大型海藻和滤食性贝类在鱼类养殖系统中的生态效应

IOCAS-IR > 海洋环流与波动重点实验室

	大型海藻和滤食性贝类在鱼类养殖系统中的生态效应
其他题名	ECOLOGICAL EFFECTS OF MACROALGAE AND FILTER-FEEDING BIVALVE IN FISH GUI/HIRE
	胡海燕
学位类型	博士
	2002
学位授予单位	中国科学院海洋研究所
学位授予地点	中国科学院海洋研究所
学位专业	海洋生物学
关键词	龙须菜海湾扇贝许氏平鲉生态效应营养盐
摘要	无机营养盐是海水鱼类养殖主要的污染物之一.近年来,在“清洁生产”和“生态养殖”理论的指导下,将鱼类与其他养殖种类进行混养的综合养殖模式成为研究的热点.该文在室内封闭水体中进行了许多平鲉（Ssbastesschlegeli,同种异名黑鲪）分别和龙须菜（Gracilarialemaneiformis）、海湾扇贝（Argopectenirradians）的混养试验,监测了水体理化因子和生物因子的变化规律,测定了养殖生物的生长情况,藻贝在鱼类养殖系统中的生态效应.
其他摘要	Dissolved inorganic nutrient(DIN) is one of the main pollutions from marine fish culture. In recent years, guided by the "Cleaner Production" and "Ecological culture", integrated culture pattern of fish and other species was paid great attention to. In this paper, different experiments in indoor culture tanks such as: S. schlegeli and G. leimineiformix polyculture, 5'. schlegeli and A. irradhws polyculture were conducted. Through investigations on the variation of physi-chemical and biological factors and growth of the cultural species, the ecological effects of G. lemaiwiformis and A. imuiians in the culture systems were discussed. The main results are following as: In fish monoculture tanks, in Spring, ammonia was the main part of inorganic nitrogen with the contents of nitrate increasing greatly later, and the contents of phosphate were low; while in Autumn, both the contents of ammonia and phosphate were high. G. leinaneijonnis could effectively remove inorganic nutrients from the water body. In Autumn, compared to monoculture tank, the polyculture tanks had 77.24% ammonia and 65,96% phosphate lower after 23 days, as well as 69.45% ammonia and 26.73% phosphate lower after 40 days. While in Spring tanks with G. lenutneiformis had 90% ammonia lower than monoculture tank after 3 weeks. Temperature had greater effects on the growth of G. Lemaneiformix than it did on the nutrient assimilate rate. The average daily growth rate showed that G. lemaneiformix grew well in spring and poorly in autumn, and had negative growth rate when the water tempereture was below IO"C. Besides G. Lemaneiformix may suppress the growth of phyloplankton. The contents of Chla., POC and PN in the water had obvious relationship either in Spring or in Autumn, but POM had correlation with them only in Spring. Fish and scallop polycullure experiment showed that the contents ofChla., POC and PN in the water were low while the contents of inorganic nulrient were high, which may caused the large scale death of A irradians. In the same time , food scarcity may be another main reason limiting the growth ol'A. irradians.
页数	66
语种	中文
文献类型	学位论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/1037
专题	海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	胡海燕. 大型海藻和滤食性贝类在鱼类养殖系统中的生态效应[D]. 中国科学院海洋研究所. 中国科学院海洋研究所,2002.

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