【作者】 戴强； 戴建洪； 李成； 刘志君； 王跃招；

【Author】 DAI Qiang, DAI Jian-hong, LI Cheng, LIU Zhi-jun, WANG Yue-zhao (Chengdu Institute of Biology, The Chinese Academy of Sciences, 610041 Chengdu)

【机构】 中国科学院成都生物研究所；

【摘要】 <正> 本文以峨眉山的仙姑弹琴蛙(Rano daunchina Chang)蝌蚪作为猎物,该地区潜在的入侵物种克氏原螯虾(Procambrus clarkii)为捕食者,于冬季实验考察仙姑弹琴蛙蝌蚪对陌生入侵捕食者的反捕行更多还原

【Abstract】 We experimentally studied anti-predator behaviors of tadpoles of Rana daunchina to Red swamp crayfishes (Procambrus clarkii), a potential invasive species of lowland of Emei Mountain. Our experiment was a 3 ×3× 2 factorial design with predator diet (levels: no predator, vegetable-fed or tadpole-fed), tadpole age (developmental stage 25, 26-30 and 31-35) and tadpole experience (with or without previous experience of predators) as the main effects. Experienced tadpoles spent significantly less time on activity and significantly more time on rest and hiding in refuge (P<0.01). The interaction effect of tadpole experience and predator diet also had significant effect on activity of tadpoles (P<0.05). Tadpole age and predator diet had no significant effect on anti-predator behavior of tadpoles (age, P=0.133; predator diet, P=0.265). Experienced tadpoles generally reduced activity, spent more time on rest and hiding, and showed no ability of learning to recognize crayfishes. It indicated that tadpoles of Rana daunchina possioly over response to the novel predator and thus suffer high level of sublethal effect once Red swamp crayfishes intrude the lowland of Emei Mountain.更多还原