Effect of Rhizophora apiculata plantation for improving water quality, growth, and health of mud crab.

Applied Microbiology and Biotechnology
Wenfang DaiChunlin Wang

Abstract

A deteriorated water quality is closely associated with disease outbreaks in aquaculture, where microorganisms play indispensable roles in improving water quality and aquatic animals' health. Mangrove is known to be a natural water quality filter and microbiological buffer of pathogen and prebiotics. However, it is unclear how and to what extent Rhizophora apiculata plantation is of benefits to the gut microbiota and growth over mud crab (Scylla paramamosain) aging. To address these concerns, we explored the bacterial communities in mud crab gut and rearing water at 45, 114, and 132 days after incubation, roughly corresponding to juvenile, pre-adult, and adult stages of mud crab. Results showed that 1-year R. apiculata plantation slightly increased the body weight of mud crab and improved water quality to a certain extent. Both bacterioplankton and gut bacterial communities were highly temporal dynamic, while the two communities were significantly distinct (ANOSIM r = 0.90, P = 0.0001). Relative abundances of dominant taxa in water and gut significantly varied between the plantation and the control conditions over mud crab aging. R. apiculata plantation promoted the stability of gut microbiota, as evidenced by more diverse core...Continue Reading

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Datasets Mentioned

BETA
DRA009823

Methods Mentioned

BETA
Illumina sequencing
PCR
Assay

Software Mentioned

UCLUST
vegan
R Development Core Team
QIIME
BioEnv
PERMANOVA
FastTree
LEfSe
R
Galaxy

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