| HUANG Liang,WU Ying,WAN Ruijing,ZHANG Jing. 2012. Carbon, nitrogen and phosphorus stoichiometry in Japanese anchovy (Engraulis japonicus) from the Huanghai Sea, China. Acta Oceanologica Sinica, (4):154－160 |
| Carbon, nitrogen and phosphorus stoichiometry in Japanese anchovy (Engraulis japonicus) from the Huanghai Sea, China |
| Carbon, nitrogen and phosphorus stoichiometry in Japanese anchovy (Engraulis japonicus) from the Huanghai Sea, China |
| Received:March 05, 2011 Revised:September 21, 2011 |
| DOI：10.1007/s13131-012-0229-5 |
| Key words:Japanese anchovy (Engraulis japonicus) nutrient elements the Huanghai Sea |
| 中文关键词: Japanese anchovy (Engraulis japonicus) nutrient elements the Huanghai Sea |
| 基金项目:The National Key Basic Research Program from the Ministry of Science and Technology of China under contract Nos 2006CB400601 and 2011CB409801; Science Fund for Creative Research Groups of the National Natural Science Foundation of China under contract No. 41021064. |
| Author Name | Affiliation | E-mail | | HUANG Liang | College of Resources and Environment Science, East China Normal University, Shanghai 200062, China
College of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang 332005, China | huangliang2002@126.com | | WU Ying | State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China | | | WAN Ruijing | Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences, Qingdao 266071, China | | | ZHANG Jing | State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China | |
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| Abstract: |
| Generally, nutrient cycle is closely related to the element distribution in biomass and the population dynamics in ecosystems. Carbon, nitrogen and phosphorus in Japanese anchovy (Engraulis japonicus) of different body lengths from the Huanghai Sea (Yellow Sea) were determined to better understand their variability and reasons during its life history. The mean content was 45.12%, 10.12% and 2.02% for C, N and P, respectively. Significant differences in C, N and P elemental composition were found among different sizes, which could be explained by varying proportions of storage compounds in whole body fish, and varying degrees of ossification. Considering abundant resources in Japanese anchovy, it was an important P-pool in the cycle of P. Moreover, the excreted N/P ratio was significantly different in fishes of different sizes, especially at high gross growth efficiency. In the past two decades, overexploitation tended to cause smaller body length in the community structure of anchovy, which presumably changed the nutrient cycle in food webs of the Huanghai Sea. Exptrapolation of the results indicates that Japanese anchovy may be important for conveying nutrient in the Huanghai Sea. |
| 中文摘要: |
| Generally, nutrient cycle is closely related to the element distribution in biomass and the population dynamics in ecosystems. Carbon, nitrogen and phosphorus in Japanese anchovy (Engraulis japonicus) of different body lengths from the Huanghai Sea (Yellow Sea) were determined to better understand their variability and reasons during its life history. The mean content was 45.12%, 10.12% and 2.02% for C, N and P, respectively. Significant differences in C, N and P elemental composition were found among different sizes, which could be explained by varying proportions of storage compounds in whole body fish, and varying degrees of ossification. Considering abundant resources in Japanese anchovy, it was an important P-pool in the cycle of P. Moreover, the excreted N/P ratio was significantly different in fishes of different sizes, especially at high gross growth efficiency. In the past two decades, overexploitation tended to cause smaller body length in the community structure of anchovy, which presumably changed the nutrient cycle in food webs of the Huanghai Sea. Exptrapolation of the results indicates that Japanese anchovy may be important for conveying nutrient in the Huanghai Sea. |
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