| dc.description.abstract | Seriola lalandi is an economically important species that is globally distributed in
temperate and subtropical marine waters. Aquaculture production of this species has
had problems associated with intensive fish farming, such as disease outbreaks or
nutritional deficiencies causing high mortalities. Intestinal microbiota has been involved
in many processes that benefit the host, such as disease control, stimulation of the
immune response, and the promotion of nutrient metabolism, among others. However,
little is known about the potential functionality of the microbiota and the differences in
the composition between wild and aquacultured fish. Here, we assayed the V4-region
of the 16S rRNA gene using high-throughput sequencing. Our results showed that
there are significant differences between S. lalandi of wild and aquaculture origin
(ANOSIM and PERMANOVA, P < 0.05). At the genus level, a total of 13 genera were
differentially represented between the two groups, all of which have been described as
beneficial microorganisms that have an antagonistic effect against pathogenic bacteria,
improve immunological parameters and growth performance, and contribute to nutrition.
Additionally, the changes in the presumptive functions of the intestinal microbiota
of yellowtail were examined by predicting the metagenomes using PICRUSt. The
most abundant functional categories were those corresponding to the metabolism of
cofactors and vitamins, amino acid metabolism and carbohydrate metabolism, revealing
differences in the contribution of themicrobiota depending on the origin of the animals. To
our knowledge, this is the first study to characterize and compare the intestinalmicrobiota
of S. lalandi of wild and aquaculture origin using high-throughput sequencing. | |
