池养雄性白鱀豚性自慰行为与血清睾酮浓度之间的关系  

RELATIONSHIPS BETWEEN SEXUAL MASTURBATION BEHAVIOR AND SERUM TESTOSTERONE LEVELS OF A CAPTIVE MALE BAIJI~*

作　　者：陈道权[1] 赵庆中[1] 王克雄[1] 张先锋[1] 魏卓[1] 匡新安[1] 龚伟民[1] 王小强[1] 刘仁俊[1] 王丁[1] 

机构地区：[1]中国科学院水生生物研究所,武汉430072

出　　处：《动物学报》2002年第5期611-617,共7页ACTA ZOOLOGICA SINICA

基　　金：中国科学院创新项目"江豚和白豚繁殖行为特征及生态适应机理的研究" (KSCX2 1 0 3 );中国科学院水生生物研究所创新领域前沿项目"长江豚类保护生物学研究" (2 2 0 10 3 )资助~~

摘　　要：自 1996年 3月至 1998年 12月 ,作者采用放射免疫分析法每月 1次测定雄性白豚 (Lipotesvexillifer)“淇淇”血清睾酮浓度。春季每天 1次 ,其它季节每三天 1次 ,每次 1h ,用目标动物取样法观察“淇淇”的行为。结果发现 ,性自慰 (腹面贴池壁、伸出阴茎 )行为的发生频率和血清睾酮激素水平都有周期性变化 ,春季为高峰期 ,秋季有 1个小峰 ,性自慰行为与血清睾酮激素浓度两者的周期较为一致。从性自慰行为和血清睾酮激素水平季节变化 ,推测出“淇淇”性腺活动的周期性变化 ,活动期为 2～ 10月 ,血清睾酮浓度为 2 4 8～ 9 6 6ng/ml;春季高峰在 4月前后 ,血清睾酮浓度为 3 4 4～ 9 6 6ng/ml;秋季小峰在 10月 ,血清睾酮浓度为 3 33～4 2 5ng/ml;11月至次年 1月为性腺活动相对静止期 ,血清睾酮浓度为 1 2 4～ 2 85ng/ml。白豚是一种季节性繁殖动物 ,繁殖高峰期在 4月前后。The Baiji or Chinese River Dolphin (Lipotes vexillifer) are found only in the middle and lower reaches of the Yangtze River, China and are one of the most endangered cetacean species in the world. A male baiji was stranded in the Chenglingji section of the middle reaches of the Yangtze River on 11 January 1980 and removed to the Baiji Aquarium of the Institute of Hydrobiology of the Chinese Academy of Sciences. This animal, known as “Qi Qi” has been successfully kept in captivity since that time. In order to compare relationships between sexual masturbation behavior and serum testosterone levels in this male baiji, behavioral observation and analyses of serum testosterone levels from blood samples were carried out from March 1996 through December 1998.Blood samples were taken from the dorsal aspect of the tail fluke between 10:00 and 11:00 a.m. around the 10th of each month. Serum testosterone levels were determined using radio immunoassay (RIA) techniques. Behavioral observation was conducted for one hour(from 09: 00 to 10: 00 a.m.)everyday in spring and one hour in every three days in other seasons using the focal animal sampling method. Following a pilot study, the behaviors of ventrally contacting the wall of the pool and erection of the penis were defined as sexual masturbation behaviors and the frequency of both were recorded per hour. Serum levels of testosterone showed two peaks in 1997.The first peak was from April to June and the second smaller peak was in October. The highest peak was 6 73 ng/ml, recorded in April. The lowest level was 1 24 ng/ml, recorded in January. Two peaks were once again observed in 1998.The first peak was from February to June and the second smaller peak was on October. The highest peak was 9 66 ng/ml, recorded in April and the lowest 1 79 ng/ml recorded in January. The frequency of penile erection on the day before blood sampling showed one peak in spring from March to June, and another smaller peak in September in 1997.However, in 1998, this occurred

关 键 词：池养雄性白Ji豚 性自慰行为 血清睾酮 关系 

分 类 号：Q959.841[生物学—动物学] Q958.12