Urinary testosterone levels in the male blind mole rat (Spalax ehrenbergi) affect female preference
Urinary testosterone levels in the male blind mole rat (Spalax ehrenbergi) affect female preference
复制标题
DOI：
10.1016/s0031-9384(99)00249-8
复制
发表时间：
2000-05-01
影响因子：
2.9
通讯作者：
Terkel, J
中科院分区：
文献类型：
--
作者：
Gotterich, A;Zuri, I;Terkel, J
本研究调查了雌性盲鼹鼠对四组雄性鼹鼠的性吸引力：(A)圈养的完整雄性；(B)被困在野外的完整雄性；(C)注射睾酮的圈养雄性；(D)圈养的去势雄性。第一部分：用放射免疫法测定血睾酮、雄烯二酮和双氢睾酮(DHT)水平，用GC-MS法测定尿睾酮水平。第二部分研究了男性尿睾酮水平与其对女性吸引力的关系。与圈养的完整或去势的动物相比，野外动物和注射睾丸素的动物的血液和尿睾酮水平更高：其他两组动物的尿睾酮水平均未检测到。与圈养的完整或去势的鼹鼠相比，野外动物和注射了睾酮的动物的血液中雄烯二酮水平也更高。在所有四个试验组中都没有检测到血液中的双氢睾酮水平。雌性鼹鼠选择与血液和尿液中睾酮水平较高以及血液中雄烯二酮水平较高的雄性大鼠呆在一起的时间比与这些荷尔蒙水平较低的大鼠在一起的时间更长。由于雄性大鼠的求爱和性行为同时受到血液和尿液中高水平的睾酮以及血液中高水平的雄烯二酮的影响，我们认为，圈养的鼹鼠的求爱和其他性行为水平低可能与雌性缺乏对这些雄性的吸引力有关，这三个参数都表现出低水平。(C)2000 Elsevier Science Inc.保留所有权利。
This study investigated the sexual attraction of female blind mole rats to four groups of male mole rats: (a) intact males raised in captivity; (b) intact males, trapped in the field; (c) captive males injected with testosterone; (d) captive castrated males. In the first part we measured blood testosterone, androstenedione, and dihydrotestosterone (DHT) levels, by radioimmunoassay; and urine testosterone levels, measured by GC-MS. The second part examined the relationship between urine testosterone levels in males and their attractiveness to females. Higher blood and urine testosterone levels were found in the field animals and in those injected with testosterone compared to captive intact or castrated animals: urine testosterone levels in the two other groups were not detectable. Blood androstenedione levels were also higher in the field animals and in those injected with testosterone compared to captive intact or castrated mole rats. Blood dihydrotestosterone levels were not detectable in all four experimental groups. Female mole rats chose to spend a longer period of time next to males with high blood and urine testosterone levels and high blood androstenedione levels than next to those with lower levels of these hormones. Because courtship and sexual behavior are influenced both by high levels of blood and urine testosterone and high levels of blood androstenedione, we suggest that the low levels of courtship and other sexual behavior in captive mole rats may be related to the lack of female attraction to these males, which display low levels of all three parameters. (C) 2000 Elsevier Science Inc. All rights reserved.