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Animals 2018, 8(11), 189; https://doi.org/10.3390/ani8110189

Cetobacterium Is a Major Component of the Microbiome of Giant Amazonian Fish (Arapaima gigas) in Ecuador

1
Laboratorio de Biotecnología, Unidad de Alimentos, Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Avda. El Líbano 5524, Santiago, RM, Chile
2
Acuatilsa, 9 de octubre, El Puyo, Pastaza 160150, Ecuador
*
Author to whom correspondence should be addressed.
Received: 18 July 2018 / Revised: 3 September 2018 / Accepted: 15 September 2018 / Published: 24 October 2018
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Simple Summary

Arapaima gigas is a large, air-breathing, giant fish found in Amazonian rivers, a characteristic that gives this species an advantage in oxygen-deprived waters. It has a very attractive potential for aquaculture in the Amazon region due to its many advantages, including a fast growth rate that approaches 10–15 kg/year. Here, we describe the gut microbiome of Arapaima to understand the potential contribution of this bacterial community to the growth of this fish.

Abstract

Arapaima gigas is a large air-breathing fish found in Amazonian rivers, a characteristic that gives this species an advantage in oxygen-deprived waters. It shows high potential for aquaculture in the Amazon region due to its fast growth rate that approaches 10–15 kg/year. The aim of this study was to explore the composition of the intestinal bacterial community of Arapaima gigas reared in Ecuador using 16S rRNA gene high-throughput sequencing. The analysis revealed significant differences in alpha diversity indices (p < 0.05) and differential distribution of minor components of the intestinal microbiome between small and large fish. However, components with greater relative abundance, such as Cetobacterium, are found in similar proportions. View Full-Text
Keywords: microbiome; high-throughput sequencing; Arapaima gigas; Cetobacterium microbiome; high-throughput sequencing; Arapaima gigas; Cetobacterium
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MDPI and ACS Style

Ramírez, C.; Coronado, J.; Silva, A.; Romero, J. Cetobacterium Is a Major Component of the Microbiome of Giant Amazonian Fish (Arapaima gigas) in Ecuador. Animals 2018, 8, 189.

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