Distribution of bacteria involved in nitrogen and sulphur cycles in shrimp culture systems of West Bengal, India

Abraham, Thangapalam Jawahar; Ghosh, Shubhadeep; Nagesh, T. S.; Sasmal, Debasis

doi:10.1016/j.aquaculture.2004.06.023

Cited by 34 publications

(17 citation statements)

References 8 publications

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“…Aquatic organisms constantly come into contact with bacteria whose concentration can be as high as 10 6 to 10 7 cells per milliliter in their environments including in shrimp aquaculture ponds [1,7,35,51]. Several types of association between the intestinal bacteria and aquatic host animals such as ingested, transient, and resident populations are possible, and many factors such as the internal structure, intestinal lining (peritrophic membrane), diet, host conditions, and season can affect the intestinal bacteria of aquatic invertebrates [24].…”

Section: Introductionmentioning

confidence: 99%

Bacterial Community Associated with the Intestinal Tract of P. monodon in Commercial Farms

et al. 2011

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The potentially important roles of intestinal bacteria on immune response, disease resistance, and nutrition for the black tiger shrimp Penaeus monodon have been increasingly investigated. However, so far, little is known about the intestinal bacterial community of the shrimp in the commercial aquaculture settings. In this study, the intestinal bacterial communities of juvenile P. monodon (70 individuals) from eight commercial farms in Thailand were examined using 16S rDNA PCR-DGGE, and seven 16S rDNA clone libraries from representative DGGE profiles were constructed. Bacteria in the γ-Proteobacteria class were the only common bacteria group found in the intestinal tracts of shrimp from all farms. The dominant bacterial genera in the intestinal population of each shrimp varied among different farms, and these genera were Vibrio, Photobacterium, Aeromonas, or Propionigenium (phylum Fusobacteria). Other commonly found genera included Actinomyces, Anaerobaculum, Halospirulina, Pseudomonas, Mycoplasma, and Shewanella. Twelve phyla of bacteria including Proteobacteria, Firmicutes, Fusobacteria, Actinobacteria, Cyanobacteria, Tenericutes, Deinococcus-Thermus, Planctomycetes, Spirochaetes, Synergistetes, Thermotogae, and Verrucomicrobia were represented in the sequences. Additionally, strictly anaerobic bacteria such as Propionigenium and Fusibacter were found. These intestinal bacterial communities varied significantly among different commercial farms and were distinct from their rearing water. The results provide descriptive structures of the intestinal bacterial communities of P. monodon in commercial farms, which can further be applied to areas of research on the immunity, disease resistance, and nutrition of shrimp to improve aquaculture of the black tiger shrimp.

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Section: Introductionmentioning

confidence: 99%

Bacterial Community Associated with the Intestinal Tract of P. monodon in Commercial Farms

et al. 2011

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“…They are primary decomposers (41) of organic residues and fundamental for the carbon cycle. The bacteria are also the key players in nitrogen cycle involved in all its transformation from fixation, ammonification, nitrification and denitrification (1). Sherman et al (58) have shown how nutrient availability in mangrove sediment controls vegetation species patterns in the inter-tidal zone.…”

Section: Introductionmentioning

confidence: 99%

Microbial diversity in Brazilian mangrove sediments: a mini review

Ghizelini

Mendonça-Hagler

Macrae

2012

Braz. J. Microbiol.

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The importance and protection of mangrove ecosystems has been recognized in Brazilian Federal law since 1965. Being protected in law, however, has not always guaranteed their protection in practice. Mangroves are found in coastal and estuarine locations, which are prime real estate for the growth of cities, ports and other economic activities important for Brazilian development. In this mini-review we introduce what mangroves are and why they are so important. We give a brief overview of the microbial diversity found in mangrove sediments and then focus on diversity studies from Brazilian mangroves. We highlight the breadth and depth of knowledge about mangrove microbial communities gained from studying Brazilian mangroves. We report on the exciting findings of molecular microbial ecology methods that have been very successfully applied to study bacterial communities. We note that there have been fewer studies that focus on fungal communities and that fungal diversity studies deserve more attention. The review ends with a look at how a combination of new molecular biology methods and isolation studies are being developed to monitor and conserve mangrove ecosystems and their associated microbial communities. These recent studies are having a global impact and we hope they will help to protect and re-establish mangrove ecosystems.

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“…This high load of organic matter contributes in the development of anaerobic conditions in soil water interface resulting in production of reduced toxic gases such as hydrogen sulphide, nitrite and ammonia (Muralidhar, 2017). These reduced compounds are toxic to aquatic animals and are majorly documented in intensively stocked and fed shrimp farms (Patil et al, 2012(Patil et al, , 2015Abraham et al, 2004Abraham et al, , 2015. Thiobacillus spp.…”

Section: Resultsmentioning

confidence: 99%

“…The excess accumulation of unconsumed feed increases the biological oxygen demand in the aquatic system due to bacterial degradation that develops anaerobic condition. This favours the multiplication of sulphate reducing bacteria which utilizes sulphates for their metabolism and produce hydrogen sulphide (Boyd 1992;Abraham et al, 2004). Hydrogen sulphide is highly toxic at very low levels and penetrates across the cell membranes of the fish and other aquatic invertebrates resulting in acute mortalities (Colby and Smith, 1967).…”

Section: Introductionmentioning

confidence: 99%

Isolation and characterization of sulphur oxidizing bacteria (Halothiobacillus sp.) from aquaculture farm soil

Nadella¹,

Vaiyapuri²,

Kusunur³

et al. 2019

JEB

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Isolation and characterization of Halothiobacillus sp. from the shrimp aquaculture farm soil and their sulphur oxidation ability and utilization of H S in in-vitro model. 2 Starkeys mineral salt medium was used to screen autotrophic sulphur oxidizing bacteria. For the qualitative screening, bacterial isolates were inoculated in mineral salt medium containing bromo phenol blue indicator to monitor change in pH. The isolates were studied further for their sulphate ion production, sulphur oxidase enzyme production and utilization of Na S. Identification was carried out by 2 conventional biochemical and molecular methods. Fifty isolates showed distinct sulphur oxidizing ability on the mineral salt medium. The pH reduction test revealed that out of fifty isolates six could efficiently reduce the pH of the medium to 3.0 from an o-1 initial pH of 7 within 96 hr of incubation at 30 C. Maximum sulphate ion (12.65 mg ml) and sulphur oxidase-1-1 enzyme (16.64 mM sulphate hr ml) was produced by a bacterial isolate, Halothiobacillus sp. strain rk3. All the six isolates efficiently utilized Na S in in-vitro conditions. Conventional and molecular identification (16S 2 rRNA sequence analysis) revealed that the sulphur oxidizing bacterial isolates belonged to Halothiobacillus spp. Furthermore, sequencing similarity calculation showed an average nucleotide identity (ANI) values higher than 99% which suggests that the isolates were not genetically different. The present investigation revealed the presence of Halothiobacillus sp. as natural microflora of farm soils in shrimp aquaculture.

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Distribution of bacteria involved in nitrogen and sulphur cycles in shrimp culture systems of West Bengal, India

Cited by 34 publications

References 8 publications

Bacterial Community Associated with the Intestinal Tract of P. monodon in Commercial Farms

Bacterial Community Associated with the Intestinal Tract of P. monodon in Commercial Farms

Microbial diversity in Brazilian mangrove sediments: a mini review

Isolation and characterization of sulphur oxidizing bacteria (Halothiobacillus sp.) from aquaculture farm soil

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