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Article

Factors Driving Bacterial Microbiota of Eggs from Commercial Hatcheries of European Seabass and Gilthead Seabream

1
Centro de Ciências do Mar (CCMAR/CIIMAR), Universidade do Algarve, 8005-139 Faro, Portugal
2
Department of Biochemistry and Biotechnology, University of Thessaly, Biopolis, 41221 Larissa, Greece
*
Author to whom correspondence should be addressed.
Academic Editor: Miguel Balado
Microorganisms 2021, 9(11), 2275; https://doi.org/10.3390/microorganisms9112275
Received: 7 October 2021 / Revised: 27 October 2021 / Accepted: 29 October 2021 / Published: 1 November 2021
(This article belongs to the Special Issue Advances in Bacterial Fish and Shellfish Diseases in Aquaculture)
A comprehensive understanding of how bacterial community abundance changes in fishes during their lifecycle and the role of the microbiota on health and production is still lacking. From this perspective, the egg bacterial communities of two commercially farmed species, the European seabass (Dicentrarchus labrax) and the gilthead seabream (Sparus aurata), from different aquaculture sites were compared, and the potential effect of broodstock water microbiota and disinfectants on the egg microbiota was evaluated. Moreover, 16S ribosomal RNA gene sequencing was used to profile the bacterial communities of the eggs and broodstock water from three commercial hatcheries. Proteobacteria were the most common and dominant phyla across the samples (49.7% on average). Vibrio sp. was the most highly represented genus (7.1%), followed by Glaciecola (4.8%), Pseudoalteromonas (4.4%), and Colwellia (4.2%), in eggs and water across the sites. Routinely used iodine-based disinfectants slightly reduced the eggs’ bacterial load but did not significantly change their composition. Site, species, and type of sample (eggs or water) drove the microbial community structure and influenced microbiome functional profiles. The egg and seawater microbiome composition differed in abundance but shared similar functional profiles. The strong impact of site and species on egg bacterial communities indicates that disease management needs to be site-specific and highlights the need for species- and site-specific optimization of disinfection protocols. View Full-Text
Keywords: microbiome; broodstock water; disinfection; hatchery; teleost eggs microbiome; broodstock water; disinfection; hatchery; teleost eggs
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MDPI and ACS Style

Najafpour, B.; Pinto, P.I.S.; Moutou, K.A.; Canario, A.V.M.; Power, D.M. Factors Driving Bacterial Microbiota of Eggs from Commercial Hatcheries of European Seabass and Gilthead Seabream. Microorganisms 2021, 9, 2275. https://doi.org/10.3390/microorganisms9112275

AMA Style

Najafpour B, Pinto PIS, Moutou KA, Canario AVM, Power DM. Factors Driving Bacterial Microbiota of Eggs from Commercial Hatcheries of European Seabass and Gilthead Seabream. Microorganisms. 2021; 9(11):2275. https://doi.org/10.3390/microorganisms9112275

Chicago/Turabian Style

Najafpour, Babak, Patricia I. S. Pinto, Katerina A. Moutou, Adelino V. M. Canario, and Deborah M. Power. 2021. "Factors Driving Bacterial Microbiota of Eggs from Commercial Hatcheries of European Seabass and Gilthead Seabream" Microorganisms 9, no. 11: 2275. https://doi.org/10.3390/microorganisms9112275

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