大亚湾三种经济贝类的营养生态位及潜在产量评估  

TROPHIC NICHES AND POTENTIAL YIELDS OF THREE ECONOMIC BIVALVES IN DAYA BAY

作　　者：黎辉[1,2] 何慧[1,2] 金启增[1,2] 

机构地区：[1]中国科学院南海海洋研究所大亚湾海洋生物综合实验站,深圳518112 [2]中国科学院南海海洋研究所,广州510301

出　　处：《热带海洋》1999年第4期53-60,共8页

基　　金：中国科学院大亚湾开放站基金课题!(项目批准号 :S95 0 5 )

摘　　要：通过周年4个季度对大亚湾3种主要经济贝类———珍珠贝Pinctadamartensii,华贵栉孔扇贝Chlamysnobilis　和贻贝Pernaviridis的采样、观测和鉴定,分析它们胃肠物中的食物组成及其季节变化,综合分析了它们的营养生态位。结果显示,3种贝类的食物组成相似,食物中以碎屑、碎片最多,其次是浮游植物,主要包括硅藻、甲藻、金藻和蓝藻,而浮游动物含量最少,偶尔见到原生动物、轮虫、枝角类和桡足类的残体或壳。大亚湾水体的年初级生产力为63万t有机碳,推算出大亚湾生态系统中贝类的最大产量约为1600t·km-2,潜在产量为16—160t·km-2。Three economic bivalves,pearl oyster( Pinctada martensii ),scallop( Chlamys nobilis )and mussel ( Perna viridis )were seasonally sampled in the Daya Bay,Guangdong province in 1997.By observing and determining the food compositions and their seasonal variation sin the stomaches and intestines of three bivalves,it is found that the dominant food component is inorganic and organic pieces(over 80%).The second is photoplankton,mainly including diatom,dinoflagellate,Cyanophyta and Chrysophyta.The third is zooplankton,including Protozoa,Cladocera,Copepoda,Rotatoria and larvae of shellfishes.The primary production of the Daya Bay is 6.3×10 7kg organic carbon per year.Thus it can be deduced that the maximum shellfish yield is about 1 600t·km -2 and the potential yield is between 16—160t·km -2 .

关 键 词：大亚湾 贝类 珍珠贝 营养生态位 潜在产量 

分 类 号：S932.6[农业科学—渔业资源] Q959.215.4[农业科学—水产科学]