Abstract: In a Y-maze, the focal female ratlike hamsters (Cricetuus triton) preferred body odor of males to females' or control (P<0.05) ; themale did not show a sexual preference for body odor (P> 0.05), while preferred body odor of conspecific to control, these results indicated that body odor are attractive to the hamster, and the hamster’s response to the odor had sexual difference. The focal hamster spent more time in one of arms of Y-maze with hamster demonstrator than another control arm (P< 0.05 or P < 0.01) ; males spent more time in one of arms with same-sex hamster demonstrator than another with the opposite-sex individual conspecific ( P< 0.01), and females did not spend different time (P > 0.05). The results were mediatedby combination of agonistic behavior and mating patterns. The staged dyadic encounters were conducted in a neutral arena.Paired encounters between both same sexes contained frequent agonistic acts and few amiable acts, and the victors had more attack and flank gland marking (P < 0.05 o r P < 0.01); although both male sand females exhibited less aggression when paired with opposite-sex conspecific, amiable acts were also fewer, and females received males' mounting only on the estrous day of estrous cycle and attacked males on other days of. The above results implied that the hamster was solitary and that f lank gland marking was positively related to agonistic behavior and dominant status. Ratlike hamsters had a typical mating behavior and exhibit multiple intromission followed by multiple ejaculations. Both males' Coolidge effectand females' multiple matings indicated that the hamster was polygynousor promiscuous mating.

Key words: Ratlike hamsters (Cricetulus triton), Breeding season, Odor preference, Sex preference, Social interactions, Mating behavior

摘要： 在Y型迷宫中进行气味选择测定时, 被试大仓鼠偏好异性的气味, 证明身体气味有性吸引和性识别作用。在Y型迷宫进行性别选择测定时, 在雌雄靶鼠个体之间, 被试大仓鼠不表现出性别偏好, 这是攻击行为和交配行为共同影响的结果; 与空白相比较, 被试鼠都选择靶鼠, 说明独居大仓鼠之间存在频繁的探究行为。通过观察箱内对两鼠间的行为关系的观察发现, 异性之间主要有攻击行为和交配行为;同性之间主要发生攻击行为, 同时胜鼠或优势鼠的胁腺标记行为显著多于从属鼠, 说明胁腺标记可以表明优势地位; 雄鼠与非性接受状态的雌鼠相遇时, 攻击行为很少, 但无友好行为,只有简单的雄鼠爬跨雌鼠的行为; 任何陌生的雄鼠与性接受状态的雌鼠相遇发生交配行为,交配结束又相互攻击; 交配行为表现为多次爬跨多次射精; 雄鼠有库利奇(Coolidge) 效应, 雌鼠可以连续接受几只雄鼠的交配, 表明大仓鼠为多配制的婚配制度。从行为关系和交配行为看大仓鼠在繁殖期独居, 无固定的配偶。

关键词: 大仓鼠, 繁殖期, 气味选择, 性别选择, 社群关系, 交配行为