Endocrinology,Genetics,Molecular Biology,Animal Science and Zoology,Reproductive Medicine,Biotechnology
Cited by
15 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献