Immune and intestinal microbiota responses to heat stress in Chinese mitten crab (Eriocheir sinensis)

Li, Zhiqiang; Zhao, Zhigang; Luo, Liang; Wang, Shihui; Zhang, Rui; Guo, Kun; Yang, Yuhong

doi:10.1016/j.aquaculture.2022.738965

Cited by 21 publications

(5 citation statements)

References 59 publications

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“…Thus, 35 • C can be used as the thermal stress temperature. According to Li et al [13], immune-related enzymes peaked at 12 h or 24 h and then decreased following thermal stress. When the temperature was elevated from 18 • C to 30 • C, E. sinensis grew faster, the molting period shortened, and the survival rate decreased from 100% to 97.2% [14].…”

Section: Introductionmentioning

confidence: 99%

Cardiac Transcriptome and Histology of the Heart of the Male Chinese Mitten Crab (Eriocheir sinensis) under High-Temperature Stress

Pan,

Li,

Yang

et al. 2024

Fishes

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High temperatures are important environmental stressors affecting the metabolism, growth, immunity, and mortality of Chinese mitten crabs (Eriocheir sinensis). In this study, Chinese mitten crabs were divided into two groups and exposed to temperatures of 35 °C (thermal stress group) or 25 °C (control group) for 24 h, and the transcriptome of the heart was analyzed. There were 4007 differentially expressed genes (DEGs) between the thermal stress and the control groups, including 2660 upregulated and 1347 downregulated genes. Heat shock proteins (HSPs) and transcription factors (TFs) were temperature-sensitive DEGs in Chinese mitten crabs. DEGs mainly focused on protein processing in the endoplasmic reticulum, ribosome biogenesis, glycine, serine, and threonine metabolism, protein export, and insect hormone biosynthesis pathways. A total of 28,916 SSRs and 59 TF families, including 851 TFs, were detected among all unigenes of E. sinensis transcripts. The qRT-PCR results for the HSPs and apoptotic DEGs from the heart exhibited the same trends as those in the E. sinensis transcriptome data. Results of light microscopy analyzing histological sections of the heart indicated that most myocardial fibers were lysed, and the number of nuclei and the connective tissue contents between the myocardial layers were both reduced following 35 °C exposure for 24 h.

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Section: Introductionmentioning

confidence: 99%

Cardiac Transcriptome and Histology of the Heart of the Male Chinese Mitten Crab (Eriocheir sinensis) under High-Temperature Stress

Pan,

Li,

Yang

et al. 2024

Fishes

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“…This morphological transformation is a critical period in the life cycle of Eriocheir sinensis , marking a significant transition in habitat and lifestyle [ 9 ]. Understanding the changes in gut microbiota during this period could provide insights into how these organisms adapt to new environments and the role of microbiota in their development and survival [ 10 , 11 ]. However, despite the significant habitat and developmental morphological changes during this particular stage, it has received little attention.…”

Section: Introductionmentioning

confidence: 99%

Early Succession of Community Structures and Biotic Interactions of Gut Microbes in Eriocheir sinensis Megalopa after Desalination

Xue,

Wu,

et al. 2024

Microorganisms

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As an enduring Chinese freshwater aquaculture product, the Eriocheir sinensis has a high economic value and is characterized by a catadromous life style that undergoes seawater–freshwater migration. However, little is known about their gut microbial status as they move from saltwater to freshwater acclimatization. Here, we sampled and cultivated Eriocheir sinensis megalopa from three aquaculture desalination ponds and investigated their gut microbiota diversity, community structures and biotic interactions from megalopa stage to the first juvenile stage after desalination for 9 days. Our results revealed that during the transition from megalopa to the first juvenile in Eriocheir sinensis, a significant change in gut microbial composition was observed (for instance, changes in relative abundance of dominant phyla), which was, however, not influenced by different sampling sites. The species diversity (such as the richness) of the gut microbiota showed a hump-shaped pattern along the succession. However, the compositional differences of the gut microbes showed constantly increasing patterns during the succession after freshwater adaption for all three sampling sites. Further co-occurrence analysis also showed that the complexity of the ecological networks in gut microbes was significantly enhanced during the development, such as increasing numbers of network links, connectivity and modularity, and was confirmed by decreasing average path length and proportions of negative links. Taken together, the differences in community structures and biological interactions of gut microorganisms were more pronounced in Eriocheir sinensis megalopa during desalination than in diversity and species compositions. This implies that the gut microbes of Eriocheir sinensis megalopa would become more robust and adaptive during the developmental process.

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“…In aquaculture, E. sinensis is exposed to a variety of environmental stressors, such as hypoxia [4], elevated temperature [5], heavy metal ions [6], pesticides [7], and high levels of ammonia nitrogen [8]. These stressors trigger two types of stress responses: oxidative stress and nitrosative stress [9].…”

Section: Introductionmentioning

confidence: 99%

H2O2-Induced Oxidative Stress Responses in Eriocheir sinensis: Antioxidant Defense and Immune Gene Expression Dynamics

He,

Feng,

Chen

et al. 2024

Antioxidants

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Eriocheir sinensis, a key species in China’s freshwater aquaculture, is threatened by various diseases, which were verified to be closely associated with oxidative stress. This study aimed to investigate the response of E. sinensis to hydrogen peroxide (H2O2)-induced oxidative stress to understand the biological processes behind these diseases. Crabs were exposed to different concentrations of H2O2 and their antioxidant enzyme activities and gene expressions for defense and immunity were measured. Results showed that activities of antioxidant enzymes—specificallysuperoxide dismutase (SOD), catalase (CAT), total antioxidant capacity(T-AOC), glutathione (GSH), and glutathione peroxidase (GSH-Px)—varied with exposure concentration and duration, initially increasing then decreasing. Notably, SOD, GSH-Px, and T-AOC activities dropped below control levels at 96 h. Concurrently, oxidative damage markers, including malondialdehyde (MDA), H2O2, and 8-hydroxy-2′-deoxyguanosine (8-OHdG) levels, increased with exposure duration. The mRNA expression of SOD, CAT, and GSH-Px also showed an initial increase followed by a decrease, peaking at 72 h. The upregulation of phenoloxidaseloxidase (proPO) and peroxinectin (PX) was also detected, but proPO was suppressed under high levels of H2O2. Heat shock protein 70 (HSP70) expression gradually increased with higher H2O2 concentrations, whereas induced nitrogen monoxide synthase (iNOS) was upregulated but decreased at 96 h. These findings emphasize H2O2’s significant impact on the crab’s oxidative and immune responses, highlighting the importance of understanding cellular stress responses for disease prevention and therapy development.

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Immune and intestinal microbiota responses to heat stress in Chinese mitten crab (Eriocheir sinensis)

Cited by 21 publications

References 59 publications

Cardiac Transcriptome and Histology of the Heart of the Male Chinese Mitten Crab (Eriocheir sinensis) under High-Temperature Stress

Cardiac Transcriptome and Histology of the Heart of the Male Chinese Mitten Crab (Eriocheir sinensis) under High-Temperature Stress

Early Succession of Community Structures and Biotic Interactions of Gut Microbes in Eriocheir sinensis Megalopa after Desalination

H2O2-Induced Oxidative Stress Responses in Eriocheir sinensis: Antioxidant Defense and Immune Gene Expression Dynamics

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