Effect of Fouling Organisms on Food Uptake and Nutrient Release of Scallop Chlamys nobilis in Daya Bay
Effect of Fouling Organisms on Food Uptake and Nutrient Release of Scallop Chlamys nobilis in Daya Bay
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大亚湾污损生物对扇贝吸食和养分释放的影响
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
Huang Liang
中科院分区：
文献类型：
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作者：
Huang Liang
于2006年4月和6月进行了污损生物对华贵栉孔扇贝（Chlamys nobilis）食物吸收和营养盐释放的影响的室内试验，研究了污损生物对华贵栉孔扇贝叶绿素α和总颗粒物（TPM）的吸收速率以及氨氮、亚硝酸盐、硝酸盐和磷酸盐的释放速率。污染扇贝和清洁扇贝对叶绿素α和TPM的吸收速率存在显著差异（P0.001）和氨和亚硝酸盐释放率而硝酸盐吸收率则无显著差异（P > 0.001（P0.05）.污染扇贝消耗磷酸盐，而清洁扇贝释放磷酸盐。叶绿素α的吸收速率存在显著差异（P0.001）和氨和亚硝酸盐释放率TPM摄取率与对照组比较差异无统计学意义（P > 0.001（P0.05）和硝酸盐吸收率（P0.05）.污染扇贝释放磷酸盐，而清洁扇贝消耗磷酸盐，因此，研究表明，污损生物对浮游植物的耗竭和水体中氨氮浓度的增加有重要作用，污损扇贝与清洁扇贝之间存在食物竞争。
Laboratory experiments were conducted to measure the effect of fouling organisms on food uptake and nutrient release of scallop Chlamys nobilis in April and June 2006.The uptake rates of chlorophyll α and total particulate matter(TPM),the release rates of ammonia,nitrite,nitrate and phosphate were investigated.Results show that in April,there is a significant difference between fouled and clean scallops in chlorophyll α and TPM uptake rates(P0.001) and in ammonia and nitrite release rates(P0.001).However,there is no significant difference in nitrate uptake rates(P0.05).Fouled scallops consume phosphate while clean scallops release phosphate.In June,there is a significant difference in chlorophyll α uptake rates(P0.001) and ammonia and nitrite release rates(P0.001).There is no significant difference in TPM uptake rates(P0.05) and nitrate uptake rates(P0.05).Fouled scallops release phosphate while clean scallops consume phosphate.Therefore,the study shows that fouling organisms contribute much to phytoplankton depletion and concentration increase of ammonia in water.There is also food competition between fouled and clean scallops.