High-throughput sequencing reveals the core gut microbiota of the mud crab (Scylla paramamosain) in different coastal regions of southern China

Abstract

BackgroundScylla paramamosain is a commercially important mud crab. The microbiota is a community that inhabits the crab intestine, and is important for physiological functional and host health.ResultsProteobacteria, Firmicutes, Bacteroidetes, Tenericutes, Spirochaetae and Fusobacteria were the dominant phyla of the 36 representative phyla. Eleven genera of the 820 representative genera were considered as core gut microbiota and were distributed in the five dominant phyla. The core genus of the Proteobacteria included Arcobacter, Photobacterium, Vibrio, Shewanella and Desulfovibrio. The other four phyla contained one or two genera. Male and female crab samples had two different core genera, (male samples: Psychrilyobacter & Lactococcus; female samples: Clostridium_sensu_stricto_11 and Candidatus_Bacilloplasma).ConclusionsThis is the first time core intestinal microbiota have been identified in crab from nine coastal regions of southern China. This study provides sequencing data related to the gut microbiota of S. paramamosain, and may contribute to probiotic development for S. paramamosain aquaculture industries.

The invasive red-eared slider turtle is more successful than the native Chinese three-keeled pond turtle: evidence from the gut microbiota

“…The community structure and relative abundance of gut microbes vary among hosts. In aquatic animals, for example, the dominant phyla are Proteobacteria, Bacteroidetes, Tenericutes and Firmicutes in crabs ( Hong et al, 2020 ; Wei et al, 2019 ; Wei et al, 2020 ), Bacteroidetes, Firmicutes and Proteobacteria in shrimps ( Rungrassamee et al, 2014 ), fish ( Egerton et al, 2018 ), sea turtles ( Campos et al, 2018 ; McDermid et al, 2020 ) and sea lions ( Delport et al, 2016 ), and Proteobacteria and Firmicutes in sharks ( Givens et al, 2015 ). Each gut microbial phylum may have unique functional roles.…”

Influence of Seaweed Supplements on the Intestinal Bacteria in the Rabbitfish Siganus Fuscescens: Evidence for a Core Microbiome

“…The genus Arcobacter sp. is usually associated with water from sewage [80] or farm e uents such as piggeries [81] but can be common in marine invertebrates such as crabs and oysters [82] and includes some intestinal pathogens of both humans and sh [83,84]. In our study, it was particularly abundant in sh fed the 'control' diets without any supplementation ( ve times more abundant).…”

Comparative analysis of the intestinal bacterial communities in mud crab Scylla serrata in South India

“…Studies on the gut microbiome of aquatic animals and especially fish show that trophic level, season, development, sex, habitat, and life stage are among the factors affecting the composition of the gut microbiome at the interspecies level (Butt & Volkoff, 2019). However, some studies report high individual variability of the crustacean gut microbiome within groups (Ding et al, 2017; Li et al, 2007; Wei et al, 2019). This was observed in this study too and could be explained by the fact that S. serrata is an omnivorous and opportunistic scavenger.…”