Effects of stocking density on the survival and growth of Haliotis discus hannai ♀ × H. fulgens♂ hybrids

Gao, Xiaolong; Pang, Gewen; Luo, Xuan; Wang, You; Ke, Caihuan

doi:10.1016/j.aquaculture.2020.735693

Cited by 8 publications

(4 citation statements)

References 37 publications

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“…However, the DO content decreases about Frontiers in Genetics frontiersin.org 1.50 mg/L from 18 °C to 32 °C. Therefore, the high temperature in summer not only increases the demand for oxygen of abalone, but also reduces DO content in water (Gao et al, 2020). How does the abalone cope with this conflict?…”

Section: Discussionmentioning

confidence: 99%

“…The southward migration not only increased the aquaculture area, but also shortened the growth period of Pacific abalone ( Yu et al, 2021 ). Since then, the abalone farming in China has developed rapidly and the production of the abalone in Fujian province accounted for more than 80% of the total national yield ( Gao et al, 2020 ). However, the maximum seawater temperature in Fujian province exceeds 30°C, which is much higher than the optimal temperature (20°C) of Pacific abalone ( Kyeong et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…The hybrid abalone ( H. discus hannai ♀ × H. fulgens ♂) has been proved to have significant heterosis in thermal tolerance and growth rate. This hybrid abalone has been conferred on the “new variety” certification by Ministry of Agriculture, China, in 2018 ( Gao et al, 2020 ). Currently, this new variety was popularized and farmed at large-scale in southern China, which is of a great practical significance to improve the structure of cultured abalone species in China ( Chen et al, 2016 ; Chen N. et al, 2020 ; Shen et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

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Transcriptomic responses to thermal stress in hybrid abalone (Haliotis discus hannai ♀ × H. fulgens ♂)

et al. 2022

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China is the world’s largest abalone producing country. Currently, summer mortality caused by high temperature, is one of the biggest challenges for abalone aquaculture industry. The hybrid abalone (Haliotis discus hannai ♀ × H. fulgens ♂) was conferred on the “new variety”. It has heterosis for thermal tolerance and has been cultured at large-scale in southern China. In this study, a transcriptome analysis was performed to identify the related genes in this hybrid abalone under thermal stress and recovery stage. Compared to control group (18°C), a total of 75, 2173, 1050, 1349, 2548, 494, and 305 differentially expressed genes (DEGs) were identified at 21°C, 24°C, 27°C, 30°C, 32°C, 29°C, and 26°C, respectively. In this study, 24°C is the critical temperature at which the abalone is subjected to thermal stress. With the temperature rising, the number of stress-responsive genes increased. During the temperature recovering to the optimum, the number of stress-responsive genes decreased gradually. Thus, this hybrid abalone has a rapid response and strong adaptability to the temperature. Under the thermal stress, the abalone triggered a complicated regulatory network including degrading the misfolded proteins, activating immune systems, negative regulation of DNA replication, and activating energy production processes. The more quickly feedback regulation, more abundant energy supply and more powerful immune system might be the underlying mechanisms to fight against thermal stress in this hybrid abalone. These findings could provide clues for exploring the thermal-response mechanisms in abalone. The key genes and pathways would facilitate biomarker identification and thermal-tolerant abalone breeding studies.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Transcriptomic responses to thermal stress in hybrid abalone (Haliotis discus hannai ♀ × H. fulgens ♂)

et al. 2022

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“…74 Gao et al developed and tailored four sets of multi-layer, threedimensional RAS for abalones (Figure 10). 77 Each set consisted of an aquaculture system and a water treatment system. The water first flowed into the wave maker through the inlet pipe.…”

Section: Land-based Industrial Aquaculturementioning

confidence: 99%

Transitions, challenges and trends in China's abalone culture industry

Gao

Zhang

Luo

et al. 2022

Reviews in Aquaculture

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Abalone species are economically important shellfish in China's aquaculture industry. In 2020, China's abalone aquaculture production was 203,500 tonnes, accounting for nearly 90% of total global production. However, many problems have accompanied the rapid development of this industry, including a reduction in near‐shore space suitable for culture and the risk of exposure of farms to natural disasters such as typhoons and red tides. In addition, high temperatures and low oxygen levels resulting from global climate change are causing increased abalone mortality in summer. In this review, the culture patterns and characteristics used in different countries are compared with respect to larvae nurseries, intermediate juvenile culture and the grow‐out phase. Next, the transitions and challenges in China's abalone culture industry over the past 60 years are summarized. Finally, a coordinated land‐sea program for reducing solid waste emissions into the water and increasing carbon sinks is suggested based on the ‘Carbon Neutrality’ theory. Under the framework of the program, new facilities, technologies and models should be created to achieve increased mechanization and a greater understanding of the abalone aquaculture industry as soon as possible. This review provides references and data to support the scientific planning and mapping of China's abalone culture industry as well as the transition of China's perceived identity from a major fishery country to a strong fishery power with an awareness of environmental protection and resource use.

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Combined effects of temperature and salinity on larval development and metamorphosis of tetraploid Crassostrea gigas, tetraploid C. angulata and allotetraploid oysters

Jiang,

Xu,

2023

Aquacult Int

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Effects of stocking density on the survival and growth of Haliotis discus hannai ♀ × H. fulgens♂ hybrids

Cited by 8 publications

References 37 publications

Transcriptomic responses to thermal stress in hybrid abalone (Haliotis discus hannai ♀ × H. fulgens ♂)

Transcriptomic responses to thermal stress in hybrid abalone (Haliotis discus hannai ♀ × H. fulgens ♂)

Transitions, challenges and trends in China's abalone culture industry

Combined effects of temperature and salinity on larval development and metamorphosis of tetraploid Crassostrea gigas, tetraploid C. angulata and allotetraploid oysters

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