采用室内静水法,研究了虾夷扇贝Patinopectenyessoensis对牙鲆Paralichthvsolivaceus残饵、鱼类粪便、鱼类养殖网箱沉积物及微藻的摄食行为,分析了基于虾夷扇贝的鱼+贝多营养层次的综合养殖(IMTA)模式的可能性。研究结果显示,虾夷扇贝对鱼粪、残饵及鱼类养殖网箱沉积物都可摄食,但对微藻的滤水率和摄食率最高,显著高于其他实验组(ANOVA,P〈0.01);微藻组、残饵组和鱼粪组之间的吸收效率没有显著性差异,但都显著高于沉积物组。吸收效率(AE)与有机物比率(f)呈正相关关系:AE(%)=38.84lnf+72.7(R^2=0.378);对有机物的吸收率(AR)与有机物浓度(POM)呈线性正相关关系:AR=0.118×POM-0.555(R^2=0.329)。假粪产生时颗粒物TPM浓度的阈值为24.09mg/L。
Static method was employed to study feeding behaviors of Japanese scallop Pa- tinopecten yessoensis feeding on different food such as flounder Paralichthys olivaceus feces, re- sidual feed, sediment particulates and mieroalgae. Clearance rate and ingestion rate on microal- gae were significantly higher than the other three experimental groups (ANOVA, P〈0.01). Absorption efficiencies (AE) among microaigae, fish feces and residual feed were not signifi- cantly different, but they were significantly higher than that on sediment particulates. There was a positive correlation between AE and organic content (f) : AE(%)=38. 84lnf+72.7 (R^2=0. 378); The linear relationship between absorption rate (AR) and particulate organic matter (POM) was described as: AR=O. 118XPOM-0.555 (R^2=0.329). Total particulate matter (TPM) threshold for pseudo-feces production was 24.09 mg/L, and the scallop could regulate food intake by pseudo-feces production. Based on the research results, the potential Integrated Multi-trophic Aquaculture (IMTA)of shellfish and fish was proposed.