Closed Re-Circulating System for Water Quality Control of Pacific White Shrimp (Penaeus vannamei) Postlarvae Co-Cultured With Immobilized Spirulina Mat

Sombatjinda, Siriphorn

doi:10.4172/2155-9546.1000158

Cited by 3 publications

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“…In addition, Cong et al (2017) found out that Exiguobacterium bacteria from the Exiguobacterium arabatum strain could be used as potential probiotics, because E. arabatum was found to have a variety of transport system substrate‐binding proteins, enzymes and biosynthetic proteins that function in the uptake and metabolism of nutrients. Exiguobacterium could also be used as potential probiotic, which has been found to have the ability to produce a variety of digestive enzymes and has also been identified to improve the growth and survival of P. vannamei shrimp successfully (Cong et al, 2017; Shi et al, 2015; Sombatjinda et al, 2014). White et al (2019) found that these types of bacteria are diverse in marine, freshwater and hot spring environments and can tolerate a wide range of temperature, pH and salinity.…”

Section: Discussionmentioning

confidence: 99%

16S rRNA sequences of Exiguobacterium spp. bacteria dominant in a biofloc pond cultured with whiteleg shrimp, Penaeus vannamei

Manan

Rosland

Deris

et al. 2022

Aquaculture Research

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Biofloc technology is being applied increasingly in shrimp aquaculture. Many countries have adopted this technology to increase shrimp aquaculture production. Owing to its major importance, this study was conducted to identify the bacterial population from biofloc aquaculture shrimp pond water of Singkir Laut, Kedah, Malaysia. Samples of mature biofloc were collected from the biofloc pond water at different shrimp ages (day of culture [DOC]): DOC30, DOC60 and DOC90. Overall, 43 sequences of bacterial species were blasted, which were identified as Exiguobacterium spp., Bacillus spp., Vibrio spp., Acinetobacter junii, Cobetia marina, Rheinheimera aquimaris and Pseudoalteromonas spp. These bacterial species were identified mostly from heterotrophic plate count agar. The bacterial species of Exiguobacterium aestuarii, Exiguobacterium profundum and Exiguobacterium aurantiacum were identified with 16S rRNA gene sequence similarities of 98.45–99.44%. Bacterial species of Bacillus pumilus, Bacillus velezensis, Bacillus cereus, Bacillus safensis and Bacillus subtilis were identified with 16S rRNA gene sequence similarities of 98.81–99.21%. Bacterial species of Vibrio diazotrophicus, Vibrio diabolicus, Vibrio natriegens and Vibrio harveyi were identified with 16S rRNA gene sequence similarities of 98.03–99.19%. Bacteria from Rheinheimera aquimaris were also identified with 16S rRNA gene sequence similarities of 98.69–99.26%; this bacterium is a novel bacterium identified from biofloc samples of the present study and has not been reported from biofloc samples in any previous study. Exiguobacterium spp. from the novel strains of E. aestuarii and E. profundum were identified as dominant, with 23 of 43 samples isolated from a shrimp pond at time points DOC30, DOC60 and DOC90; these bacteria are Gram‐variable rod‐shaped organisms that are capable of producing extracellular enzyme activity to break down chemical structures, thereby helping to remove organic compounds from aquaculture waste. Exiguobacterium spp. are usually identified in tidal flat sediments and on muddy sea coasts. This discovery is consistent with the site of the shrimp pond near to a muddy beach area, which might be the source of seawater leading to the predominance of this type of bacteria in the biofloc samples in the studied pond.

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Section: Discussionmentioning

confidence: 99%

16S rRNA sequences of Exiguobacterium spp. bacteria dominant in a biofloc pond cultured with whiteleg shrimp, Penaeus vannamei

Manan

Rosland

Deris

et al. 2022

Aquaculture Research

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“…On the contrary, one‐third of the OTUs were found exclusively within the gut microbiota of animals that received the YCW, including Exiguobacterium and Vibrio . Exiguobacterium has been proposed to be a potential probiotic for P. vannamei (Cong et al, 2017) and may increase shrimp survival and growth (Sombatjinda et al, 2014). Moreover, this genus has potential biotechnological use to industry and agriculture (Kasana & Pandey, 2018).…”

Section: Discussionmentioning

confidence: 99%

Modulation of the gut microbiota of Pacific white shrimp ( Penaeus vannamei Boone, 1931) by dietary inclusion of a functional yeast cell wall‐based additive

et al. 2021

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Several eco‐friendly natural substances can enhance the shrimp immune defence system therby acting as a prophylactic agent in feed additives. Agents such as (1, 3)‐(1, 6)‐D β‐glucan and complex mannan‐oligosaccharides located in yeast cell walls present such immunomodulatory and potential prebiotic properties. The aim of our study was to evaluate the effect of a commercial yeast cell wall extract (YCW) on shrimp performance and health status, and influence on gut microbiota. Juvenile Penaeus vannamei (Boone, 1931) were raised at an intensive shrimp farm and fed with two different diet inclusions levels of YCW, that is, 0.5% and 1.0%, in addition to a yeast free control group. After 102 days, animals were sampled, and standard nutrition performance parameters were measured. Additionally, the phylogenetic profile and composition of shrimp gut microbiota were evaluated. Animal performance, including growth and survival, was significantly better on animals fed with YCW than the control group. Furthermore, beneficial bacteria phylotypes were stimulated by the presence of YCW, positively modulating the gut microbiota, with emphasis on 1.0% YCW treatment. Therefore, YCW can be regarded as a prophylactic functional agent in the intensive rearing of juvenile P. vannamei thus improving animal performance and contributing to a healthy intestinal microbiota.

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“…Exiguobacterium has been proposed for remediation of environmental pollutants, including heavy metals, organic matter, and industrial water, as well as a suggested role in plant growth (Ying et al., ). In addition, E. arabatum was reported to improve the growth and survival of P. vannamei (Sombatjinda, Wantawin, Techkarnjanaruk, Withyachumnarnkul, & Ruengjitchatchawalya, ), and five E. arabatum strains isolated from the stomach and midgut of Epinehelus moara were found to have potential probiotic benefits, with the ability to produce a variety of digestive enzymes (Shi, Wang, & Gao, ).…”

Section: Introductionmentioning

confidence: 99%

The complete genome sequence of Exiguobacterium arabatum W‐01 reveals potential probiotic functions

Cong

Jiang

et al. 2017

MicrobiologyOpen

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Shrimp is extensively cultured worldwide. Shrimp farming is suffering from a variety of diseases. Probiotics are considered to be one of the effective methods to prevent and cure shrimp diseases. Exiguobacterium arabatum W‐01, a gram‐positive and orange‐pigmented bacterium, was isolated from the intestine of a healthy Penaeus vannamei specimen. Whole‐genome sequencing revealed a genome of 2,914,854 bp, with 48.02% GC content. In total, 3,083 open reading frames (ORFs) were identified, with an average length of 843.98 bp and a mean GC content of 48.11%, accounting for 89.27% of the genome. Among these ORFs, 2,884 (93.5%) genes were classified into Clusters of Orthologous Groups (COG) families comprising 21 functional categories, and 1,650 ORFs were classified into 83 functional Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. A total of 27 rRNA operons and 68 tRNAs were identified, with all 20 amino acids represented. In addition, 91 genomic islands, 68 potential prophages, and 33 tandem repeats, but no clustered regularly interspaced short palindromic repeats (CRISPRs), were found. No resistance genes and only one virulence gene were identified. Among the 150 secreted proteins of E. arabatum W‐01, a variety of transport system substrate‐binding proteins, enzymes, and biosynthetic proteins, which play important roles in the uptake and metabolism of nutrients, were found. Two adherence‐related protein genes and 31 flagellum‐related protein genes were also identified. Taken together, these results indicate potential probiotic functions for E. arabatum W‐01.

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Closed Re-Circulating System for Water Quality Control of Pacific White Shrimp (Penaeus vannamei) Postlarvae Co-Cultured With Immobilized Spirulina Mat

Cited by 3 publications

References 0 publications

16S rRNA sequences of Exiguobacterium spp. bacteria dominant in a biofloc pond cultured with whiteleg shrimp, Penaeus vannamei

16S rRNA sequences of Exiguobacterium spp. bacteria dominant in a biofloc pond cultured with whiteleg shrimp, Penaeus vannamei

Modulation of the gut microbiota of Pacific white shrimp ( Penaeus vannamei Boone, 1931) by dietary inclusion of a functional yeast cell wall‐based additive

The complete genome sequence of Exiguobacterium arabatum W‐01 reveals potential probiotic functions

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