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学科主题: Marine & Freshwater Biology
题名: Studies on the biology of Chaoborus flavicans (Meigen) (Diptera : Chaoboridae) in a fish-free eutrophic pond, Japan
作者: Ping Xie ; Toshio Iwakuma ; Koichi Fujii
通讯作者: Xie, P, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: Chaoborus flavicans ; population dynamics ; planktonic and benthic ; eutrophication
刊名: HYDROBIOLOGIA
发表日期: 1998
卷: 368, 期:0, 页:83-90
收录类别: SCI
部门归属: Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; Natl Inst Environm Studies, Tsukuba, Ibaraki 305, Japan; Univ Tsukuba, Inst Biol Sci, Tsukuba, Ibaraki 305, Japan
摘要: Population dynamics of Chaoborus flavicans larvae of various instars was studied from November 1986 to December 1987 in a eutrophic, fish-free pond, Japan. First and 2nd instar larvae were observed from late April to late October, indicating a reproductive period of about half a year. C. flavicans overwintered in the 4th instar larvae. In water column samples, total density of all instars was 680-23 680 m(-2), and pupal density 0-2 600 m(-2); larvae of the Ist, 2nd, and 3rd instars showed 5-6 density peaks in 1987, suggesting that 5-6 generations occur during a year (peaks of the 4th instar larvae were not clear, probably due to their longer development than those of younger instars). In sediment samples, no Ist and 2nd instar larvae were found, 3rd instar larvae were found occasionally but density of the 4th instar larvae was 280-18 600 m(-2), and pupal density varied between 0-502 m(-2). Fouth instar larvae accumulated in sediment in the cold season and in the water column in the warm season; high temperature and low oxygen concentration were the most important factors limiting the distribution of larvae in the sediment in summer in the NIES pond. The dry weight of total C. flavicans larvae was 0.08-4.2 g m(-2) in sediment samples and 24-599 mu g l(-1) (0.10-2.40 g m(-2)) in water column samples. Comparisons of maximum densities in the NIES pond in different years and in waters of different trophic status show that density is generally higher in eutrophic than in oligotrophic habitats.
WOS记录号: WOS:000076259700009
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/10220
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Recommended Citation:
Ping Xie; Toshio Iwakuma; Koichi Fujii.Studies on the biology of Chaoborus flavicans (Meigen) (Diptera : Chaoboridae) in a fish-free eutrophic pond, Japan,HYDROBIOLOGIA,1998,368():83-90
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