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海洋科学  2007 

臭氧对西施舌胚胎孵化率和幼虫摄食生长与成活的影响

, PP. 39-43

Keywords: 臭氧,西施舌(Coelomactra,antiquata),孵化率,幼虫,生长,成活率

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Abstract:

研究了臭氧处理后的海水对西施舌(Coelomactraantiquata)胚胎孵化率、幼虫摄食率、生长率和成活率的影响。结果表明,臭氧处理后的海水的化学耗氧量(COD)及NH4+-N的浓度明显下降。西施舌胚胎在通入臭氧(4.17mg/L)10min的海水中,孵化率最高,为97%,在充入臭氧25min的海水中孵化率最低,为72.7%;西施舌幼虫在充入臭氧10~15min的海水中和未经处理的海水中生长较快;幼虫在充入臭氧5min和10min的海水中成活率有所提高。将幼虫放在多次充入臭氧的海水中培养,再放回未经臭氧处理的海水进行17h和30h恢复,30h后其死亡率达85%,而在充入臭氧时间短的的海水中死亡率较低,为33.3%,表明西施舌幼虫的生理机能受到了臭氧的不可恢复破坏。

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