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1997年~ 2 0 0 0年在伏牛山区对大鲵的繁殖生物学进行了初步调查 .繁殖期雌雄鉴别主要依据泄殖孔形态 ,Ⅳ -Ⅴ龄大鲵性腺发育成熟 ,最小繁殖个体为♀ 35 0g ,♂ 30 0g ,雌雄性比为 1∶0 9,产卵前雌性成熟系数可达3 4 5%.本区大鲵 5至 9月均可产卵 ,但多集中于初秋 ,产卵地点在洛阳、伊河、白河支流上游洞穴中 .15℃~ 2 0℃时 ,孵化期为 35天~ 42天 ,孵出后 1个月左右 ,仔鲵即进入冬眠 .“,”The investigation had been made on the breeding biology of giant salamanders (Andrias davidianus) in the Funiu Maiutains from 1997 to 2000.Mature males and females can be identified by the size and shape of their cloaca during the breeding season.At the fifth year after hatching,the giant salamanders become sexually mature.The minimum of females for breeding is 350g,and the males is 300g.Their sex ratio(♀∶♂)is 1∶0 9 during the breeding season.The mature coefficient of the female (The weight of ovaries/the total body weight) is above 3.45% before spawning.The period of spawning is from May to September,and mostly in early Autumn in the area.The breeding areas are always located in the upper section of the streams.The hatching period is 35~42 days in 15℃~21℃ water.About one month affter the eggs hatched,the salamander larvae go into hibernation.