5-HT regulates adhesion capacity of the sea cucumber Apostichopus japonicus

IF 2.4 3区农林科学 Q2 FISHERIES

Aquaculture International Pub Date : 2025-08-27 DOI:10.1007/s10499-025-02203-5

Xiang Li, Yunjie Yang, Guo Wu, Ruihuan Tian, Yingzhuo Sun, Sihan Wang, Zihe Zhao, Donghong Yin, Chong Zhao

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Abstract

Adhesion involves complex regulatory mechanisms in marine organisms, yet the underlying processes remain poorly understood. This study investigated the role of the polian vesicle fluid and neurotransmitters in modulating temporary adhesion in the sea cucumber Apostichopus japonicus. In the present study, behavioral assays and biochemical analyses showed that polian vesicle fluid more significantly enhanced the adhesion of sea cucumber than coelomic fluid. Meanwhile, the present study further revealed the regulatory effect of polian vesicle fluid on the adhesion capacity of sea cucumber. Key ions (K⁺, Na⁺, Ca²⁺) showed no consistent correlation with adhesion capacity, whereas 5-hydroxytryptamine (5-HT) elevated in polian vesicle fluid of sea cucumbers with the strong adhesion. Experiments revealed that 5-HT increased adhesion efficiency, while its inhibitor attenuated this effect. In contrast, acetylcholine (ACh) and its inhibitors had no significant effect in this experiment. Heated polian vesicle fluid retained its adhesion properties. These findings establish the polian vesicle as a key organ, and highlight 5-HT as a critical regulator in the temporary adhesion of A. japonicus. The present study enriches our understanding on adhesion mechanisms in marine organisms, and offers new insights into sea cucumber aquaculture.

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5-羟色胺调节刺参的粘附能力

在海洋生物中，粘附涉及复杂的调节机制，但潜在的过程仍然知之甚少。本研究探讨了政治囊泡液和神经递质在调节日本参（Apostichopus japonicus）暂时性粘附中的作用。本研究通过行为学分析和生化分析表明，政治囊泡液对海参黏附的促进作用比体腔液更显著。同时，本研究进一步揭示了polian囊泡液对海参粘附能力的调节作用。关键离子（K+、Na+、Ca2+）与粘附能力的相关性不一致，而5-羟色胺（5-HT）在海参囊液中升高，粘附能力强。实验表明，5-HT增加了粘附效率，而其抑制剂则减弱了这种作用。相比之下，乙酰胆碱（ACh）及其抑制剂在本实验中无显著影响。加热后的polipolis囊泡流体保持了其粘附特性。这些发现证实了政治囊泡是一个关键器官，并强调了5-羟色胺在日本刺参暂时粘附中的关键调节作用。本研究丰富了我们对海洋生物黏附机理的认识，为海参养殖提供了新的思路。

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来源期刊

Aquaculture International 农林科学-渔业

CiteScore

5.10

自引率

6.90%

发文量

204

审稿时长

1.0 months

期刊介绍： Aquaculture International is an international journal publishing original research papers, short communications, technical notes and review papers on all aspects of aquaculture. The Journal covers topics such as the biology, physiology, pathology and genetics of cultured fish, crustaceans, molluscs and plants, especially new species; water quality of supply systems, fluctuations in water quality within farms and the environmental impacts of aquacultural operations; nutrition, feeding and stocking practices, especially as they affect the health and growth rates of cultured species; sustainable production techniques; bioengineering studies on the design and management of offshore and land-based systems; the improvement of quality and marketing of farmed products; sociological and societal impacts of aquaculture, and more. This is the official Journal of the European Aquaculture Society.