摘要
以两性配对共居至交配或生仔作不同熟悉处理 ,在Y字型选择箱中分别观察棕色田鼠、根田鼠的择偶行为和配偶识别。结果如下 :(1)棕色田鼠雌雄两性均表现出对熟悉异性或配偶的喜好倾向 ;(2 )在根田鼠中 ,只有雌性表现出对熟悉雄鼠或配偶的选择倾向 ,雄鼠无明确的选择取向 ;(3)每种雌性田鼠对 2种熟悉性不同的同种雄性的嗅舔时间均有显著差异性 ,而每种雄性田鼠对 2种熟悉性不同的同种雌性的嗅舔时间均无显著差异性。这些结果表明 :(1)熟悉性对棕色田鼠择偶行为的影响大于对根田鼠的影响 ;(2 )嗅舔时间差异可反映不同田鼠的配偶识别能力 ,熟悉性对棕色田鼠配偶识别能力的影响大于对根田鼠的影响 ;(3) 2种田鼠配偶识别的性别差异的一致性 ,提示这 2种田鼠的雌性配偶识别能力均强于雄性田鼠 ,而雌鼠的配偶识别能力可能取决于雌鼠受交配或分娩刺激的生理状态 ;(4 )棕色田鼠室内所表现的择偶行为的两性熟悉性特征与其单配制有关 ,根田鼠所表现的择偶行为的雌性熟悉性特征与其一雄多雌制有关。
The effects of different terms of cohabitation on mate choice and mate recognition were investigated in the laboratory colonies of mandarin voles (Microtus mandarinus) indicating a monogamous species, and root voles (M. oeconomus) being a generally polygynous species. In cages with pairs of conspecific opposite sex voles starting at the age of at least 60 days, short term cohabitation (2～7 days) was made to establish mating familiarity, and long term cohabitation (more than 25 days) to the solidified partnership of breeding at least one litter. Then, male and female preferences for the familiar (or partner) vs. strange conspecific heterosexual voles were examined in a Y shaped maze, of which two stimulus voles were tethered in two choice chambers, respectively. (1) Both mandarin vole females and males showed preferences for the heterosexual familiars over strangers, and for partners over strangers. In root voles, only females showed preferences for the familiar males over strange males, and for the partner males over strange males, but males made no choices between familiar and strange females, and between partner and stranger females. (2) In both vole species, females preferentially associated with conspecific partner males more than with familiar males, but males displayed no preference. (3) In both vole species, females spent significantly more time sniffing/licking conspecific familiar or partner males than strange males, but this was not the case in male voles. Our results demonstrate: (1) mate choice and mate recognition based on familiarity is more intensive in mandarin voles than in root voles; (2) sniff variant can be regarded as an indication of mate recognition, and the intensity of mate recognition is related to familiarity degree; (3) differential sniff between female and male of two vole species indicates the sexual dimorphism that mate recognition of females is more sensitive than that of males in both vole species, based on familiarity; (4) mate recognition of female voles may b
出处
《动物学报》
SCIE
CAS
CSCD
北大核心
2002年第2期167-174,共8页
ACTA ZOOLOGICA SINICA
基金
国家自然科学基金 ( 39870 119)
中国科学院海北生态系统实验站开放基金 ( 9816 5 3)~~
关键词
棕色田鼠
根田鼠
共居
熟悉性
择偶行为
配偶识别
单配制
一雄多雌制
Mandarin vole (Microtus mandarinus) , Root vole (M. oeconomus), Cohabitation, Familiarity, Mate choice, Mate recognition, Monogamy, Polygyny
