THE EFFECTS OF TEMPERATURE AND PHOTOPERIOD ON LIFE-HISTORY PARAMETERS OF DAPHNIA-MAGNA (CRUSTACEA, CLADOCERA)
THE EFFECTS OF TEMPERATURE AND PHOTOPERIOD ON LIFE-HISTORY PARAMETERS OF DAPHNIA-MAGNA (CRUSTACEA, CLADOCERA)
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DOI：
10.1111/j.1365-2427.1986.tb01004.x
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发表时间：
1986-10-01
影响因子：
2.7
通讯作者：
KORPELAINEN, H
中科院分区：
文献类型：
--
作者：
KORPELAINEN, H
1.研究了两个常见的和三个稀有的大型水蚤无性系对恒定的温度和光周期条件的生活史响应，观察了控制生长、存活和繁殖的基因的种内变异。2.饲养温度对生长、存活率和所测生殖参数(世代时间、内禀增长率和雄鱼产量)有显著影响，而光周期仅对存活率和雄鱼产量有显著影响。3.在低温(14.0℃)条件下，产仔比例最高。C)和中等光周期(L：D 16：8)。4.讨论了不同生活史的无性系在种群中维持的可能机制。
1. The life history responses of two common and three rare Daphnia magna clones to constant conditions of temperature and photoperiod were investigated, and intraspecific variation in the genes controlling growth, survivorship and reproduction was observed. 2. Rearing temperature had a significant effect on growth, survivorship and on all reproductive parameters measured (generation time, intrinsic rate of increase and male production), while photoperiod influenced significantly only survivorhsip and male production. 3. The maximum proportion of male offspring was produced at a low temperature (14.degree. C) and at a mid-range photoperiod (L:D 16:8). 4. The likely mechanism whereby clones with different life histories are maintained in the population is discussed.