文章摘要
王俊.太平洋牡蛎生物沉积作用的研究[J].水产学报,2005,29(3):
太平洋牡蛎生物沉积作用的研究
Study on biodeposition by oyster Crassostrea gigas
投稿时间:2014-03-13  修订日期:2014-03-13
DOI:
中文关键词: 太平洋牡蛎 生物沉积 影响因素
英文关键词: Crassostrea gigas  biodepo sition  effect factors
基金项目:国家重点基础研究发展计划(973计划)
作者单位地址
王俊 中国水产科学研究院黄海水产研究所农业部海洋渔业资源可持续利用重点开放实验室 中国水产科学研究院黄海水产研究所农业部海洋渔业资源可持续利用重点开放实验室
摘要点击次数: 1321
全文下载次数: 918
中文摘要:
      2001年3-9月,在自然养殖状态下对太平洋牡蛎的生物沉积及其对物质输运的影响进行了研究.结果显示,太平洋牡蛎能加速海洋中颗粒物质的沉积,太平洋牡蛎的生物沉积率分别为小个体(壳长80~95mm)26.3~69.9 mg?ind-1?d-1,中等个体(壳长95~110 mm)37.5~83.7 mg?ind-1?d-1和大个体(壳长110~125 mm)44.1~103.7 mg?ind-1?d-1.太平洋牡蛎的生物沉积与其壳长呈正相关线性关系,与其干组织重呈正相关的指数关系,而单位重量的生物沉积则与壳长和干组织重分别为负相关的线性和幂指数关系.海水温度和环境中饵料数量是影响太平洋牡蛎的生物沉积的重要因子.
英文摘要:
      Studies on marine bivalves have demonstrated that suspension-feeding bivalves scan influence the function of ecosystems to a great extent. In dense populations, bivalves can dominate total ecosystem metabolism, nutrient cycling , and grazing of primary producers. Oy ster ( Crassostrea gigas ) is a promising species, which has been widely cultured in the neritic waters in the Bohai Sea and the Yellow Sea. Oyster farming has been bringing not only great economic benefit, but also great burden for the neritic ecosystem due to filtering food and releasing metabolic production. To estimate the effects on neritic eco system of o yster cultivation, the experiments were monthly conducted near Xiao Qingdao Island from March to September 2001. The biodepo sition by Crassostrea gigas and the effects of biodeposition on material flux were measured under natural cultivation conditions. Crassostrea gigas used, with the body sizes of 79. 8- 125. 0 mm shell height and 0. 96- 3. 35 g dry tissue weight, were collected from the oyster farm south of Qingdao . Oyster was div ided into three groups, according to their body size, they were small size ( 80- 95 mm) , middle size ( 95- 110 mm) and big size ( 110- 125 mm) . Each group was arranged for five parallel experiments. The results show that the biodeposition rates was 26. 3- 69. 9 mg.. ind- 1..d- 1, 37. 5- 83. 7 mg.. ind- 1..d- 1 and 44. 1- 103. 7 mg.. ind- 1..d- 1 for small size, middle size and big size of Crassostrea gigas, respectively. The amount of biodepo sit was correlated positively with the shell length and weight, but the per gram body weight biodepo sit negatively. With the water temperature rising form March to September, the chlorophyll a concentration in sea water increased from 1. 6.. 0. 3..g..L- 1 to 7. 3.. 0. 5..g..L- 1 and reached the peak values at 18. 3 .. in June, then went down until September, either the TPM, POM, POC and PON. As a consequence, the biodeposition by each group oyster increased from 26. 3 mg.. ind- 1..d- 1 to 69. 9 mg.. ind- 1..d- 1, 37. 5 mg.. ind- 1..d- 1 to 83. 7 mg.. ind- 1..d- 1 and 44. 1 mg.. ind- 1..d- 1 to 103. 7 mg.. ind- 1..d- 1, then decreased to 49. 0 mg.. ind- 1..d- 1, 76. 9 mg.. ind- 1..d- 1 and 88. 8 mg.. ind- 1..d- 1 in Aug ust or September , respectively . Those demonstrated that water temperature and food concentration were important factors to affect biodeposition of Crassostrea gigas .
HTML   查看全文   下载PDF阅读器
关闭

手机扫一扫看