【摘要】 １９９５年４－６月，在吉林省长春市对花背蟾蜍的种群生态进行了研究。对采集的标本以体长为指标，根据体重体长的相关关系图及生殖腺的剖检结果，将种群划分为当年幼体组（体长１１０－２０４ｍｍ）、亚成体组（体长３３２－４２０ｍｍ，体重３３－７５ｇ）、成体组（体长４４０－６９２ｍｍ，体重６７－１８５ｇ）。亚成体组和成体组的年龄锥体呈倒置型。雄体多于雌体，♂∶♀在繁殖期最大，繁殖后趋向平衡。样地内不同生境的种群数量变动与繁殖、摄食及温、湿度等因素有关。更多还原

【Abstract】 The study on the population ecology of Bufo raddei was carried out in Changchun, Jilin Province from April to June in 1995. Based on the correlation between body weight and body length, the population is divided into three age groups:larva group (body length from 11.0 mm to 204 mm), subadult group (body length from 332 mm to 420 mm, body weight from 33g to 75g) and adult group (body length from 440mm to 692mm, body weight from 67g to 185g). The age pyramid based on the two latter age groups was upside down. During reproduction, the number of females more than that of males. Sex ratio(♂∶♀) was highly skewed during reproduction, and gradually reached the ratio 1∶1 after reproductive season. Population density was affected by reprouction, temperature and humidity.更多还原