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- Title
TemperatureDependent Growth and Life Cycle of Nemoura sichuanensisPlecoptera: Nemouridae in a Chinese Mountain Stream.
- Authors
Qinghua Cai; Jiankang Liu
- Abstract
Plecoptera constitute a numerically and ecologically significant component in mountain streams all over the world, but little is known of their life cycles in Asia. The life cycle of Nemoura sichuanensisand its relationship to water temperature was investigated during a 4year study in a headwater stream known as the Jiuchong torrent of the Xiangxi River in Central China. Size structure histograms suggest that the life cycle was univoltine, and the relationships between the growth of Nemoura sichuanensis, physiological time, and effective accumulated water temperature were described using logistic regressions. The growth pattern was generally similar within year classes but growth rates did vary between yearclasses. Our field data suggest a critical thermal threshold for emergence in Nemoura sichuanensis, that was close to 9 °C. The total number of physiological days required for completing larval development was 250 days. The effective accumulated water temperature was 2500 degreedays in the field. Development during the life cycle increased somewhat linearly with the physiological time and the effective accumulated water temperature, but some nonlinear relationships were best developed by logistic equations. © 2009 WILEYVCH Verlag GmbH & Co. KGaA, Weinheim
- Subjects
CHINA; NEMOURA; LIFE cycles (Biology); GROWTH; PHYSIOLOGICAL effects of temperature; WATER temperature; RIVERS; LOGISTIC regression analysis; INSECT larvae; INSECT development
- Publication
International Review of Hydrobiology, 2009, Vol 94, Issue 5, p595
- ISSN
1434-2944
- Publication type
Article