|
|||||
|
|
| Effect of Fouling Organisms on Food Uptake and Nutrient Release of Scallop （Chlamys nobilis, Reeve） Cultured in Daya Bay | |
| 作者单位： | SU Zhenxia（Huaihai Institute of Technology, Lianyungang 222005, P. R. China;South China Sea Institute of Oceanology, Guangzhou 510301, P. R. China） ; XIAO Hui（Huaihai Institute of Technology, Lianyungang 222005, P. R. China） ; YAN Yan（South China Sea Institute of Oceanology, Guangzhou 510301, P. R. China） ; HUANG Liangmin（South China Sea Institute of Oceanology, Guangzhou 510301, P. R. China） ; |
| 基金项目： | National Science Foundation of Huaihai Institute of Technology，国家自然科学基金 |
| 摘 要： | Biofouling is an important factor that affects the bivalve farming industry. Fouling organisms may reduce growth and survival rate of the cultured species. Fouler are often filter feeders, so they are potential competitors for food resource with the cultured species. The present study was conducted to measure the impact of fouling on food uptake and nutrient release in April and June, 2006 in Daya Bay near Guangzhou, China. Results showed that fouling organisms had significant effect on food uptake and nutrient release. The chlorophyll a uptake rate of fouled scallops was 7.53Lh-1±1.416Lh-1 and 11.94Lh-1±2.497Lh-1 in April and June, respectively, significantly higher than those of cleaned scallops, i.e., 4.23 Lh-1 ±2.744Lh-1 and 2.57Lh-1± 1.832 Lh-1 respectively.The consumption of total particulate matter by fouled scallops in April and June was 5.52Lh-1±0.818Lh-1 and 3.07Lh-1±0.971 Lh-1,respectively; the corresponding results for cleaned scallops are 2.49Lh-1 ±0.614Lh-1 and 2.37± 1.214Lh-1, respectively. Fouling increased ammonia release significantly. The ammonia release rate of fouled scallops was 33.81Lh-1±7.699Lh-1 and 76.39Lh-1 ±9.251Lh-1 in April and June, while cleaned scallops released 2.46Lh-1± 0.5 1 1Lh-1 and 7.23Lh-1± 1.026Lh-1 ammonia, respectively. Phosphate release of fouled scallops was 22.72Lh-1 ± 9.978 Lh-1 in June and cleaned scallops released phosphate 6.01Lh-1 ±0.876 Lh-1 in April. Therefore, fouling contributed much to food reduction and concentration increase of ammonia and phosphate in water. |
| 关 键 词： | 扇贝 污底 食物获取 养分释放 |
| 收稿时间： | 2006-09-26 |
| 修稿时间： | 2007-09-20 |
Effect of fouling organisms on food uptake and nutrient release of scallop (<Emphasis Type="Italic">Chlamys nobilis</Emphasis>, Reeve) cultured in Daya Bay |
|
| Authors: | Su Zhenxia Xiao Hui Yan Yan Huang Liangmin |
| Institution: | 1. Huaihai Institute of Technology, Lianyungang 222005, P. R. China;South China Sea Institute of Oceanology, Guangzhou 510301, P. R. China 2. Huaihai Institute of Technology, Lianyungang 222005, P. R. China 3. South China Sea Institute of Oceanology, Guangzhou 510301, P. R. China |
| Abstract: | Biofouling is an important factor that affects the bivalve farming industry. Fouling organisms may reduce growth and survival rate of the cultured species. Fouler are often filter feeders, so they are potential competitors for food resource with the cultured species. The present study was conducted to measure the impact of fouling on food uptake and nutrient release in April and June, 2006 in Daya Bay near Guangzhou, China. Results showed that fouling organisms had significant effect on food uptake and nutrient release. The chlorophyll a uptake rate of fouled scallops was 7.53Lh−1±1.416Lh−1 and 11.94Lh−1±2.497Lh−1 in April and June, respectively, significantly higher than those of cleaned scallops, i.e., 4.23Lh−1±2.744Lh−1 and 2.57Lh−1±1.832Lh−1 respectively. The consumption of total particulate matter by fouled scallops in April and June was 5.52Lh−1±0.818Lh−1 and 3.07Lh−1±0.971Lh−1, respectively; the corresponding results for cleaned scallops are 2.49Lh−1±0.614Lh−1 and 2.37±1.214Lh−1, respectively. Fouling increased ammonia release significantly. The ammonia release rate of fouled scallops was 33.81Lh−1±7.699Lh−1 and 76.39Lh−1±9.251Lh−1 in April and June, while cleaned scallops released 2.46Lh−1±0.511Lh−1 and 7.23Lh−1±1.026Lh−1 ammonia, respectively. Phosphate release of fouled scallops was 22.72Lh−1±9.978Lh−1 in June and cleaned scallops released phosphate 6.01Lh−1±0.876Lh−1 in April. Therefore, fouling contributed much to food reduction and concentration increase of ammonia and phosphate in water. |
| Keywords: | scallop Chlamys nobilis fouling food uptake nutrient release |
| 本文献已被 万方数据 SpringerLink 等数据库收录！ | |