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Effect of Two Substrate Types on Feeding Efficiency by Juvenile Chinese Sturgeon Acipenser sinensis on Barcheek Goby <i>Rhinogobius giurinus</i>
Shanghai Natural History Museum, Shanghai Science & Technology Museum, Shanghai, China
East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
Scientific Observing and Experimental Station of Fisheries Resources and Environment of East China Sea and Yangtze Estuary, Ministry of Agriculture of China, Shanghai, China
East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
BK-Riverfish, LLC and Environmental Conservation Department, University of Massachusetts, Amherst, MA, USA
- 1 Shanghai Natural History Museum, Shanghai Science & Technology Museum, Shanghai, China
- 2 East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
- 3 Scientific Observing and Experimental Station of Fisheries Resources and Environment of East China Sea and Yangtze Estuary, Ministry of Agriculture of China, Shanghai, China
- 4 East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
- 5 East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
- 6 East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
- 7 Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- 8 BK-Riverfish, LLC and Environmental Conservation Department, University of Massachusetts, Amherst, MA, USA
Agricultural Sciences·Volume 14 (2023)·Pages 1436–1443·Published 24 October 2023·DOI10.4236/as.2023.1410094
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Abstract
We conducted experiments in an artificial stream tank with wild juvenile Chinese sturgeon Acipenser sinensis captured in the Yangtze Estuary to test the null hypothesis that their feeding efficiency on Barcheek goby Rhinogobius giurinus was not affected by sand vs. smooth glass substrate. Gobies are among the most common prey eaten by wild juvenile A. sinensis in the estuary. Test results found neither substrate type significantly affected feeding efficiency by juveniles. Previous research found a strong innate habitat preference of A. sinensis for sand substrate. The present results indicate that the preference for sand is not related to efficiently capturing R. giurinus on sand, but is an adaptation predisposing juvenile A. sinensis to seek sandy substrate where R. giurinus and other benthic forage are the most abundant in the Yangtze Estuary.
Keywords<i>Acipenser sinensis</i>Feeding EfficiencySand SubstrateBehavior
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