烟台四十里湾海区栉孔扇贝同化率周年变化及其与环境的关系

ANNUAL VARIATION IN ABSORPTION EFFICIENCY OF CHLAMYS FARRERI IN SISHILIWAN BAY, YANTAI, AND ITS RELATIONS TO ENVIRONLMENT

于１９９７年６月－１９９８年５月用现场方法测定了烟台四十里湾海区总颗粒物质（ＴＩＭ）、颗粒有机物（ＰＯＭ）现存量和栉孔扇贝同化率（ＡＥ）周年变化，并分析了栉孔扇贝同化率与海区温度、盐度、ＴＰＭ和ＰＯＭ的关系。结果表明，（１）整个海区ＴＰＭ现存量秋季最高，其次为春季和冬季，夏季最低。海区ＰＯＭ含量变化不大，在 １．３４－１．６５ｍｇ／ Ｌ之间。栉孔扇贝同化率在春、夏、秋三季较高，冬季较低，其中在秋末冬初（１１月）最低；（２）栉孔扇贝同化率与温度有明显相关性，与盐度相关性不大；（３）栉孔扇贝同化率与海区ＴＰＭ和ＰＯＭ现存量呈负相关关系，回归方程分别为ＡＥ＝７９．６９４［ＴＰＭ］^（－０．６３３２）（Ｒ~２＝０．７９５５）和ＡＥ＝５２．８４３［ＰＯＭ］~－（１．１０９７）（Ｒ~２＝０．６９２ ５）。

Absorption efficiency (AE) is an important parameter in bioenergetic studies of suspension-feeding bivalves. During June 1997-May 1998, we determined the annual variations of total particulte matter (TPM) biomass, particulate organic matter (POM) biomass and AE of the scallop Chlamys farreri in Sishiliwan Bay, Yantai, with in situ method, and studied the relationships between AE and seawater temperature, salinity, TPM POM. The results suggest that:(1) POM biomass in fall is the highest of all seasons, the next is in spring and the lowest is in summer, the POM biomass is not significantly different among seasons (1.34-1.65mg/L); AE of C farreri is high in spring, summer and fall, is low in winter, especially in November. (2) AE is significantly coagulated with water temperatUre, but poorly correlated with salinity. (3) AE is negatively correlated with TPM and POM biomass, the regression formula are AE=79.694 [TPM] -0.6332 (R2 =0.7955) and AE=52.843[POM] -1.1097 (R2 =0.6925), respectively.