摘要
采用克隆培养法,研究了几种主要生态因子的波动对多刺裸腹氵蚤雄体发生的影响和该氵蚤对上述生态因子波动的敏感程度.结果表明,无论是一次性剧烈刺激,还是持续性渐进刺激,该氵蚤均未能直接产生雄体,即氵蚤的孤雌生殖雌体不能直接转变为混交雌体(两性生殖雌体);在光照、温度、饵料密度、pH值持续性渐进波动时,该氵蚤种群的内禀增长率分别为0.7748、0.7481、0.6539和0.6310d-1ind-1,比对照组降低0.9%、4.0%、16.4%和19.3%,表明该氵蚤对饵料密度和pH值的波动较为敏感。
Studies with clonal culture show that female M.macrocopa did not produce male progeny directly,or,in other words,the parthenogenetic(amictic) female could not transform into microtic(amphoteric) female,when suffered from one off acute or durative progressive stimulation.Under durative progressive stimulation by illumination,temperature,food density or pH ,the intrinsic rates of increase were 0.7748,0.7481,0.6539 and 0.6310 d -1 ind -1 ,0.9%,4.0%, 16.4 % and 19.3% less than the control,respectively,indicating that the animal was more sensitive to the fluctuation of food density and pH followed by temperature.
出处
《应用生态学报》
CAS
CSCD
2000年第1期135-137,共3页
Chinese Journal of Applied Ecology
基金
国家自然科学基金!资助项目 (39770 579)
关键词
多刺裸腹溲
雄体发生
世代交替
温度
PH值
Moina macrocopa , Male occurrence, Amphoteric female, Parthenogenetic female, Ecological factors.
