Ecological stoichiometry for explaining habitat segregations in freshwater copepods

用于解释淡水桡足类栖息地隔离的生态化学计量

• 批准号: 23570015
• 负责人: MAKINO Wataru
• 金额: $ 3.49万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23570015/
• 关键词: 生態化学量論; ヒゲナガケンミジンコ; ニッチ分割; 種間競争; プランクトン

The effects of algal phosphorus content on the development of freshwater calanoid copepods were investigated for two groups of species (lowland and highland groups). Using chemostats, the cellular C:P ratio of a cryptomonad species was manipulated, and the excess amount of the alga was supplied to copepods, whose postembryonic development was observed individually. With decreases in algal phosphorus content the development of copepods were severely retarded in both of the groups. It was also revealed that the survivorship of individuals in lowland groups was low when temperature was low. Thus the relative importance of temperature may be stronger than that of algal phosphorus content for habitat separations observed between the two groups of copepods.

以低地和高原两类群为研究对象，研究了藻类磷含量对淡水类鱿鱼桡足类发育的影响。利用趋化剂控制隐殖藻的细胞C:P比，并将多余的藻类提供给桡足动物，分别观察其胚胎后发育情况。随着藻磷含量的降低，两组桡足类动物的发育均严重迟缓。温度低时，低地种群的个体存活率较低。因此，温度的相对重要性可能比藻类磷含量对两类桡足动物栖息地分离的影响更大。

项目成果

Finding copepod footprints: a protocol for molecular identification of diapausing eggs in lake sediments

寻找桡足类足迹：湖泊沉积物中滞育卵的分子鉴定方案

• DOI: 10.1007/s10201-013-0404-1
• 发表时间: 2013
• 期刊: Limnology
• 影响因子: 1.6
• 作者: Wataru Makino;Hajime Ohtsuki;Jotaro Urabe
• 通讯作者: Jotaro Urabe