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引用本文:王文侠,舒婷婷,李静,陈非洲.同形溞(Daphnia similis)对幽蚊幼虫反捕食策略的模拟研究.湖泊科学,2013,25(2):266-270. DOI:10.18307/2013.0213
WANG Wenxia,SHU Tingting,LI Jing,CHEN Feizhou.Simulated research on anti-predation reaction of Daphnia similis to Chaoborus larvae. J. Lake Sci.2013,25(2):266-270. DOI:10.18307/2013.0213
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同形溞(Daphnia similis)对幽蚊幼虫反捕食策略的模拟研究
王文侠1,2, 舒婷婷1,2, 李静1,2, 陈非洲1
1.中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008;2.中国科学院大学, 北京 100049
摘要:
枝角类溞会由于捕食者的存在而发生形态、行为、生活史等的变化.通过为期10 d对太湖春、夏季优势种同形溞(Daphnia similis)在有幽蚊幼虫(CL)、无幽蚊幼虫(CK)及培养过幽蚊幼虫的过滤水(FL)3个环境水平的模拟实验,发现同形溞在有幽蚊幼虫和培养过幽蚊幼虫的过滤水处理下平均体长、累积产仔数及平均产仔数均显著大于无幽蚊幼虫组,表明幽蚊幼虫释放的信息素能改变同形溞的体长、产仔数等生活史参数,这种改变会降低同形溞被捕食的风险.说明在自然环境下,幽蚊幼虫等无脊椎捕食者能通过直接捕食和信息素的间接作用共同影响枝角类种群.
关键词:  同形溞  信息素  幽蚊幼虫  表型可塑性  生活史  反捕食策略
DOI:10.18307/2013.0213
分类号:
基金项目:国家自然科学基金项目(31170440)资助
Simulated research on anti-predation reaction of Daphnia similis to Chaoborus larvae
WANG Wenxia1,2, SHU Tingting1,2, LI Jing1,2, CHEN Feizhou1
1.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P.R.China;2.University of Chinese Academy of Sciences, Beijing 100049, P.R.China
Abstract:
Daphnia exhibits diverse morphological,behavioral and life-history responses to the kairomones of predators.A 10-day simulated experiment was conducted on anti-predation reaction of Daphnia similis,a dominant species in Lake Taihu,to invertebrate predator Chaoborus larvae.The experiment had three treatments: the presence of Chaoborus larvae (CL),control without Chaoborus larvae or filtered water (CK) and no Chaoborus larvae but with the filtered water that had cultured Chaoborus larvae the day before (FL).The results showed that the average body length,average number of offspring and cumulative number of offspring of D.similis in the CL and FL treatments were significantly higher than those in the CK treatment,which suggested that the release of kairomones from Chaoborus larvae can alter the life history traits of D.similis.These alterations can reduce the predation risk of D.similis.Our results indicate that invertebrate predator can affect the cladoceran population through both direct predation and release of the kairomones in the field.
Key words:  Daphnia similis  kairomones  Chaoborus larvae  phenotypic plasticity  life history  anti-predation strategy
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