Research and Analysis of Pressure-Maintaining Trapping Instrument for Macro-Organisms in Hadal Trenches

Wang, Hao; Chen, Jiawang; Wang, Yuhong; Fang, Jiasong; Fang, Yuping

doi:10.3390/jmse8080596

Cited by 9 publications

(2 citation statements)

References 21 publications

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“…Considerable advances in technology for the exploration of deep-sea life have been made since the turn of the 21st century, including full-ocean-depth-rated modular landers developed for in situ measurements and renewed high-pressure culture techniques, resulting in the development of hadal microbial communities as a research hotspot. There are several extensive reviews on hadal environment macro-organisms (Bruun 1950;Wang et al 2020;Xu et al 2018) but here we focus on microbial adaptation to the hadal zone environment and the technological developments supporting the exploration of microbial life in this unique biosphere.…”

Section: Introductionmentioning

confidence: 99%

Scientific and technological progress in the microbial exploration of the hadal zone

Fan

Wang

Ding

et al. 2021

Mar Life Sci Technol

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The hadal zone is the deepest point in the ocean with a depth that exceeds 6000 m. Exploration of the biological communities in hadal zone began in the 1950s (the first wave of hadal exploration) and substantial advances have been made since the turn of the twenty-first century (the second wave of hadal exploration), resulting in a focus on the hadal sphere as a research hotspot because of its unique physical and chemical conditions. A variety of prokaryotes are found in the hadal zone. The mechanisms used by these prokaryotes to manage the high hydrostatic pressures and acquire energy from the environment are of substantial interest. Moreover, the symbioses between microbes and hadal animals have barely been studied. In addition, equipment has been developed that can now mimic hadal environments in the laboratory and allow cultivation of microbes under simulated in situ pressure. This review provides a brief summary of recent progress in the mechanisms by which microbes adapt to high hydrostatic pressures, manage limited energy resources and coexist with animals in the hadal zone, as well as technical developments in the exploration of hadal microbial life.

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Section: Introductionmentioning

confidence: 99%

Scientific and technological progress in the microbial exploration of the hadal zone

Fan

Wang

Ding

et al. 2021

Mar Life Sci Technol

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“…Some scholars have researched deep-sea pressure and heat preservation sampling, but there has been no report on the dynamic response analysis of deep-sea organisms during the sampling process. However, the dynamic responses of the tissues and organs of deep-sea organisms during the sampling process are the key factors affecting biological activity (Billings et al, 2017;Garel et al, 2019;Peoples et al, 2019;Wang et al, 2020). Because the hadal snailfish lives in the extreme environment of the deep sea, its dynamic response during the capture process cannot be analyzed in a laboratory.…”

Section: Introductionmentioning

confidence: 99%

A novel active deep-sea low-damage pressure-retaining organisms sampler

Liu

Jin²,

Peng³

et al. 2022

Front. Mar. Sci.

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Capturing less damaged organisms samples is the basis for research on the biological communities, living environments, biological life compositions, and biological tissue structures of organisms livinin the deep seabed. The hadal snailfish is pressure-tolerant, cold-tolerant, and easily damaged. This research used a hydraulic suction macro-biological pressure-retaining sampler (HSMPS) to capture less damaged hadal snailfish samples via pumping. As the hadal snailfish is sucked into the macro-organism pressure-maintaining sampler, it inevitably collides with the suction pipe in the diversion area (SPDA) and the inner wall of the pressure-maintaining cylinder in the pressure-maintaining area (PCPA). Therefore, a finite element analysis model of a hadal snailfish with a real geometric shape was constructed by obtaining the material mechanical properties of different parts of the fish on the seabed through static compression tests, and the dynamic modeling and response analysis of the hadal snailfish during the capture process was carried out. Moreover, the dynamic response changes of the stress, strain and acceleration of various tissues and organs of the hadal snailfish during the capture process were determined, thereby providing technical support for the research and development of marine biological sampling equipment.

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