密度和种间竞争对高原林蛙蝌蚪生长发育的影响

Effects of Density and Interspecific Competition on the Growth and Development of Rana kukunoris Tadpoles

[目的]研究密度和种间竞争对高原林蛙蝌蚪生长发育的影响。[方法]试验组和对照组均设置了高、中、低3个密度水平,试验组将高原林蛙蝌蚪和岷山蟾蜍卵共同饲养,而对照组则单独饲养林蛙蝌蚪,第11天测定了试验组和对照组林蛙蝌蚪的发育阶段、体重、体长、头宽、背宽、尾长。[结果]种间竞争对高原林蛙蝌蚪的发育阶段和背宽都有显著影响。密度对高原林蛙蝌蚪的体重、体长、头宽和尾长都有显著影响。[结论]密度是影响高原林蛙蝌蚪生长发育的重要因素,同时种间竞争也会影响其生长发育。

[Objective]To study the effects of density and interspecific competition on the growth and development of Rana kukunoris tadpoles.[Method]Three density levels（ high,medium,low） were designed in experimental groups and control groups. R. kukunoris tadpoles and Bufo minshanicus eggs were fed together in experimental groups,while R. kukunoris tadpoles were alone fed in control groups. On the 11 thday,the developmental stage,body weight,body length,head width,dorsal width and tail length of R. kukunoris tadpoles were measured. [Result]The interspecific competition had significant effects on the development stages and dorsal width of R. kukunoris tadpoles. Density had significant effects on the body weight,body length,head width and tail length of R. kukunoris tadpoles. [Conclusion]Density was an important factor that influenced the growth and development of R. kukunoris tadpoles,and interspecific competition had influences on their growth and development.