Study on the Behaviors of Rapana venosa Feeding on Different Bivalves

• Main Authors: Xizhen XU, Jinghui FANG, Jianguang FANG, Zhixin ZHANG, Zengjie JIANG, Yitao ZHANG, Junwei WANG, Yuze MAO
• Format: Article in Journal/Newspaper
• Language: English; Chinese
• Published: Science Press, PR China 2023
• Subjects: rapana venosa; feeding preference; feeding rhythm; feeding process; feeding rate; Aquaculture. Fisheries. Angling; SH1-691; Crassostrea gigas
• Online Access: https://doi.org/10.19663/j.issn2095-9869.20220414001; https://doaj.org/article/cd7a6a292da14f66b1837831accca1b9

Rapana venosa is primarily distributed in the Yellow Sea and Bohai Sea of China, Japan, Korea, and Russia. In the natural sea area, the adult R. Venosa mostly inhabits the sand-mud bottom or the rocky bottom of the low intertidal zone up to 20 meters deep, and the young R. Venosa mostly inhabits the rocks near the coastal line. Its habitats are generally occupied by many other bivalves, such as Crassostrea gigas, Mactra chinensis, and Ruditapes philippinarum. The R. venosa is a large carnivorous Mollusca that mainly feeds on bivalves and other animal carcasses. R. venosa is often classified as an enemy of bivalve farming, but they can also be used to control fouling organisms, and it has potential for application in aquaculture and ocean engineering.In recent years, there have been some reports on the feeding selectivity of R. venosa, the effects of feed, temperature, and individual specifications on feeding, the effects of feed types, specifications, feeding amount, and breeding density on the survival and growth, the feeding preferences to different bivalves and the feeding cycle before and after reproduction. These studies mainly explored the effects of temperature, density, feed types, and specifications on its growth and development. The main purpose of these studies was to select suitable feed types and specifications for the temporary culture and breeding of R. venosa, to improve its growth and development speed, and increase economic benefits under artificial breeding conditions. However, the feeding selection and behavior process of R. venosa under natural conditions are not clear, and the feeding selection of R. venosa to C. gigas, Mytilus edulis and other fouling organisms was not clear under the environmental conditions of multiple bait bivalve habitats. Therefore, in this study, four kinds of bivalves (fixed type, attached type and buried type) were used as bait bivalves to understand the feeding selection. C. gigas and M. edulis are common fouling organisms in the habitat of R. venosa, while M. ...