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威宁趾沟蛙的繁殖生态
引用本文:王延斌,汤春燕,葛传龙.威宁趾沟蛙的繁殖生态[J].动物学杂志,2006,41(2):94-97.
作者姓名:王延斌  汤春燕  葛传龙
作者单位:贵州省毕节学院生物学系,毕节,551700
摘    要:采用野外定期、定点观测与室内观测相结合的方法,于2000年1月21日~2005年2月25日,对威宁趾沟蛙(Pseudorana weiningensis)的繁殖生态进行了研究。结果表明,威宁趾沟蛙的繁殖习性与同属的其他两种趾沟蛙有明显的差异,其繁殖期集中在2月下旬~3月上旬;怀卵量为345.7枚(n=10);产卵量为312.5枚(n=10);威宁蛙卵群呈团状,各卵粒由胶膜粘连成团,卵团平均长6.40 cm;宽3.90 cm;厚为1.44 cm。卵粒的动物极暗褐色,植物极浅黄褐色;卵粒直径为2.0~2.5 mm,连胶膜直径为4.0 mm。卵粒在室内静水中孵化所需时间约20 d,孵出时期为心跳期,在自然环境中该蛙达性成熟所需时间为2年。该蛙无冬眠现象,且在冬季繁殖,这是其最突出的繁殖生态特征之一。

关 键 词:威宁趾沟蛙  繁殖生态
文章编号:0250-3263(2006)02-94-04
收稿时间:2005-09-22
修稿时间:2005-09-222006-01-14

Breeding Ecology of Pseudorana weiningensis
WANG Yan-Bin,TANG Chun-Yan,GE Chuan-Long.Breeding Ecology of Pseudorana weiningensis[J].Chinese Journal of Zoology,2006,41(2):94-97.
Authors:WANG Yan-Bin  TANG Chun-Yan  GE Chuan-Long
Affiliation:Department of Biology, Bijie College, Guizhou 551700, China
Abstract:The breeding ecology of Pseudorana weiningensis was studies by the methods of observation at fixed-position at regular time in field and at room from 1 Jan 2000 to 25 Feb 2005.The results indicate that great difference exists between the breeding habit of P.weiningensis and the other two congeric species.(1) Usually,breeding period of P.weiningensis is mainly between the last ten-days of February and the first ten days of March.The average number of eggs in ovaries is 345.7(n=10),and the number of eggs per clutch is 312.5(n=10).(2) The eggs exist as group.The average length,width and height are 6.40?cm,3.90?cm and 1.44?cm respectively.(3) Color at the animal pole is dark-brown,while the vegetative pole is light yellow brown.(4) The diameter of individual egg is about 4.0?mm,and the value with the exception of jelly coat ranges from 2.0 to 2.5?mm.(5) Hatching time is about 20 days in the lentic water at room temperature.The phase of the hatchling is heart beating stage in the natural environment.It would take two years to reach sexual maturity. No hibernation can be found,which is one of the most important characters of breeding ecology of this species.
Keywords:Pseudorana weiningensis  Breeding ecology
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