Year: 2008
Type: article
Abstract: The sessile suspension feeding ascidian, Styela clava, plays an important role in the functioning of estuarine systems. The feeding selectivity of S. clava was examined using standard physiological techniques in terms of particle sizes and diet concentrations. Styela clava increased its retention efficiency (the proportion of available particles retained in ascidian) with increasing particle size at a lower diet concentration [expressed as particulate organic matter (POM)] from 2.11 to 10.06 mg POM L−1, and the highest retention was reached for 5–20 μm particles. With increasing diet concentration to 20.12 mg POM L−1, S. clava retained small particles (<3.5 μm) more efficiently and large ones (>15 μm) less efficiently. The selectivity of ascidian with different sizes was similar at the same concentration. At every diet concentration, larger ascidians retained more 5–20 μm cells than the smaller ones. All these results indicate that S. clava possesses a particle selection mechanism that may affect the zooplankton communities to a certain degree.
Source: Aquaculture Research
Authors: Ai-li Jiang, Zhen Yu, Wen-gui Cai, Chang-hai Wang
Institutions: Yantai University, Key Laboratory of Guangdong Province
Language: English
Subfield: Aquatic Science
Domain: Life Sciences
Open Access status: bronze
OpenAlex ID: W1962012018