雌性川金丝猴的邀配行为与尿液雌二醇水平的关系  

Relationship between sexual solicitations and urinary estradiol in the female sichuan golden monkey (Rhinopithecus roxellana)

作　　者：阎彩娥[1] 蒋志刚[1] 李春旺[1] 曾岩[1] 谭妮妮[2] 夏述忠[3] 

机构地区：[1]中国科学院动物研究所,北京100080 [2]成都动物园,成都610081 [3]上海野生动物园,上海201300

出　　处：《动物学报》2003年第6期736-741,共6页ACTA ZOOLOGICA SINICA

基　　金：中国科学院知识创新工程 (KSCX2 1 0 3;KSCX2 SW 118;KSCX3 IOZ 0 2 )项目;国家重大基础研究与发展规划项目(G2 0 0 0 0 4680 5 )资助~~

摘　　要：20 0 1年 10～ 12月及 2 0 0 2年 9月～ 11月 ,我们对上海野生动物园一群半散养条件下的川金丝猴进行了研究 ,记录了群体内的 4只成年雌猴的邀配行为 ,同时收集了观察对象的晨尿 ,利用放射免疫法测定其中的雌二醇含量。结果显示 ,在未受孕的月经周期内 ,雌猴的邀配行为集中在雌二醇高峰前后 ,雌猴在卵泡期和黄体期邀配频次显著下降 ,说明邀配行为受雌二醇水平的调控。同一群体内不同个体的月经周期并不同步 ,邀配高峰互不重叠 ,这可能是雌猴避免相互竞争产生的结果。利用雌二醇测定结果推断受孕日期 ,发现进入妊娠期后雌猴仍然频繁地向雄猴邀配 ,并得到雄猴的响应。妊娠期内的雌二醇水平虽有波动 ,但都高于月经周期内排卵前的雌二醇高峰 ,邀配频次与雌二醇水平没有明显的相关性 ,因此这一时期的邀配行为不能归结为激素作用的结果 。To evaluate the relationship between solicitation behaviors and estradiol levels in Sichuan golden monkeys ( Rhinopithecus roxellana ), we observed a group of Sichuan golden monkeys under semi wild conditions in the Shanghai Wild Animal Park from Oct. to Dec. in 2001 and from Sept. to Nov. in 2002. We recorded the frequency of sexual solicitation behavior of the four adult females in the family unit. During behavior observation we also collected urine samples in the early morning. Samples were frozen until analyses. We measured urinary estradiol levels by using radioimmunoassay. Levels of creatinine in the urine samples were measured using the standard Jaffe reaction. Hormone levels are expressed as the ratio to creatinine in order to calibrate the dilution of urine samples. In 2001 each female in Shanghai Wild Animal Park experienced two or three estrous cycles. When aligned to the estradiol peak in each female’s cycle, the frequency of female solicitation varied systematically with change in estradiol level. Solicitations only occur around the ovulatory period of the female’s cycle. The frequency of solicitation rose to a peak following the peak of estradiol level. The strong correlations between solicitation and estradiol level suggests that ovarian steroids modulate sexual behavior during the nonfertile cycle in the Sichuan golden monkey. The peak frequency of solicitation by different females in the same family in 2001 were not synchronized but evenly distributed. In 2002 the dates becoming pregnancy of the four females are also separated (Sep.22, 10, 17, 18 and 22). Asynchrony of solicitation may serve to avoid mating competition between females in the same family. Social status can influence the stage of oestrus. Females with high social status become pregnancy earlier than others. The first one becoming pregnancy during our observation is the ordinate one in the group. Based on the level of urinary estradiol we could estimate the date of impregnation. We found that females even frequently solicited

关 键 词：川金丝猴 月经周期 妊娠期 邀配行为 雌二醇 

分 类 号：Q958[生物学—动物学]