Advances, challenges, and directions in shrimp disease control: the guidelines from an ecological perspective

Xiong, Jinbo; Dai, Wenfang; Li, Chenghua

doi:10.1007/s00253-016-7679-1

Cited by 109 publications

(65 citation statements)

References 82 publications

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“…This clear separation of gut microbiota over shrimp life stages is similar to other aquatic species, such as zebrafish in laboratory-raised condition (Burns et al, 2016) and cohabitating fishes in field lake (Yan et al, 2016). This discrepancy could be attributed to host phylogeny, a known predominant factor in governing gut microbiota (Sullam et al, 2012;Xiong et al, 2016). This discrepancy could be attributed to host phylogeny, a known predominant factor in governing gut microbiota (Sullam et al, 2012;Xiong et al, 2016).…”

Section: Shrimp Ontogeny Governs Its Gut Bacterial Colonizationmentioning

confidence: 55%

Spatiotemporal successions of shrimp gut microbial colonization: high consistency despite distinct species pool

Xiong

Xuan

et al. 2019

Environmental Microbiology

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Summary Aquatic animals encounter suites of novel planktonic microbes during their development. Although hosts have been shown to exert strong selection on their gut microbiota from surrounding environment, to what extent and the generality that the gut microbiota and the underlying ecological processes are affected by biotic and abiotic variations are largely unclear. Here, these concerns were explored by coupling spatiotemporal data on gut and rearing water bacterial communities with environmental variables over shrimp life stages at spatially distant locations. Shrimp gut microbiotas significantly changed mirroring their development, as evidenced by gut bacterial signatures of shrimp life stage contributing 95.5% stratification accuracy. Shrimp sourced little (2.6%–15.8%) of their gut microbiota from their rearing water. This microbial resistance was reflected by weak compositional differences between shrimp farming spatially distinct locations where species pools were distinct. Consistently, the assembly of shrimp gut microbiota was not adequately explained by the rearing water variables and bacterial community, but rather by host‐age‐associated biotic features. The successions of shrimp gut microbiota were droved by replacement (βsim), rather than by nestedness (βnes), while those of bacterioplankton communities were equally governed by replacement and nestedness. Our study highlights how shrimp gut bacterial community assembly is coupled to their development, rearing species pool, and that the successional pattern of host‐associated communities is differed from that of free‐living bacteria.

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Section: Shrimp Ontogeny Governs Its Gut Bacterial Colonizationmentioning

confidence: 55%

Spatiotemporal successions of shrimp gut microbial colonization: high consistency despite distinct species pool

Xiong

Xuan

et al. 2019

Environmental Microbiology

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“…These OTUs are more widespread than expected, indicating that they have competitive advantages in surviving the biotic counterpressure imposed by resident microbes and host filters (Burns et al., ). In this regard, it is reasonable that the over‐represented OTUs are candidates for probiotics, due to a higher chance of successful establishment in the shrimp gut (Mallon et al., ; Xiong et al., ). In contrast, portions of the OTUs that were neutrally distributed exhibited an opposite trend, ranging from 37.5% to 60.4% (Table ; Figure ).…”

Section: Discussionmentioning

confidence: 99%

Response of host–bacterial colonization in shrimp to developmental stage, environment and disease

et al. 2018

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The host-associated microbiota is increasingly recognized to facilitate host fitness, but the understanding of the underlying ecological processes that govern the host-bacterial colonization over development and, particularly, under disease remains scarce. Here, we tracked the gut microbiota of shrimp over developmental stages and in response to disease. The stage-specific gut microbiotas contributed parallel changes to the predicted functions, while shrimp disease decoupled this intimate association. After ruling out the age-discriminatory taxa, we identified key features indicative of shrimp health status. Structural equation modelling revealed that variations in rearing water led to significant changes in bacterioplankton communities, which subsequently affected the shrimp gut microbiota. However, shrimp gut microbiotas are not directly mirrored by the changes in rearing bacterioplankton communities. A neutral model analysis showed that the stochastic processes that govern gut microbiota tended to become more important as healthy shrimp aged, with 37.5% stochasticity in larvae linearly increasing to 60.4% in adults. However, this defined trend was skewed when disease occurred. This departure was attributed to the uncontrolled growth of two candidate pathogens (over-represented taxa). The co-occurrence patterns provided novel clues on how the gut commensals interact with candidate pathogens in sustaining shrimp health. Collectively, these findings offer updated insight into the ecological processes that govern the host-bacterial colonization in shrimp and provide a pathological understanding of polymicrobial infections.

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“…There is evidence, albeit limited, showing that healthy and diseased shrimp have distinct gut bacterial communities (Cheung et al., ; Xiong, Dai, & Li, ; Xiong et al., ; Zheng et al., ). The Pacific white shrimp is a very important culture species, but little information is available on the effect of feed nutrients on the intestinal microbiota.…”

Section: Effects Of Soybean Products On Gut Microbiotamentioning

confidence: 99%

Dietary effects of soybean products on gut microbiota and immunity of aquatic animals: A review

et al. 2017

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Soybean meal (SBM) is one of the most commonly used vegetable ingredient to replace fish meal in fish diets. However, SBM is limiting in some essential amino acids and contains numerous antinutritional factors and antigens that can affect intestinal microbiota and innate immune system in several finfish species and crustaceans and compromise health. The impact of SBM on health and gut microbiota of aquatic animals is not only affected by SBM in general, but also on the degree of treatment of the meal and exposure. Recently, many studies are actively seeking ways to complement or balance those adverse responses induced by high inclusion of SBM in aquaculture diets. These include advanced processing and mixture of feed with other feed components to balance antinutritional factors. The impact of dietary soybean oil on gut microbiota has also been investigated but to a lesser extent than SBM. As the gastrointestinal tract has been suggested as one of the major routes of infection in finfish species and crustaceans, the effect of soybean products on the gut microbiota is important to investigate. Several studies have focus on supplementation of SBM on the adverse responses of the innate immune system as immunological mechanisms are likely involved in the underlying pathology. However, the precise cause of the inflammatory process has not yet been clarified, even though some investigations have suggested that alcohol‐soluble antinutritional factors, especially soy saponins, are potential causative factors. Possible interactions between soybean products and innate immune system in several finfish species and crustaceans are discussed.

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Advances, challenges, and directions in shrimp disease control: the guidelines from an ecological perspective

Cited by 109 publications

References 82 publications

Spatiotemporal successions of shrimp gut microbial colonization: high consistency despite distinct species pool

Spatiotemporal successions of shrimp gut microbial colonization: high consistency despite distinct species pool

Response of host–bacterial colonization in shrimp to developmental stage, environment and disease

Dietary effects of soybean products on gut microbiota and immunity of aquatic animals: A review

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