应用于贝类生理生态学研究的生物沉积法

绝大多数软体动物门瓣鳃纲Ｌａｍｅｌｌｉｂｒａｎｃｈｉａ(又名双壳纲Ｂｉｖｉｌｖｉａ)动物 ,如贻贝 (Ｍｙｔｉｌｉｄａｅ)、扇贝 (Ｐｅｃｔｉｎｉｄａｅ)、牡蛎 (Ｏｓｔｒｅｉｄａｅ)等 ,属于滤食性动物 ,这些动物通过纤毛摆动、鳃和唇瓣过滤水体中的悬浮颗粒物 (包括浮游藻类、浮游细菌、中型动物和有机碎屑等 ) ,代表着一种摄食机制。双壳贝类在自然界水域的栖息范围比较广泛 ,包括河流、淡水湖、咸水湖、河口湾以及各种浅海和深海环境 ,但以沿岸海水环境为最重要的栖息地 ,其种类多 ,数量大3] 。近些年来 ,海水双壳贝类养殖在世界范…

Biodeposition Method used in Bivalval Physio-Ecological Studies

Biodeposition method, a recently developed method used in studies on physio-ecological characteristics of bivalval mollusks, including clearance rate (CR), ingestion rate (IR), absorption efficiency (AE) and energy budget, is reviewed in this paper. The method estimates feeding and absorption rates through measurements of suspended particles and biodeposit production. The main assumption of this method is that ingested particulate inorganic matter can be used as an inert tracer of feeding and digestive processes. The method is based on feeding responses that are integrated over long time scales, reducing the variability on the measurements affecting growth parameters associated to instantaneous responses.