Intestine and spleen microbiota composition in healthy and diseased tilapia.

Autor: Ofek T; Department of Evolutionary and Environmental Biology, Faculty of Natural Sciences, University of Haifa, 3498838, Haifa, Israel.; Central Fish Health Laboratory, Fishery and Aquaculture Department, Ministry of Agriculture and Rural Development, 1080300, Nir David, Israel., Lalzar M; Bioinformatics Service Unit, University of Haifa, 3498838, Haifa, Israel., Izhaki I; Department of Evolutionary and Environmental Biology, Faculty of Natural Sciences, University of Haifa, 3498838, Haifa, Israel., Halpern M; Department of Evolutionary and Environmental Biology, Faculty of Natural Sciences, University of Haifa, 3498838, Haifa, Israel. mhalpern@research.haifa.ac.il.; Department of Biology and Environment, Faculty of Natural Sciences, University of Haifa, 3600600, Oranim, Tivon, Israel. mhalpern@research.haifa.ac.il.
Jazyk: angličtina
Zdroj: Animal microbiome [Anim Microbiome] 2022 Aug 13; Vol. 4 (1), pp. 50. Date of Electronic Publication: 2022 Aug 13.
DOI: 10.1186/s42523-022-00201-z
Abstrakt: Symbiotic bacteria within the gut microbiome of various organisms, including fish, provide the host with several functions that improve the immune system. Although the spleen plays an important role in the modulation of immune responses, the role of spleen microbiota in shaping the immune system is unclear. Our study aimed at understanding the relationship between fish health and microbiota composition in the intestine and spleen. Our model organism was the hybrid tilapia (Oreochromis aureus × Oreochromis niloticus). We sampled intestine and spleen from healthy and diseased adult tilapia and determined their microbiota composition by sequencing the 16S rRNA gene. Significant differences were found between the intestine and the spleen microbiota composition of healthy compared to diseased fish as well as between intestines and spleens of fish with the same health condition. The microbiota diversity of healthy fish compared to diseased fish was significantly different as well. In the intestine of healthy fish, Cetobacterium was the most abundant genus while Mycoplasma was the most abundant genus in the spleen. Vibrio was the most abundant genus in the intestine and spleen of diseased fish. Moreover, it seems that there is a co-infection interaction between Vibrio and Aeromonas, which was reflected in the spleen of diseased fish. While Vibrio, Aeromonas and Streptococcus were the probable pathogens in the diseased fish, the role of Mycoplasma as a pathogen of cultured hybrid tilapia remains uncertain. We conclude that the intestine and spleen microbiota composition is strongly related to the health condition of the fish.
(© 2022. The Author(s).)
Databáze: MEDLINE
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