论文部分内容阅读
鼠类不育控制已成为我国草原鼠害有效控制的发展趋势。为明确不育剂对荒漠草原害鼠种群繁殖的控制作用,2011年在内蒙古阿拉善荒漠区采用春季一次性投饵的方法,研究复合不育剂EP-1对子午沙鼠Meriones meridianus、三趾跳鼠Dipus sagitta和小毛足鼠Phodopus roborovskii 3种啮齿动物优势种群的控制作用。结果显示,不育剂EP-1致使3种雄鼠的睾丸明显萎缩且下降率降低;春季子午沙鼠和三趾跳鼠的睾丸、附睾和精囊腺3项脏器系数均极显著低于对照区(P<0.01),睾丸下降率均显著低于对照区(P<0.05);小毛足鼠5月和10月睾丸脏器系数和4—10月睾丸下降率均显著低于对照区(P<0.05),且持续时间较长。不育剂EP-1导致3种雌鼠子宫明显水肿、外壁变薄、体积变大、孕鼠平均胎仔数减少,4月子午沙鼠和三趾跳鼠的子宫脏器系数与宽度均显著高于对照区(P<0.05),5月3种雌鼠的平均胎仔数均显著低于对照区(P<0.05)。表明不育剂EP-1对3种荒漠啮齿动物优势种群的繁殖起到了有效的控制作用。
Mouse infertility control has become the development trend of effective control of grassland rodents. In order to clarify the control effect of infertile on the population reproduction of rodent pest in desert steppe, the method of one-off spring feeding in Alashan Desert of Inner Mongolia in 2011 was used to study the effect of compound inoculant EP-1 on Meriones meridianus, The control effect of three dominant rodent populations on Dipus sagitta and Phodopus roborovskii. The results showed that the infertility agent EP-1 caused the testes of three kinds of males to shrink significantly and the descending rate decreased. The three organ coefficients of testis, epididymis and seminal vesicle in the gerbils of the gerbils were significantly lower than those of the control (P <0.01), and the rate of testicular descent was significantly lower than that of the control (P <0.05). The testicular organ coefficient and testicular descent rate in April and October in May and October were significantly lower than that in control <0.05), and the duration is longer. Infertility agent EP-1 resulted in obvious edema and thinning of outer wall in three kinds of female rats, and the average litter size of pregnant mice decreased. The coefficient and width of uterine organs of Meriones unguiculatus and Thrips were significantly higher in April In the control area (P <0.05), the average litter size of three females in May was significantly lower than that in the control area (P <0.05). The results showed that the infertility agent EP-1 effectively controlled the breeding of three dominant populations of desert rodents.