Eley R M, Else J G, Gulamhusein N, Lequin R M
Institute of Primate Research, National Museums of Kenya, Nairobi.
Am J Primatol. 1986;10(3):229-235. doi: 10.1002/ajp.1350100303.
To test whether the male could contribute to the birth peak seen in both wild and captive vervets, testicular volume and peripheral testosterone concentration were measured monthly in nine adults throughout a 14-month period. Volume was an average of 15% greater during the months of June to September, the period of natural breeding activity in the wild, than at other times of the year. Testosterone concentration rose throughout the time period but did not correlate with testicular volume. Quarterly biopsies of the right testis in animals either used for or withheld from breeding revealed the presence of spermatozoa and the existence of spermatogenesis throughout the year. There was no correlation of testicular volume with breeding status or biopsy. If these results from individually caged animals are representative of group-caged and wild animals, then such small seasonal changes are unlikely to affect year-round breeding. Therefore, a physiological contribution by the male to natural birth peaks seen in the wild and captivity is not readily apparent.
为了测试雄性是否会促使野生和圈养黑长尾猴出现生育高峰，在14个月的时间里，每月对9只成年雄性黑长尾猴测量其睾丸体积和外周睾酮浓度。在6月至9月（野生环境下的自然繁殖期），睾丸体积平均比一年中的其他时间大15%。睾酮浓度在整个时间段内都有所上升，但与睾丸体积并无关联。对用于繁殖或未用于繁殖的动物的右侧睾丸进行季度活检，结果显示全年都存在精子和精子发生现象。睾丸体积与繁殖状态或活检结果并无关联。如果这些单独笼养动物的结果代表了群体笼养和野生动物的情况，那么如此微小的季节性变化不太可能影响全年的繁殖。因此，雄性对野生和圈养环境中出现的自然生育高峰的生理贡献并不明显。
