Salinity Effects on Aquatic and Host Intestinal Microbiota Dynamics in Rhinogobio ventralis
Rattachement africain : cn. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The endangered Rhinogobio ventralis, endemic to the upper Yangtze River, is dependent on captive breeding for its conservation. However, this highly stress-sensitive species is exceptionally susceptible to Ichthyophthirius multifiliis, leading to severe pathology and high mortality in culture. Elevated salinity holds potential for managing key aquaculture pathogens, including Ichthyophthirius multifiliis and Saprolegnia spp. However, its potential unintended ecological consequences remain insufficiently understood. This study evaluated the systemic impacts of 5‰ salinity on the culture environment of the endangered species Rhinogobio ventralis, using integrated 16S/18S rRNA gene sequencing and water quality analysis. The results demonstrated that while salinity treatment effectively reduced the environmental molecular signal of harmful eukaryotes such as Ichthyophthirius and Saprolegnia, it also induced significant ecological shifts: (1) aquatic prokaryotic diversity increased, yet the self-purification capacity of the water was compromised, indicated by elevated dissolved oxygen, nitrate nitrogen, and total nitrogen; (2) in the fish intestinal microbiome, a decline in potentially beneficial taxa (e.g., Exiguobacterium) co-occurred with an enrichment of genera containing potentially pathogenic species (e.g., Staphylococcus and Pseudomonas), collectively suggesting a state of dysbiosis; (3) co-occurrence network analysis revealed that the aquatic microbial community developed greater complexity, while the intestinal network became structurally simplified and more antagonistic. These findings reveal that elevating salinity in freshwater aquaculture systems compromises both host microbiome health and aquatic ecosystem functioning. As such, future aquaculture management should integrate supportive measures like probiotic supplementation to maintain overall system stability.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Salinity Effects on Aquatic and Host Intestinal Microbiota Dynamics in Rhinogobio ventralis
- Date Crossref
- 26/11/2025
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Southwest University pays non établi dans la noticeUniversité ou école supérieure
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Ministry of Agriculture and Rural Affairs pays non établi dans la noticeOrganisme public
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Yangtze River Fisheries Research Institute pays non établi dans la noticeStructure de recherche
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Chinese Academy of Fishery Sciences pays non établi dans la noticeOrganisation à but non lucratif
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Chongqing University of Arts and Sciences pays non établi dans la noticeUniversité ou école supérieure
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College of Fisheries MOE Key Laboratory of Freshwater Fish Reproduction and Development pays non établi dans la noticeUniversité ou école supérieure
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Key Laboratory of Freshwater Biodiversity Conservation pays non établi dans la noticeStructure de recherche
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College of Smart Agriculture pays non établi dans la noticeUniversité ou école supérieure
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Postdoctoral Research Workstation of Chongqing Fengdu Agricultural Science and Technology Development Group Co. pays non établi dans la noticeOrganisation à but non lucratif
Southwest University, Ministry of Agriculture and Rural Affairs et Yangtze River Fisheries Research Institute, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.