Title Observation on behavior of the large suspension feeding bivalve Atrina pectinata lisckeana under natural conditions
Authers Kengo SUZUKI, Setuo KIYOMOTO, and Yuichi KOSHIISHI
Keywords Pen shell, Atrina pectinata lisckeana, valve movement, data logger
Citation Bull. Fish. Res. Agen. supplement No. 19,17-25, 2007
Abstract
To evaluate an effect of environmental changes on the pen shell Atrina pectinata lisckeana, we conducted research on the valve movement of the pen shell; an indicator of their activity. We developed two types of data logger to measure the valve movement of the pen shells under field conditions. One is a wire-communication type for regions close to the shore while the other is an underwater type for offshore regions. The measurements were performed in a tidal flat and in a subtidal station in Ariake bay in 2004. The measurement in tidal flat revealed a distinct emersion effect, where the pen shells were closing their valves and remaining motionless during the emersion. This type of motionless period did not, however, occur when they were submerged. Measurement in the subtidal station revealed post-transplantation burrowing behavior and unusual single close-open actions during a storm.
URI http://www.fra.affrc.go.jp/bulletin/bull/bull19/03.pdf