236 results match your criteria abundance aeromonas


Interaction Between the Intestinal Microbial Community and Transcriptome Profile in Common Carp ( L.).

Front Microbiol 2021 28;12:659602. Epub 2021 May 28.

Key Laboratory of Genetic Breeding and Aquaculture Biology of Freshwater Fishes, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, China.

In a previous study, we found that the growth performance of the new strain of Huanghe carp is related to gene expression and bacterial community in the gut. In order to better understand the relationship between the gene expression level and bacterial abundance in the gut, we studied the growth performance, gut bacterial structure, and transcriptome profile in the 4th generation of the new carp strain (selection group) at harvesting time, and compared them with the control line (traditional Huanghe carp). Body weight, depth, width, and length increased 14. Read More

View Article and Full-Text PDF

Dietary Choline-Enhanced Skin Immune Response of Juvenile Grass Carp Might Be Related to the STAT3 and NF-kB Signaling Pathway ().

Front Nutr 2021 20;8:652767. Epub 2021 May 20.

Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, China.

To investigate the effects and potential mechanisms of dietary choline on immune function in the skin of juvenile grass carp (), fish were fed different diets containing different levels of choline (142. 2, 407.4, 821. Read More

View Article and Full-Text PDF

Unraveling bacterial community structure and function and their links with natural salinity gradient in the Yellow River Delta.

Sci Total Environ 2021 Jun 8;773:145673. Epub 2021 Feb 8.

Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China.

Salinization can change the soil environment and affect microbial processes. In this study, soil samples were collected from Zone A (Phragmites australis wetlands), Zone B (P. australis and Suaeda salsa wetlands), and Zone C (Spartina alterniflora wetlands) in the Yellow River Delta. Read More

View Article and Full-Text PDF

Molecular characterization of a new IgZ3 subclass in common carp (Cyprinus carpio) and comparative expression analysis of IgH transcripts during larvae development.

BMC Vet Res 2021 Apr 14;17(1):159. Epub 2021 Apr 14.

Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Road, Shandong, 250014, Jinan, China.

Background: Immunoglobulins (Igs) distributed among systemic immune tissues and mucosal immune tissues play important roles in protecting teleosts from infections in the pathogen-rich aquatic environment. Teleost IgZ/IgT subclasses with different tissue expression patterns may have different immune functions.

Results: In the present study, a novel secreted IgZ heavy chain gene was cloned and characterized in common carp (Cyprinus carpio). Read More

View Article and Full-Text PDF

Effects of polyethylene microplastics on the microbiome and metabolism in larval zebrafish.

Environ Pollut 2021 Aug 31;282:117039. Epub 2021 Mar 31.

College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310032, China. Electronic address:

Various microplastics (MPs) are found in the environment and organisms. MP residues in organisms can affect health; however, their impacts on metabolism in aquatic organisms remain unclear. In this study, zebrafish embryos were exposed to polyethylene MPs with sizes ranging from 1 to 4 μm at concentrations of 0, 10, 100, and 1000 μg/L for 7 days. Read More

View Article and Full-Text PDF

Isolation Chip Increases Culturable Bacterial Diversity and Reduces Cultivation Bias.

Curr Microbiol 2021 May 5;78(5):2025-2032. Epub 2021 Apr 5.

College of Engineering, Peking University, Beijing, 100871, China.

Conventional cultivation methods, including petri dish plating, are selective and biased to enrich specific microorganisms, such as big population and fast-growing bacteria. In this study, we evaluated the ability of isolation chip (ichip) to reduce cultivation bias. We used the ichip and petri dish plating methods to cultivate bacteria from soil contaminated with (contaminated soil) or without (natural soil) crude oil. Read More

View Article and Full-Text PDF

Taxonomic and Functional Characteristics of the Gill and Gastrointestinal Microbiota and Its Correlation with Intestinal Metabolites in NEW GIFT Strain of Farmed Adult Nile Tilapia ().

Microorganisms 2021 Mar 17;9(3). Epub 2021 Mar 17.

State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.

The gill and gastrointestinal tract are primary entry routes for pathogens. The symbiotic microbiota are essential to the health, nutrition and disease of fish. Though the intestinal microbiota of Nile tilapia () has been extensively studied, information on the mucosa-associated microbiota of this species, especially the gill and gastrointestinal mucosa-associated microbiota, is lacking. Read More

View Article and Full-Text PDF

Metagenome Sequencing Reveals the Midgut Microbiota Makeup of and Its Possible Relationship With Insecticide Resistance.

Front Microbiol 2021 25;12:625539. Epub 2021 Feb 25.

State Key Laboratory of Pathogen and Biosecurity, Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Disease, Institute of Microbiology and Epidemiology, Beijing, China.

Midgut microbiota can participate in the detoxification and metabolism processes in insects, but there are few reports on the relationship between midgut microbiota and insecticide resistance in mosquitoes. In this study, we performed metagenomic sequencing on a susceptible strain (SS), a field-collected Hainan strain (HN), and a deltamethrin-resistant strain (RR) of to understand the diversity and functions of their midgut microbiota. The results revealed differences in midgut microbiota among the three strains of . Read More

View Article and Full-Text PDF
February 2021

Influence of pipe materials on the microbial community in unchlorinated drinking water and biofilm.

Water Res 2021 Apr 11;194:116922. Epub 2021 Feb 11.

KWR Water Research Institute, Groningenhaven 7, 3433PE Nieuwegein, the Netherlands; Laboratory of Microbiology, Wageningen University & Research, Stippeneng 4 6708WE Wageningen, the Netherlands.

Biodegradable compounds can cause undesired microbial growth in drinking water systems and these compounds can originate from the water or pipe materials used in drinking water systems. The aim of our study was to determine the influence of different pipe materials on the microbial populations in water and biofilm under semi-stagnant conditions. The microbial communities in biofilm and water, which were in contact with seven different materials, were characterized by determining ATP concentrations, microbial composition gene copy numbers of some specific microbial groups. Read More

View Article and Full-Text PDF

Copper-induced sublethal effects in Bufo gargarizans tadpoles: growth, intestinal histology and microbial alternations.

Ecotoxicology 2021 Apr 15;30(3):502-513. Epub 2021 Feb 15.

College of Life Science, Shaanxi Normal University, Xi'an, 710119, People's Republic of China.

Copper (Cu) is one of the environmental contaminations which can pose significant risks for organisms. The current study explores the effects of Cu exposure on the growth, intestinal histology and microbial ecology in Bufo gargarizans. The results revealed that 0. Read More

View Article and Full-Text PDF

Microbial intrusion and seasonal dynamics in the groundwater microbiome of a porous basaltic rock aquifer used as municipal water reservoir.

FEMS Microbiol Ecol 2021 03;97(3)

Matís ohf., Microbiology Research Group, Vínlandsleið 12, 113 Reykjavík, Iceland.

Groundwater is a key resource for safe drinking water supply. Yet unconfined aquifers can be vulnerable to microbial contamination during extreme weather events that lead to surface runoff. The current study characterises the groundwater microbiome of a porous basaltic rock aquifer in South-West Iceland used for drinking water extraction and analyses the microbial community dynamics during surface runoff. Read More

View Article and Full-Text PDF

Lumen air pressure (LAP) affecting greywater treatment in an oxygen-based membrane biofilm reactor (O-MBfR).

Chemosphere 2021 May 3;270:129541. Epub 2021 Jan 3.

University of Alberta, Department of Civil and Environmental Engineering, Edmonton, Alberta, T6G 1H9, Canada. Electronic address:

Several technologies have been employed to treat greywater (GW) for domestic use. Aerobic biological treatment has achieved high efficiency, the main cost being the necessary source of oxygen (O). This study explores the effects of lumen air pressure (LAP) on reactor performance and microbial community succession in an O-based membrane biofilm reactor (O-MBfR) treating GW. Read More

View Article and Full-Text PDF

Intestinal microbial communities of rainbow trout (Oncorhynchus mykiss) may be improved by feeding a Hermetia illucens meal/low-fishmeal diet.

Fish Physiol Biochem 2021 Apr 3;47(2):365-380. Epub 2021 Jan 3.

Department of Biotechnology and Life Sciences, University of Insubria, Via J.H. Dunant, 3, 21100, Varese, Italy.

With demands and reliance on aquaculture still growing, there are various challenges to allow sustainable growth and the shift from fishmeal (FM) to other protein sources in aquafeed formulations is one of the most important. In this regard, interest in the use of insect meal (IM) in aquafeeds has grown rapidly. Accordingly, the aim of the present study was to assess the effects of dietary IM from Hermetia illucens (Hi) larvae included in a low-FM diet on gut microbial communities of rainbow trout (Oncorhynchus mykiss), in terms of both composition and function of microbiome. Read More

View Article and Full-Text PDF

[Effects of Selected Biochars Application on the Microbial Community Structures and Diversities in the Rhizosphere of Water Spinach ( Forssk.) Irrigated with Reclaimed Water].

Huan Jing Ke Xue 2020 Dec;41(12):5636-5647

Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China.

The utilization of reclaimed water is one of the most important ways of alleviating the shortage of water resources for agricultural irrigation. As an effective disposal method for biomass waste, biochar has been widely used in the improvement and remediation of agricultural environments. However, few studies have been performed on the effects of biochar application on microbial community structures and pathogen abundances in rhizosphere soils irrigated with reclaimed water. Read More

View Article and Full-Text PDF
December 2020

Effescts of acute diclofenac exposure on intestinal histology, antioxidant defense, and microbiota in freshwater crayfish (Procambarus clarkii).

Chemosphere 2021 Jan 29;263:128130. Epub 2020 Aug 29.

State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.

In the present study, we exposed Procambarus clarkii to different doses (0, 1, and 10 mg/L) of diclofenac (DCF). Meanwhile, we investigated the effects of exposure to DCF on intestinal histology, antioxidant defense, and microbial communities in P. clarkii. Read More

View Article and Full-Text PDF
January 2021

Influence of Environmental Stressors on the Microbiota of Zebra Mussels (Dreissena polymorpha).

Microb Ecol 2021 May 26;81(4):1042-1053. Epub 2020 Nov 26.

BioTechnology Institute, University of Minnesota, 1479 Gortner Ave., 140 Gortner Labs, St. Paul, MN, 55108, USA.

Host-associated microbiota play a critical role in host fitness by providing nutrition, enhancing digestion capabilities, and by providing protection from pathogens. Here, we investigated the effects of two environmental stressors, temperature, and salinity, on the microbiota associated with zebra mussels (ZMs), a highly invasive bivalve in North America. To examine this in detail, lake-collected ZMs were acclimated to laboratory conditions, and subjected to temperature and salinity stress conditions. Read More

View Article and Full-Text PDF

Extended-spectrum beta-lactamase-producing Escherichia coli and antimicrobial resistance in municipal and hospital wastewaters in Czech Republic: Culture-based and metagenomic approaches.

Environ Res 2021 02 21;193:110487. Epub 2020 Nov 21.

CEITEC VFU, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1946/1, 612 42 Brno, Czech Republic; Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1946/1, 612 42, Brno, Czech Republic; Biomedical Center, Faculty of Medicine, Charles University, alej Svobody 1655/76, 323 00, Plzen, Czech Republic. Electronic address:

Wastewaters serve as important hot spots for antimicrobial resistance and monitoring can be used to analyse the abundance and diversity of antimicrobial resistance genes at the level of large bacterial and human populations. In this study, whole genome sequencing of beta-lactamase-producing Escherichia coli and metagenomic analysis of whole-community DNA were used to characterize the occurrence of antimicrobial resistance in hospital, municipal and river waters in the city of Brno (Czech Republic). Cefotaxime-resistant E. Read More

View Article and Full-Text PDF
February 2021

Influence of anthropogenic activities on the spatial distribution of heterotrophic, indicator and pathogenic bacteria around Andaman and Nicobar Islands.

Mar Pollut Bull 2021 Jan 18;162:111839. Epub 2020 Nov 18.

CSIR-National Institute of Oceanography, Regional Centre, 176, Lawsons Bay Colony, Visakhapatnam 530017, India.

To examine the influence of anthropogenic activities on the marine ecosystem around the Andaman and Nicobar Islands, a study was conducted to investigate the abundance of heterotrophic, indicator and pathogenic bacteria during the monsoon season. We noticed the higher abundance of heterotrophic, indicator (Escherichia coli and Enterococcus faecalis) and pathogenic bacterial counts (Aeromonas hydrophila, Enterobacter aerogens, Escherichia coli strain O157:H7, Shigella dysenteriae and Vibrio parahaemolyticus) near the 10 channel, which is the principal route to reach Andaman mainland. Most of the stations are offshore (chosen to cover shipping tracks) at a distance ranging from 41 to 266 km from the coast. Read More

View Article and Full-Text PDF
January 2021

Amplicon sequencing reveals significantly increased Vibrio abundance and associated gene functions in vibriosis-infected black tiger shrimp (Penaeus monodon).

J Fish Dis 2021 May 18;44(5):591-599. Epub 2020 Nov 18.

Marshall Centre for Infectious Disease Research and Training, School of Biomedical Sciences, University of Western Australia, Perth, WA, Australia.

Vibriosis caused by luminous Vibrio species is one of the biggest challenges to shrimp industry in Bangladesh. This study aimed to characterize whole microbial communities from Vibrio-infected black tiger shrimp (Penaeus monodon) using 16S rRNA-based amplicon sequencing. A total of 36 disease-free and infected shrimp were collected from six different hatcheries in Bagerhat, Bangladesh. Read More

View Article and Full-Text PDF

Alterations in the Gut Microbiota of Zebrafish () in Response to Water-Soluble Crude Oil Components and Its Mixture With a Chemical Dispersant.

Front Public Health 2020 26;8:584953. Epub 2020 Oct 26.

Departamento de Recursos del Mar, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional-Unidad Mérida, Mérida, Mexico.

Crude oil spills have caused substantial impacts to aquatic ecosystems. Chemical dispersants are used to palliate the impact of oil spillages, but their use is polemic due to their additional potential toxic effect when mixed with oil-derived components. In this work, we used a 16S-based metagenomic approach to analyze the changes of the gut microbiota of adult zebrafish () exposed to the water accommodated fraction (WAF) of a light crude oil (35° API gravity), and the chemically enhanced WAF (CEWAF), prepared with Nokomis 3-F4® dispersant. Read More

View Article and Full-Text PDF

The prevalence of ampicillin-resistant opportunistic pathogenic bacteria undergoing selective stress of heavy metal pollutants in the Xiangjiang River, China.

Environ Pollut 2021 Jan 13;268(Pt B):115362. Epub 2020 Aug 13.

College of Environmental Sciences and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin, 300350, China. Electronic address:

The emergence of clinically relevant β-lactam-resistant bacteria poses a serious threat to human health and presents a major challenge for medical treatment. How opportunistic pathogenic bacteria acquire antibiotic resistance and the prevalence of antibiotic-resistant opportunistic pathogenic bacteria in the environment are still unclear. In this study, we further confirmed that the selective pressure of heavy metals contributes to the increase in ampicillin-resistant opportunistic pathogens in the Xiangjiang River. Read More

View Article and Full-Text PDF
January 2021

The LysR-Type Transcriptional Regulator YeeY Plays Important Roles in the Regulatory of Furazolidone Resistance in .

Front Microbiol 2020 9;11:577376. Epub 2020 Sep 9.

Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China.

is an aquatic pathogen of freshwater fish. The emergence of widespread antimicrobial-resistance strains of this pathogen has caused increasing rates of fish infections. Our previous research reported that , a LysR-type transcriptional regulator (LTTR), negatively regulated furazolidone (FZ) resistance. Read More

View Article and Full-Text PDF
September 2020

Potential influence of jaggery-based biofloc technology at different C:N ratios on water quality, growth performance, innate immunity, immune-related genes expression profiles, and disease resistance against Aeromonas hydrophila in Nile tilapia (Oreochromis niloticus).

Fish Shellfish Immunol 2020 Dec 20;107(Pt A):118-128. Epub 2020 Sep 20.

Fish Infectious Diseases Research Unit (FID RU), Department of Veterinary Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand. Electronic address:

Biofloc technology is increasingly becoming the most promising aquaculture tool especially in places where water is scarce and the land is very expensive. The dynamics of water quality, as well as plankton and microbial abundance, are collectively necessary for successful fish farming. The prospective use of jaggery as a potential carbon source and its influence on water quality, growth performance, innate immunity, serum bactericidal capacity, and disease resistance to Aeromonas hydrophila was investigated in Oreochromis niloticus. Read More

View Article and Full-Text PDF
December 2020

Cascading effects caused by fenoxycarb in freshwater systems dominated by Daphnia carinata and Dolerocypris sinensis.

Ecotoxicol Environ Saf 2020 Oct 24;203:111022. Epub 2020 Jul 24.

Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China.

To evaluate the aquatic hazards of the insect juvenile hormone analogue fenoxycarb, a single application (0, 48.8, 156.3, 500, 1600, and 5120 μg/L) of it was done in indoor freshwater systems dominated by Daphnia carinata (daphnid) and Dolerocypris sinensis (ostracoda). Read More

View Article and Full-Text PDF
October 2020

Phages as a Cohesive Prophylactic and Therapeutic Approach in Aquaculture Systems.

Antibiotics (Basel) 2020 Sep 1;9(9). Epub 2020 Sep 1.

Bacteriophage Laboratory, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland.

Facing antibiotic resistance has provoked a continuously growing focus on phage therapy. Although the greatest emphasis has always been placed on phage treatment in humans, behind phage application lies a complex approach that can be usefully adopted by the food industry, from hatcheries and croplands to ready-to-eat products. Such diverse businesses require an efficient method for combating highly pathogenic bacteria since antibiotic resistance concerns every aspect of human life. Read More

View Article and Full-Text PDF
September 2020

Natural Concurrent Infections with Black Spot Disease and Multiple Bacteriosis in Farmed Nile Tilapia in Central Kenya.

Vet Med Int 2020 30;2020:8821324. Epub 2020 Jul 30.

Sokoine University of Agriculture, College of Veterinary and Medical Sciences, P.O. Box 3000, Chuo Kikuu, Morogoro, Tanzania.

Nile tilapia () is the most cultured and available fish for Kenyan consumers, and therefore, any tilapine disease deprives them the valuable source of protein. Nile tilapia farm was diagnosed with severe concurrent black spot disease and multiple bacteriosis using gross lesions and parasitological, histopathology, and standard bacteriological procedures. A total of 25 fish were sampled and inspected, and all of them had raised, macroscopic 1 mm-sized black spot lesions. Read More

View Article and Full-Text PDF

Prevalence of antibiotic resistance and virulence genes in the biofilms from an aquifer recharged with stormwater.

Water Res 2020 Oct 6;185:116269. Epub 2020 Aug 6.

CSIRO Land and Water, Ecoscience Precinct, 41 Boggo Road, Brisbane 4102, Australia.

An improved understanding of the diversity and composition of microbial communities carrying antibiotic resistance genes (ARGs) and virulence genes (VGs) in aquifers recharged with stormwater is essential to comprehend potential human health risks from water reuse. A high-throughput functional gene array was used to study the prevalence of ARGs and VGs in aquifer biofilms (n = 27) taken from three boreholes over three months. Bacterial genera annotated as opportunistic pathogens such as Aeromonas, Burkholderia, Pseudomonas, Shewanella, and Vibrio were ubiquitous and abundant in all biofilms. Read More

View Article and Full-Text PDF
October 2020

Effects of co-contamination of heavy metals and total petroleum hydrocarbons on soil bacterial community and function network reconstitution.

Ecotoxicol Environ Saf 2020 Nov 10;204:111083. Epub 2020 Aug 10.

Hunan Research Institute for Nonferrous Metals, Changsha, China. Electronic address:

Due to the accumulation of heavy metals in soil ecosystems, the response of soil microorganisms to the disturbance of heavy metals were widely studied. However, little was known about the interactions among microorganisms in heavy metals and total petroleum hydrocarbons (TPH) co-contaminated soils. In the present study, the microbiota shifts of 2 different contamination types of heavy metal-TPH polluted soils were investigated. Read More

View Article and Full-Text PDF
November 2020

Low-dose methylmercury exposure impairs the locomotor activity of zebrafish: Role of intestinal inositol metabolism.

Environ Res 2020 11 7;190:110020. Epub 2020 Aug 7.

Center for Global Health, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu, 211166, PR China; Key Lab of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu, 211166, PR China. Electronic address:

Methylmercury (MeHg) is a ubiquitous environmental toxicant with neurotoxic effects. Although its neurotoxicity had been more studied, the role of gut microbiota remains unclear. In this study, adult zebrafish and larvae were exposed to MeHgCl at the dose of 0, 1 and 10 ng/mL. Read More

View Article and Full-Text PDF
November 2020

Identification of Antimicrobial Resistance Determinants in Strain MS-17-88 Recovered From Channel Catfish ().

Front Cell Infect Microbiol 2020 17;10:348. Epub 2020 Jul 17.

College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, United States.

is a Gram-negative species ubiquitous in different aquatic environments and capable of causing a variety of diseases to a broad host range. species have the capability to carry and acquire antimicrobial resistance (AMR) elements, and currently multi-drug resistant (MDR) isolates are commonly found across the world. strain MS-17-88 is a MDR strain isolated from catfish in the southeastern United States. Read More

View Article and Full-Text PDF