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Effect of diets on the feeding behavior and physiological properties of suspension-feeding sea cucumber Cucumaria frondosa

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Journal of Oceanology and Limnology 2020年第3期38卷 883-893页

作者： YU Zonghe ROBINSON Shawn MACDONALD Bruce lander terralynn SMITH Craig College of Marine Sciences South China Agricultural UniversityGuangzhou 510642China Fisheries and Oceans Canada St.Andrews Biological StationSt.AndrewsNB E5B 2L9Canada Biology Department and Centre for Coastal Studies and Aquaculture University of New BrunswickSaint JohnNB E2L 4L5Canada

The suspension-feeding sea cucumber Cucumaria frondosa has become commercially important in recent *** proper diets is the first important step for intensive aquaculture of this sea *** this study,adult *** were exposed to one of the following diet treatments:control(no diet provided),two powdered seaweeds(Ascophyllum nodosum and Saccharina latissima),a commercially available microalgal diet(shellfish diet)and natural *** effects of diets on the feeding behavior and physiological properties of sea cucumbers were investigated after a 5-week rearing *** show that sea cucumbers fed with shellfish diet exhibited a significantly higher tentacle insertion rate(1.80±0.20 insertion/min)than these fed with seaweed powders,and there was no significant different between the two groups fed by seaweed *** significant difference was found on the fecal production rate among the feeding *** minimum oxygen consumption rate was observed in the control group(5.76±0.99μg O2/(g·h)),which is significantly lower than individuals fed with ***,shellfish diet,and natural seston;however,no significant difference was shown between those of control and *** *** maximum ammonium excretion rate was found in the *** group(0.03±0.01μmol/(g·h)),which is significantly higher than other *** minimum O/N ratio was observed in the *** group(14.57±1.04),which is significantly lower than the ***,shellfish diet,and natural seston *** fed with seaweed powders had similar physiological properties with these fed with microalgae diet and natural seston,indicating that *** and *** can be explored as promising diets for intensive aquaculture of ***.

关键词： sea cucumber Cucumaria frondosa physiological property feeding behavior nutritional condition

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