长期社群隔离使大仓鼠近交回避和亲属善待行为消失

Disappearance of nepotistic behavior and inbreeding avoidance after long-term isolation in rat-like hamsters Cricetulus triton

为研究大仓鼠利用表型匹配识别亲属和近交发生的可能性 ,我们将大仓鼠单只隔离饲养 ,8个月后 ,经在Y型迷宫中测试 ,发现它们在同胞和非同胞之间不表现出偏好和友好行为 ,攻击行为和交配行为也没有表现出差异。结果表明 ,大仓鼠同胞经长期的分离后 ,其亲属善待行为和近交回避消失 。

This study investigated the possibility of kin recognition by phenotype matching and inbreeding in a solitary rodent, the rat like hamster Cricetulus triton. After rat like hamsters were individually caged for 8 months from weaning, they did not display significant preferences between siblings and non siblings and there were no significant differences between amicable behavior, agonistic behavior and mating in a Y maze. Our results showed that nepotistic behavior and inbreeding avoidance after long term isolation in rat like hamsters Cricetulus triton were lost and that they might not recognize kin by phenotype matching mechanism.