摘要
本项研究将野外捕获的成年雄性高原鼠兔（Ｏｃｈｏｔｏｎａｃｕｒｚｏｎｉａｅ）分３组进行不同光制的饲养，以检验光周期对其神经内分泌─—生殖轴功能的影响：（１）长光照组睾丸及附属性腺的重量和血浆睾酮水平均明显高于自然光组（ｐ＜０．０５）和短光照组（ｐ＜０．０１）。（２）长光照组的松果腺重量（１．５±０．１毫克，ｎ＝１５）和褪黑激素含量（８９．７±５．８微微克／松果腺），均显著低于其它两组。（３）自然光组和短光照组性腺的显著萌发表明，在高原鼠兔季节性繁殖的年周期中，其神经内分泌─—生殖轴对春分前短光照的抑制作用具有不应期。
The present experiment was performed in order to study whether photoperiods af-fect the body weight ,gonadal weight ,plasma testosterone concentration and pineal mela-tonin content in male plateau pika (Ochotona curzoniae) during their restoration phase.The main results are as follows :(1) The weights of testes (932. 3 ± 79. 3 mg/pair/100gBW, n = 15) , epididymis( 171. l ± 13. 8mg/pair/100gBW , n= 15) , deferent duct (7. 9±0. 5mg/pair/100gBW , n= 15 ) and seminal vesicle (47. 7 ± 5. 3mg/ 100gBW , n= 15 ) of the long photoperiod groupwere higher than that of the short photoperiod group and the natural light group. (2)Plasma testosterone (p<0. 001) concentration (1537. 4± 143. 5 pg/ml , n= 15) of thelong photoperiod group was still higher than that of the other two groups. (3) Theweight of pineal gland ( 1. 5 ± 0. 1mg , n= 15 ) and the content of melatonin (89. 7± 5. 8pg/pineal gland , n= 6) of long photoperiod group were lower than that of the other twogroups.The results suggested that the change of neuroendocrine-gonad axis to the outsideof photoperiod has sentitivity. Therefore it may be infer utilization the change of photope-riod to plateau pika in the ecological environment could be regulate the seasonal breed-ing.
出处
《兽类学报》
CSCD
北大核心
1994年第2期154-159,共6页
Acta Theriologica Sinica
基金
国家自然科学基金
中国科学院海北高寒草甸生态系统定位站基金
国家教委博士点基金
关键词
鼠兔
光周期
性腺
睾酮
裉黑激素
Plateau pika (Ochotona curzoniae)
Photoperiod
Gonads
Testosterone
Melatonin Northweast Plateau Institute of Biology
Academia Sinica
