114.
The energy flow of
Branchiura sowerbyi was studied for the first time in China in a shallow macrophytic lake, Biandantang Lake, Hubei Province. The energy flow
was calculated from the measurement of flesh production (12.5241kJ/m
2a), egestion (517.7302kJ/m
2a), metabolism (38.3273 kJ/m
2a), and excretion (4.3798kJ/m
2a). The net growth efficiency of the species is about 22.7%, which accords well with the generally reported value for oligochaetes.
In addition, the relationship between starvation respiration (
R, mgO
2/ind·d), wet weight (
Ww, mg) and temperature (
T, °C) were also measured, with the regression function being
R=0.008
Ww
0.736 e
0.050T.
Project supported by NSFC (30270278, 3960019), the foundation of the government of Hubei Province (No. 2000J109), and the
foundation of Ecological Station, CAS in the Institute of Hydrobiology.
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