珠海城区臭鼩身体大小和脏器指数的性别及季节差异  

Sexual and Seasonal Variations of Visceral Organs Index in Suncus murinus from the Urban Region of Zhuhai City,China

作　　者：母华强[1] 陈艳 MU Huaqiang;CHEN Yan(Zhuhai No.2 High School,Zhuhai,519000,China)

机构地区：[1]广东省珠海市第二中学,珠海519000

出　　处：《野生动物学报》2022年第2期386-393,共8页CHINESE JOURNAL OF WILDLIFE

基　　金：珠海市教育研究基金项目(2017KTG13)。

摘　　要：小型哺乳动物的身体和脏器重是动物对环境适应的近似指标,可随环境条件的变化进行适应性调整。以珠海市城区环境中分布的臭鼩(Suncus murinus)为研究对象,2019年5月—2021年3月测定其身体大小及脏器指数的性别差异和季节动态,以深入理解其脏器对环境的生理适应机制。结果显示:(1)臭鼩身体大小的性二态特征明显,雄性明显大于雌性(P<0.001),但雄性大多数脏器指数低于雌性。(2)哺乳雌性的肠指数(5.18)显著高于未怀孕雌性(4.63)和怀孕雌性(4.57)(P<0.05)。(3)雄性臭鼩肝、脾指数,以及怀孕雌性和哺乳雌性的脾指数均夏季最高(P<0.05)。(4)雄性的胃、肠指数秋季最高(P<0.05),而怀孕雌性则春季最高(P<0.05)。The body size and visceral organs of small mammals are considered as an indicator for adaptation to the environment,and can adapt to changes in environmental conditions.To further understand the physiological mechanism of adaptation of visceral organs to the environment in Suncus murinus,we conducted a study on the sexual and seasonal variations of visceral organ index in S.murinus in the urban region of Zhuhai,China from May 2019 to March 2021.Results showed that:(1)the sexual size dimorphism of S.murinus was evident as males were larger than females(P<0.001),but most of the visceral organs indices in males were lower than in females;(2)the intestinal index of lactating females(5.18)was significantly higher than those of nonpregnant females(4.63)and pregnant females(4.57)(P<0.05);(3)the liver and spleen indices of males,pregnant and lactating females were the highest during summer(P<0.05);the stomach and intestinal index of males were the highest during autumn(P<0.05),whereas those of pregnant females were the highest during spring(P<0.05).

关 键 词：臭鼩 脏器 性二态 季节 繁殖状态 

分 类 号：Q954[生物学—动物学]