Aksel S, Diamond E J, Hazelton J, Wiebe R H, Abee C R
Lab Anim Sci. 1985 Feb;35(1):54-7.
In a squirrel monkey breeding colony, two distinct groups of females were observed during the breeding season, December through March. One had low and the other had high estradiol (E2) and progesterone (P) concentrations. The conception rate in females with high E2 and P values was 74%. However, only 25% of monkeys with low steroid concentrations became pregnant during the breeding season. This study showed that all mature females in a colony may not be cycling concurrently and that two serum P measurements obtained at four-day intervals may be utilized to detect noncycling monkeys during the breeding season.
在一个松鼠猴繁殖群体中，在12月至次年3月的繁殖季节观察到两组不同的雌性。一组雌二醇（E2）和孕酮（P）浓度低，另一组浓度高。E2和P值高的雌性受孕率为74%。然而，在繁殖季节，类固醇浓度低的猴子只有25%怀孕。这项研究表明，群体中所有成熟雌性可能不会同时处于发情周期，并且间隔四天进行的两次血清P测量可用于在繁殖季节检测未处于发情周期的猴子。
