| Metabolism of polychaete Neanthes japonica Izuka： relations to temperature, salinity and body weight |
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| 引用本文： | 刘勇,线薇薇,孙世春.Metabolism of polychaete Neanthes japonica Izuka： relations to temperature, salinity and body weight[J].中国海洋与湖沼学报,2009,27(2):356-364. |
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| 作者姓名： | 刘勇 线薇薇 孙世春 |
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| 摘 要： |
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| 关 键 词： | 温度升高 粳稻品种 低盐度 多毛类 体重 代谢 氨氮排泄 方差分析表 |
| 收稿时间： | 21 October 2007 |
Metabolism of polychaete Neanthes japonica Izuka: relations to temperature,salinity and body weight |
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| Liu,Yong,Xian,Weiwei,Sun,Shichun.Metabolism of polychaete Neanthes japonica Izuka: relations to temperature,salinity and body weight[J].Chinese Journal of Oceanology and Limnology,2009,27(2):356-364. |
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| Authors: | Liu Yong Xian Weiwei Sun Shichun |
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| Institution: | (1) Fishery College, Ocean University of China, Qingdao, 266003, China;(2) Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China |
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| Abstract: | Polychaete Neanthes japonica is a species geographically specific in China and Japan with important scientific implication and commercial value. In this
study, the relations of body weight, salinity and temperature to oxygen consumption and ammonia excretion of N. japonica were determined. Three different groups in body weight (large: 2.34±0.36 g, middle: 1.50±0.21 g and small: 0.62±0.12 g) were
set for all experiments. Results show that the body weight is negatively related to the rates of oxygen consumption and ammonia
excretion; and the relationship is significant. The oxygen consumption and ammonia excretion at 24°C decreased at salinity
from 5 to 30 and increased above 30, indicating that both lower and higher salinity are adverse and certain degree of salinity
stress is necessary for enhancing the energy demand. At salinity 30, rising temperature from 18°C to 30°C, the oxygen consumption
increased before 27°C and then decreased. However, the relation of ammonia excretion and temperature seems more complex. Two-way
ANOVA shows that salinity, temperature and body weight all have a significant effect on the oxygen consumption and ammonia
excretion of the worm. Moreover, interaction between salinity/temperature and body weight is also significant. O:N (oxygen/nitrogen)
ratio varies greatly in this case from 5.97 to 463.22, indicating that N. japonica can regulate the type of metabolic substrate against environment changes.
Supported by the National Natural Science Foundation of China (No. 30490233) and the Three-Gorge Project and the Estuarine
Environment (No. SX2004-018) from the Three Gorges Project Construction Committee |
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| Keywords: | Keyword" target="_blank">Keyword Neanthes japonica salinity temperature body weight ammonia excretion Oxygen consumption |
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