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引用本文:张镇,陈非洲,周万平.三种湖泊水体的自然食物对隆腺溞(Daphnia carinata)生长繁殖的影响.湖泊科学,2009,21(5):700-704. DOI:10.18307/2009.0514
ZHANG Zhen,CHEN Feizhou,ZHOU Wanping.Effect of natural food from three levels of eutrophic lakes on the growth and reproduction of Daphnia carinata. J. Lake Sci.2009,21(5):700-704. DOI:10.18307/2009.0514
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三种湖泊水体的自然食物对隆腺溞(Daphnia carinata)生长繁殖的影响
张镇1,2, 陈非洲1, 周万平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.中国科学院研究生院, 北京 100049
摘要:
用花神湖、玄武湖、南湖的湖水培养隆腺溞,探讨不同营养水体的自然食物对隆腺溞生长、繁殖的影响.花神湖氮、磷营养盐浓度和浮游植物生物量均很低,用花神湖湖水培养的隆腺溞生长缓慢,个体在没有繁殖前就全部死亡.玄武湖氮、磷营养盐浓度和浮游植物生物量均低于南湖,但用玄武湖湖水培养的隆腺溞在生长速率、平均体长、生殖量上均高于用南湖湖水培养的隆腺溞.实验结果表明:不同营养盐条件下,湖泊中浮游植物的组成有较大的差别,这种差别会对浮游动物生长、繁殖产生影响;在浮游植物种类和生物量适宜时,隆腺溞有较大的生殖量.浮游植物种类组成、浮游植物生物量的过低或过高都会抑制隆腺溞的生长、生殖.
关键词:  生长、繁殖  食物  隆腺溞  营养水平
DOI:10.18307/2009.0514
分类号:
基金项目:中国科学院领域前沿课题(KZCX2-YW-419);国家自然科学基金项目(30600069)
Effect of natural food from three levels of eutrophic lakes on the growth and reproduction of Daphnia carinata
ZHANG Zhen1,2, CHEN Feizhou1, ZHOU Wanping1
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.Graduate School of Chinese Academy of Sciences, Beijing 100049, P.R.China
Abstract:
A laboratory experiment was conducted to evaluate the effect of different natural food on the growth and reproduction ofDaphnia carinata. The natural food came from the three lakes: Lake Huashen, Lake Xuanwu and Lake Nanhu with differentconcentrations of nitrogen and phosphorus. D. carinata had the lowest growth rate and all died before starting reproduction with thefood from Lake Huashen. Both nutrient concentrations and phytoplankton biomass in Lake Xuanwu were lower than that in LakeNanhu. However, the growth rate, the average body length and the reproductive capacity of D. Carinatacultured with the food from LakeXuanwu were higher than that in Lake Nanhu. The experiment showed that the nutrition level of nitrogen and phosphorus and the foodconcentration had an evident influence on the growth and reproduction of D. Carinata. When the nutrition level of nitrogen andphosphorus and the food concentration in the lakes were too high or low, the growth and reproduction of D. Carinatawould be restrained.
Key words:  Growth and reproduce  food  Daphnia carinata.  nutrition level
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