Effects of artificial shelter on feeding, digestion, and growth of the sea cucumber Apostichopus japonicus

IF 3.2 2区农林科学 Q1 FISHERIES

Aquaculture Reports Pub Date : 2024-09-25 DOI:10.1016/j.aqrep.2024.102379

Xiang Li, Xiajing Wang, Zihe Zhao, Yingzhuo Sun, Jun Ding, Yaqing Chang, Chong Zhao

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引用次数: 0

Abstract

Shelters are widely used in sea cucumber aquaculture. But the long-term effects of shelters on behavior and physiology are unknown in sea cucumber aquaculture. In this research, the number of grasping of the sea cucumber mouth tentacle significantly increased in the experimental group (group Y) compared with the control group (group C) (P = 0.003), indicating that the shelter increases the feeding rate of sea cucumbers. The height of the intestinal crease in group Y was significantly higher than that in group C (P < 0.001), and the proportion of Patescibacteria in the intestine significantly increased. However, there was no significant difference in digestive enzyme activities, and the defecation rate of Apostichopus japonicus in group Y was significantly lower than that in group C (P = 0.047). This suggests that the shelter probably improves the digestive capacity of sea cucumbers by altering their gut microbial composition and gut structure. In addition, final body weight (P = 0.006) and daily gain (P = 0.008) in group Y were significantly higher than those in group C. This indicates that the shelter improves the growth efficiency of sea cucumbers. The present study reveals that long-term use of shelter greatly improves feeding behavior, defecation behavior, gut microbiota composition, gut structure, and growth of A. japonicus. In summary, the shelter improves the behavior and physiological activities of sea cucumbers, and consequently increases the aquaculture efficiency.

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人工掩蔽物对日本海参摄食、消化和生长的影响

遮蔽物在海参养殖中被广泛使用。但在海参养殖中，遮蔽物对行为和生理的长期影响尚不清楚。在本研究中，实验组（Y 组）与对照组（C 组）相比，海参口触角的抓取次数明显增加（P = 0.003），表明遮蔽物提高了海参的摄食率。Y 组的肠道皱襞高度明显高于 C 组（P < 0.001），肠道中的贝特氏菌比例明显增加。但消化酶活性无明显差异，Y 组日本豚的排便率明显低于 C 组（P = 0.047）。这表明，庇护所可能通过改变海参的肠道微生物组成和肠道结构来提高其消化能力。此外，Y 组的最终体重（P = 0.006）和日增重（P = 0.008）显著高于 C 组。本研究表明，长期使用遮蔽物可大大改善日本海参的摄食行为、排便行为、肠道微生物群组成、肠道结构和生长。总之，遮蔽物改善了海参的行为和生理活动，从而提高了养殖效率。

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来源期刊

Aquaculture Reports Agricultural and Biological Sciences-Animal Science and Zoology

CiteScore

5.90

自引率

8.10%

发文量

469

审稿时长

77 days

期刊介绍： Aquaculture Reports will publish original research papers and reviews documenting outstanding science with a regional context and focus, answering the need for high quality information on novel species, systems and regions in emerging areas of aquaculture research and development, such as integrated multi-trophic aquaculture, urban aquaculture, ornamental, unfed aquaculture, offshore aquaculture and others. Papers having industry research as priority and encompassing product development research or current industry practice are encouraged.