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Mahmood S, Rasool F, Hafeez-ur-Rehman M, Anjum KM. Molecular characterization of Aeromonas hydrophila detected in Channa marulius and Sperata sarwari sampled from rivers of Punjab in Pakistan. PLoS One 2024; 19:e0297979. [PMID: 38551906 PMCID: PMC10980204 DOI: 10.1371/journal.pone.0297979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/15/2024] [Indexed: 04/01/2024] Open
Abstract
Aeromonas hydrophila is one of the major pathogenic bacteria responsible for causing severe outbreaks at fish farms and is also a major global public health concern. This bacterium harbors many virulence genes. The current study was designed to evaluate the antidrug and virulence potential of A. hydrophila by amplifying its antimicrobial resistance and virulence genes using PCR and examining their effects on fish tissues and organs. A total of 960 fish samples of Channa marulius and Sperata sarwari were collected from four sites of the rivers of the Punjab, Pakistan. A. hydrophila isolates were subjected to biochemical identification and detection of virulence and antimicrobial resistance (AMR) genes by PCR. We retrieved 181 (6.46%) A. hydrophila isolates from C. marulius and 177 (6.25%) isolates from S. sarwari. Amplification through PCR revealed the incidence of virulence genes in 95.7% of isolates in C. marulius and 94.4% in S. sarwari. Similarly, amplification through PCR also revealed occurrence of AMR genes in 87.1% of isolates in C. marulius and 83.9% in S. sarwari. Histopathological examination revealed congestion (5.2%) and hepatocyte necrosis (4.6%) in liver, lamellar fusion (3.3%) and the presence of bacterial colonies (3.7%) in gills, fin erosion (6%), and the presence of biofilms (3.5%) in tail fins of infected fish. Phylogenetic tree analysis of 16S rRNA and gyrB gene of A. hydrophila revealed 100% and 97% similarity, respectively, with 16S rRNA gene and gyrB of A. hydrophila isolated in previous studies. The results of antimicrobial susceptibility testing showed that all isolates demonstrated resistance to sulfamethoxazole, ampicillin, neomycin, and norfloxacin, while susceptibility to gentamicin, chloramphenicol, and tetracycline, and intermediate resistance was observed against cefotaxime. The results concluded that examined fish samples were markedly contaminated with virulent and multidrug strains of A. hydrophila which may be of a potential health risk. The study emphasizes the responsible antimicrobial use in aquaculture and the urgent need for effective strategies to control the spread of virulence and antimicrobial resistance genes in A. hydrophila.
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Affiliation(s)
- Shahid Mahmood
- Department of Fisheries and Aquaculture, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Fayyaz Rasool
- Department of Zoology, Faisalabad Campus, University of Education, Lahore, Pakistan
| | - Muhammad Hafeez-ur-Rehman
- Department of Fisheries and Aquaculture, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Khalid Mahmood Anjum
- Department of Wildlife and Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan
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Tankrathok A, Mahong B, Roytrakul S, Daduang S, Temsiripong Y, Klaynongsruang S, Jangpromma N. Proteomic analysis of crocodile white blood cells reveals insights into the mechanism of the innate immune system. Heliyon 2024; 10:e24583. [PMID: 38312682 PMCID: PMC10835162 DOI: 10.1016/j.heliyon.2024.e24583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 01/10/2024] [Accepted: 01/10/2024] [Indexed: 02/06/2024] Open
Abstract
Crocodiles have a particularly powerful innate immune system because their blood contains high levels of antimicrobial peptides. They can survive injuries that would be fatal to other animals, and they are rarely afflicted with diseases. To better understand the crocodile's innate immune response, proteomic analysis was performed on the white blood cells (WBC) of an Aeromonas hydrophila-infected crocodile. Levels of WBC and red blood cells (RBC) rapidly increased within 1 h. In WBC, there were 109 up-regulated differentially expressed proteins (DEP) that were up-regulated. Fifty-nine DEPs dramatically increased expression from 1 h after inoculation, whereas 50 up-regulated DEPs rose after 24 h. The most abundant DEPs mainly had two biological functions, 1) gene expression regulators, for example, zinc finger proteins and histone H1 family, and 2) cell mechanical forces such as actin cytoskeleton proteins and microtubule-binding proteins. This finding illustrates the characteristic effective innate immune response mechanism of crocodiles that might occur via boosted transcription machinery proteins to accelerate cytoskeletal protein production for induction of phagocytosis, along with the increment of trafficking proteins to transport essential molecules for combating pathogens. The findings of this study provide new insights into the mechanisms of the crocodile's innate immune system.
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Affiliation(s)
- Anupong Tankrathok
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
- Department of Biotechnology, Faculty of Agricultural Technology, Kalasin University, Kalasin, 46000, Thailand
| | - Bancha Mahong
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Sittiruk Roytrakul
- Proteomics Laboratory, Genome Technology Research Unit, National Center for Genetic Engineering and Biotechnology, Pathumthani, 12120, Thailand
| | - Sakda Daduang
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
- Division of Pharmacognosy and Toxicology, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, 40002, Thailand
| | | | - Sompong Klaynongsruang
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
- Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Nisachon Jangpromma
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
- Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
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Adah DA, Saidu L, Oniye SJ, Adah AS, Daoudu OB, Ola-Fadunsin SD. Molecular characterization and antibiotics resistance of Aeromonas species isolated from farmed African catfish Clarias gariepinus Burchell, 1822. BMC Vet Res 2024; 20:16. [PMID: 38184574 PMCID: PMC10771007 DOI: 10.1186/s12917-023-03860-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 12/19/2023] [Indexed: 01/08/2024] Open
Abstract
BACKGROUND Aeromonas species are one of the most important etiologies of diseases in fish farms, leading to clinical manifestation and mortality and are associated with public health risks. This study aimed to investigate the prevalence, phenotypic and molecular characteristics of Aeromonas species isolated from farmed Clarias gariepinus using 16 S rRNA sequencing. Additionally, their antibiogram and multiple antibiotic resistance index were determined using a disc diffusion test. RESULTS A total of 230 Aeromonas strains were isolated from Clarias gariepinus with 40.9% obtained from diseased fish, and 25% isolated from apparently healthy ones. Five different species including Aeromonas caviae, Aeromonas veronii, Aeromonas hydrophila, Aeromonas dhakensis and Aeromonas enteropelogenes were fully identified and genetically characterized. Based on the available literature, this is the first report of Aeromonas enteropelogenes from the study area. The phylogenetic analysis showed genetic heterogeneity and distance within the species and the reference strains. The multiple resistant Aeromonas species were susceptible to ciprofloxacin, gentamycin, and florfenicol. The Aeromonas species' multiple antibiotic resistance index values varied between 0.20 and 0.80 and were isolated from the farms where antibiotics were intensively used. CONCLUSIONS The diversity of multidrug-resistant Aeromonas species isolated from fish farms is a major threat to fish production giving us more understanding of epidemiology and the multidrug Aeromonas species with a MAR index of greater than 0.2 were isolated from farms where antibiotic use was widespread. As a result, a considerably increased danger of multiple antibiotic resistance spreading to the fish culture environment may impact aquaculture production. Hence there is a need for appropriate and monitored drug usage.
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Affiliation(s)
- Deborah Arimie Adah
- Department of Veterinary Medicine, Faculty of Veterinary Medicine, University of Ilorin, Ilorin, Nigeria.
| | - Lawal Saidu
- Veterinary Teaching Hospital, Ahmadu Bello University, Zaria, Nigeria
| | - Sonnie Joshua Oniye
- Department of Biological Science, National Open University of Nigeria, Abuja, Nigeria
| | - Adakole Sylvanus Adah
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ilorin, Ilorin, Nigeria
| | - Oluwafemi Babatunde Daoudu
- Department of Veterinary Microbiology, Faculty of Veterinary Medicine, University of Ilorin, Ilorin, Nigeria
| | - Shola David Ola-Fadunsin
- Department of Veterinary Parasitology and Entomology, Faculty of Veterinary Medicine, University of Ilorin, Ilorin, Nigeria
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Yunis-Aguinaga J, Sotil G, Morey GAM, Fernandez-Espinel C, Flores-Dominick V, Rengifo-Marin G, da Silva Claudiano G, Medina-Morillo M. Susceptibility of the cultured Amazonian fish, Colossoma macropomum, to experimental infection with Aeromonas species from ornamental fish. Microb Pathog 2024; 186:106461. [PMID: 38048837 DOI: 10.1016/j.micpath.2023.106461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 09/21/2023] [Accepted: 11/22/2023] [Indexed: 12/06/2023]
Abstract
The global ornamental fish trade carries important risk factors for spreading pathogens between different countries and regions, not only for ornamental fish but also for cultured fish and even other animal species. In the current study, we reported the capacity of Aeromonas veronii and A. hydrophila isolated from ornamental fish to experimentally infect the reared Amazonian fish Colossoma macropomum. For this, those bacteria were identified, and a primary characterization was performed. Fish were inoculated with 0.1 mL of increasing concentrations of A. hydrophila or A. veronii (C1 = 1 × 102; C2 = 1.8 × 104; C3 = 2.1 × 106; C4 = 2.4 × 108 bacterial cells per mL) in the coelomic cavity. In the control group, fish received the same volume of sterile saline solution (0.9 %). Fish presented petechiae, skin suffusions, and mortality rates up to 100 % according to the inoculum concentration. Histopathologically, fish presented necrosis with karyolysis, loss of the cytoplasmic delimitation of cells of the renal tubules and hepatocytes, hemorrhage, cellular edema, and the presence of bacterial cells. The LD50-96h of A. veronii on C. macropomum was estimated at 2.4 × 106 CFU mL-1 and of A. hydrophila at 1.408 × 105 CFU mL-1. The results demonstrated that it is possible that Aeromonas species isolated from ornamental fish affect C. macropomum, causing similar clinical signs and lesions. This shows the importance of promoting risk control measures worldwide regarding the trade of ornamental fish.
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Affiliation(s)
- Jefferson Yunis-Aguinaga
- Laboratorio de Patobiología Acuática, Instituto del Mar del Perú (IMARPE), Callao, Peru; Universidad Científica del Sur, Lima, Peru.
| | - Giovanna Sotil
- Laboratorio de Genética Molecular, Instituto del Mar del Perú (IMARPE), Callao, Peru; Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - German Augusto Murrieta Morey
- Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Peru; Universidade Estadual do Maranhão- UEMA, Programa de Pós-graduação em Ciência Animal - PPGCA, São Luís, Maranhão- Brasil
| | | | | | - Gino Rengifo-Marin
- Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Peru
| | | | - Marco Medina-Morillo
- Laboratorio de Patobiología Acuática, Instituto del Mar del Perú (IMARPE), Callao, Peru.
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Das R, Sarma K, Hazarika G, Choudhury H, Sarma D. Identification and characterisation of emerging fish pathogens Aeromonas veronii and Aeromonas hydrophila isolated from naturally infected Channa punctata. Antonie Van Leeuwenhoek 2023; 117:4. [PMID: 38153571 DOI: 10.1007/s10482-023-01896-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 11/17/2023] [Indexed: 12/29/2023]
Abstract
Naturally infected Channa punctata exhibiting bacterial septicemic syndrome including ulcerations along with mortality records were collected from a fish farm in Assam during winter season (early November 2020 to early January 2021). The moribund fishes were subjected for bacterial isolation followed by identification of the bacteria. Two dominant emerging bacterial pathogens were identified as Aeromonas veronii (isolate ZooGURD-01) and Aeromonas hydrophila (isolate ZooGURD-05) by standard biochemical characterization and 16S rRNA and rpo B gene amplification. Re-infection experiments of both the bacterial isolates in healthy disease-free C. punctata showed similar symptoms to that of natural infection thus confirming their virulence. The LD50 calculated during challenge test for both the isolates ZooGURD-01 and ZooGURD-05 found to be pathogenic at 2.6 × 104 and 1.6 × 104 CFU/fish respectively. Further PCR amplification of specific virulent genes (aerolysin, hemolysin and enterotoxin) confirmed pathogenicity for both isolates. Histopathological examinations of liver and kidney in re-infection experiments showed prominent changes supporting bacterial septicaemia. Antibiotic sensitivity pattern showed that the isolates ZooGURD-01 and ZooGURD-05 were sensitive to 22 and 19 out of 25 antimicrobials respectively. The present study was the first report on the mortality of farmed C. punctata associated with natural infection caused by A. veronii and A. hydrophila with no record of pathogenicity of A. veronii in C. punctata.
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Affiliation(s)
- Rajdeep Das
- Department of Zoology, Gauhati University, Guwahati, Assam, 781014, India
| | - Kangkan Sarma
- Department of Zoology, Gauhati University, Guwahati, Assam, 781014, India
| | - Gayatree Hazarika
- Department of Zoology, Gauhati University, Guwahati, Assam, 781014, India
| | | | - Dandadhar Sarma
- Department of Zoology, Gauhati University, Guwahati, Assam, 781014, India.
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Palaniyappan S, Sridhar A, Kari ZA, Téllez-Isaías G, Ramasamy T. Potentials of Aloe barbadensis inclusion in fish feeds on resilience to Aeromonas hydrophila infection in freshwater fish Labeo rohita. FISH PHYSIOLOGY AND BIOCHEMISTRY 2023; 49:1435-1459. [PMID: 37996691 DOI: 10.1007/s10695-023-01266-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 11/06/2023] [Indexed: 11/25/2023]
Abstract
Aquatic bacterial pathogens can cause severe economic loss in aquaculture industry. An opportunistic pathogen, Aeromonas hydrophila is responsible for Motile Aeromonas Septicemia, leading to high mortality rates in fish. The present study was focused on the efficacy of Aloe barbadensis replacing fishmeal diets on hematological, serum biochemical, antioxidant, histopathological parameters, and disease resistance against A. hydrophila infection in Labeo rohita. Isonitrogenous fishmeal replaced diets (FMR) were prepared with varying levels of A. barbadensis at D1 (0%) (control), D2 (25%), D3 (50%), D4 (75%) and D5 (100%) then fed to L. rohita. After 60 days of post-feeding, the experimental fish were challenged with A. hydrophila. Blood and organs were collected and examined at 1- and 15-days post infection (dpi). The results demonstrated that on 1 dpi, white blood cells (WBC), total protein, cholesterol and low-density lipoprotein (LDL) levels were significantly increased in D3 diet fed groups. The D2 and D3 diet fed group showed decreasing trends of serum glutamic pyruvic transaminase (SGPT) and antioxidant enzymes activity on 15 dpi. The histopathological architecture results clearly illustrated that the D3 diet fed group had given a higher protective effect by reducing the pathological changes associated with A. hydrophila infection in liver, intestine and muscle. Higher percentage of survival rate was also observed in D3 diet fed group. Therefore, the present study suggested that the dietary administration of A. barbadensis up to 50% fishmeal replacement (D3 diet) can elicit earlier antioxidant activity, innate immune response and improve survival rate in L. rohita against A. hydrophila infection.
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Affiliation(s)
- Sivagaami Palaniyappan
- Laboratory of Aquabiotics/Nanoscience, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620 024, Tamil Nadu, India
| | - Arun Sridhar
- Immunology-Vaccinology, Department of Infectious and Parasitic Diseases, Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, University of Liège, 4000, Liège, Belgium
| | - Zulhisyam Abdul Kari
- Department of Agricultural Sciences, Advanced Livestock and Aquaculture Research Group, Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, Jeli Campus, 17600, Jeli, Malaysia
| | | | - Thirumurugan Ramasamy
- Laboratory of Aquabiotics/Nanoscience, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620 024, Tamil Nadu, India.
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Abdella B, Abozahra NA, Shokrak NM, Mohamed RA, El-Helow ER. Whole spectrum of Aeromonas hydrophila virulence determinants and the identification of novel SNPs using comparative pathogenomics. Sci Rep 2023; 13:7712. [PMID: 37173388 PMCID: PMC10182093 DOI: 10.1038/s41598-023-34887-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/09/2023] [Indexed: 05/15/2023] Open
Abstract
Aeromonas hydrophila is a ubiquitous fish pathogen and an opportunistic human pathogen. It is mostly found in aquatic habitats, but it has also been isolated from food and bottled mineral waters. It causes hemorrhagic septicemia, ulcerative disease, and motile Aeromonas septicemia (MAS) in fish and other aquatic animals. Moreover, it might cause gastroenteritis, wound infections, and septicemia in humans. Different variables influence A. hydrophila virulence, including the virulence genes expressed, host susceptibility, and environmental stresses. The identification of virulence factors for a bacterial pathogen will help in the development of preventive and control measures. 95 Aeromonas spp. genomes were examined in the current study, and 53 strains were determined to be valid A. hydrophila. These genomes were examined for pan- and core-genomes using a comparative genomics technique. A. hydrophila has an open pan-genome with 18,306 total genes and 1620 genes in its core-genome. In the pan-genome, 312 virulence genes have been detected. The effector delivery system category had the largest number of virulence genes (87), followed by immunological modulation and motility genes (69 and 46, respectively). This provides new insight into the pathogenicity of A. hydrophila. In the pan-genome, a few distinctive single-nucleotide polymorphisms (SNPs) have been identified in four genes, namely: D-glycero-beta-D-manno-heptose-1,7-bisphosphate 7-phosphatase, chemoreceptor glutamine deamidase, Spermidine N (1)-acetyltransferase, and maleylpyruvate isomerase, which are present in all A. hydrophila genomes, which make them molecular marker candidates for precise identification of A. hydrophila. Therefore, for precise diagnostic and discrimination results, we suggest these genes be considered when designing primers and probes for sequencing, multiplex-PCR, or real-time PCR.
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Affiliation(s)
- Bahaa Abdella
- Aquaculture Department, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt.
| | - Nourhan A Abozahra
- Aquaculture Department, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Nermeen M Shokrak
- Aquaculture Department, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Radi A Mohamed
- Aquaculture Department, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Ehab R El-Helow
- Department of Botany and Microbiology, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt
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Dissasa G, Lemma B, Mamo H. Isolation and identification of major bacteria from three Ethiopian rift valley lakes live and processed fish, and water samples: implications in sanitary system of fish products. BMC Vet Res 2022; 18:439. [PMID: 36517783 PMCID: PMC9749233 DOI: 10.1186/s12917-022-03508-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 11/07/2022] [Indexed: 12/15/2022] Open
Abstract
Bacterial pathogens are a great threat to fish production. Gram-negative bacteria are among the major bacterial fish pathogens and are zoonotic with the potential to infect humans. This cross-sectional study was conducted to isolate and identify major gram-negative bacteria from live and processed fish, and water samples from Lakes Hawassa, Langanoo and Ziway. A total of 674 different types of samples: 630 tissue samples (210 samples for each intestine, Kkidney and liver collected from 210 live fish (Oreochromis niloticus, Cyprinus carpio and Clarias gariepinus), 20 processed fish samples from lake Ziway fish processing center and 24 lake water samples were included in the study from each lake. The mean values of pH, temperature, dissolved oxygen and nitrate in all water samples were within the normal range at which most freshwater fish species become non-stressed. Of a total of 674 samples included in the study, bacteria were isolated from 154(22.8%) samples with significant difference (P < 0.05) observed in some isolates with respect to sample origin. Of these 154 isolates, 103(66.8%) isolates were gram-negative bacteria consisting of 15 species based on morphology and a range of biochemical tests. From live fish samples, Escherichia coli was the dominant species with 15 isolates followed by Edwardsiella tarda (12), Salmonella Paratyphi (10), Salmonella Typhi (9), Shigella dysenteriae (7), Shigella flexneri (7), Klebsiella pneumonia (7), Enterobacter aerogenes (6), Enterobacter cloacae (5), Pseudomonas aeruginosa (5), Vibrio parahemolyticus (5), Aeromonas sobria (4), Citrobacter freundii (4), Citrobacter koseri (4) and Plesiomonas shigelloides (3). The detection of the common fecal coliforms (E. coli, K. pneumoniae and E. aerogenes) and Salmonella spp. in processed fish indicates the potential danger of passage of pathogenic bacteria and/or their poisons to humans via infected and/or contaminated fish products. Human infection by pathogenic fish bacteria and food poisoning is possible through contamination of fish product in fish production chain due to inadequate handling, poor hygiene and contact with contaminated water. Therefore, producers, consumers and all other stakeholders need to be cautious during handling, processing and consumption of fish harvested from the study lakes.
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Affiliation(s)
- Guta Dissasa
- grid.7123.70000 0001 1250 5688Institute of Biotechnology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Brook Lemma
- grid.7123.70000 0001 1250 5688Department of Zoological Sciences, College of Natural and Computational Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Hassen Mamo
- grid.7123.70000 0001 1250 5688Department of Microbial, Cellular and Molecular Biology, College of Natural and Computational Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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Bacterial Communities and Antibiotic Resistance of Potential Pathogens Involved in Food Safety and Public Health in Fish and Water of Lake Karla, Thessaly, Greece. Pathogens 2022; 11:pathogens11121473. [PMID: 36558807 PMCID: PMC9785323 DOI: 10.3390/pathogens11121473] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 11/30/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
Bacterial communities, microbial populations, and antibiotic resistance of potential pathogens in the water and fish (Cyprinus carpio, flesh and gut) from different areas (A1, A2 and A3-A1 was linked with river water, A2 with cattle activity, and A3 with waters of a spring after heavy rains) of Lake Karla (Thessaly, Central Greece) were investigated. The isolated bacteria were identified using Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) and were tested for resistance in 21 antibiotics. The microbiota composition of fish flesh was also studied using 16S amplicon-based sequencing Serratia fonticola and several species of Aeromonas (e.g., Aeromonas salmonicida, Aeromonas bestiarium, Aeromonas veronii, etc.) exhibited the highest abundances in all studied samples, while the microbiota profile between the three studied areas was similar, according to the culture-dependent analysis. Of them, S. fonticola was found to be resistant in the majority of the antibiotics for the water and fish (gut and flesh), mainly of the areas A1 and A2. Regarding 16S metabarcoding, the presence of Serratia and Aeromonas at genus level was confirmed, but they found at very lower abundances than those reported using the culture-dependent analysis. Finally, the TVC and the rest of the studied microbiological parameters were found at acceptable levels (4 log cfu/mL or cfu/g and 2-4 log cfu/mL or cfu/g, extremely low levels of E. coli/coliforms) in both water and fish flesh. Based on our findings, the water of Lake Karla would be used for activities such as irrigation, recreation and fishing, however, the development and implementation of a quality management tool for Lake Karla, to ensure environmental hygiene and prevention of zoonosis during the whole year, is imperative.
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Chen CZ, Li P, Liu L, Li ZH. Exploring the interactions between the gut microbiome and the shifting surrounding aquatic environment in fisheries and aquaculture: A review. ENVIRONMENTAL RESEARCH 2022; 214:114202. [PMID: 36030922 DOI: 10.1016/j.envres.2022.114202] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/10/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
The rise of "new" sequencing technologies and the development of sophisticated bioinformatics tools have dramatically increased the study of the aquaculture microbiome. Microbial communities exist in complex and dynamic communities that play a vital role in the stability of healthy ecosystems. The gut microbiome contributes to multiple aspects of the host's physiological health status, ranging from nutritional regulation to immune modulation. Although studies of the gut microbiome in aquaculture are growing rapidly, the interrelationships between the aquaculture microbiome and its aquatic environment have not been discussed and summarized. In particular, few reviews have focused on the potential mechanisms driving the alteration of the gut microbiome by surrounding aquatic environmental factors. Here, we review current knowledge on the host gut microbiome and its interrelationship with the microbiome of the surrounding environment, mainly including the main methods for characterizing the gut microbiome, the composition and function of microbial communities, the dynamics of microbial interactions, and the relationship between the gut microbiome and the surrounding water/sediment microbiome. Our review highlights two potential mechanisms for how surrounding aquatic environmental factors drive the gut microbiome. This may deepen the understanding of the interactions between the microbiome and environmental factors. Lastly, we also briefly describe the research gaps in current knowledge and prospects for the future orientation of research. This review provides a framework for studying the complex relationship between the host gut microbiome and environmental stresses to better facilitate the widespread application of microbiome technologies in fisheries and aquaculture.
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Affiliation(s)
- Cheng-Zhuang Chen
- Marine College, Shandong University, Weihai, Shandong, 264209, China
| | - Ping Li
- Marine College, Shandong University, Weihai, Shandong, 264209, China
| | - Ling Liu
- Marine College, Shandong University, Weihai, Shandong, 264209, China
| | - Zhi-Hua Li
- Marine College, Shandong University, Weihai, Shandong, 264209, China.
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Wang B, Hu J, Feng J, Zhang Y, Sun Y, Jiang B, Li W, Liu C, Huang Y, Su Y. Acute septicemia and immune response of spotted sea bass (Lateolabrax maculatus) to Aeromonas veronii infection. FISH & SHELLFISH IMMUNOLOGY 2022; 124:47-55. [PMID: 35367379 DOI: 10.1016/j.fsi.2022.03.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 03/13/2022] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
A previous study confirmed that spotted sea bass (Lateolabrax maculatus), an economically important cultured species in East Asia, is a new host of Aeromonas veronii, which can cause acute death in these fish, but there is little in-depth understanding of this disease. In the present study, the virulence of 10 isolates of A. veronii derived from spotted sea bass was determined. It was found that the 18BJ181 isolate was a virulent strain and led to the fastest death of spotted sea bass. Death was determined to be within in 2-12 h, and resulted in abdominal effusion and varying degrees of hemorrhage in internal organs. Bacterial colonization analysis showed that the bacterial load in the spleen was highest, and was up to 3.1 × 105 cfu g-1. In addition, the bacteria proliferated massively in the blood and reached 2.4 × 107 cfu mL-1 at 12 h after 18BJ181 strain infection, which was also a typical feature of acute septicemia. Histopathology of the spleen revealed edema in interstitial tissue, degeneration, and necrosis in lymphoid tissue, and hemorrhage in the capillary network. Transcriptome analysis of the spleen showed that the expression level of HSP70, CCL19, and IL-1β was extremely significantly up-regulated at 8 h after infection (P < 0.01), and the expression of these genes was normal at 24 h. These results revealed that A. veronii infection could rapidly activate the chemokine signal pathway and stimulate the acute inflammatory response in the host. The bacterial colonization, pathological features, and gene expression patterns in immune pathways will help us to better understand acute septicemia in spotted sea bass caused by A. veronii.
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Affiliation(s)
- Baotun Wang
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China; Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
| | - Jianmei Hu
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China; Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
| | - Juan Feng
- Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China
| | - Yaqiu Zhang
- Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China
| | - Yanxin Sun
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Biao Jiang
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Wei Li
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Chun Liu
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Yanhua Huang
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China.
| | - Youlu Su
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China.
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12
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Gu Y, Chen K, Xi B, Xie J, Bing X. Paeonol increases the antioxidant and anti-inflammatory capacity of gibel carp (Carassius auratus gibelio) challenged with Aeromonas hydrophila. FISH & SHELLFISH IMMUNOLOGY 2022; 123:479-488. [PMID: 35314333 DOI: 10.1016/j.fsi.2022.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/21/2022] [Accepted: 03/07/2022] [Indexed: 06/14/2023]
Abstract
Paeonol, a naturally occurring polyphenol isolated from medical plant, has been known to exhibit anti-oxidative and anti-inflammatory effects. In order to evaluate the effect of paeonol on Carassius auratus gibelio infected by pathogenic bacteria Aeromonas hydriphila. 750 fish were randomly divided into 5 groups, which separately treated with 0.85% sterile saline (blank), A. hydriphila (negative control), A. hydriphila with paeonol (4 mg/kg, 64 mg/kg), and A. hydriphila with enrofloxacin (12 mg/kg, positive control). Fish were anaesthetized with MS-222 (100 mg/L), and samples were collected at 6 and 72 h after A. hydriphila challenge. The results showed that compared with the negative group, the survival in paeonol groups marked increased by 14.75% and 18.94%. The plasma immunoglobulin M (IgM) was notably increased, and low density lipoprotein (LDL) was significantly decreased in paeonol groups at 6 h (P < 0.05). The antioxidative enzymes catalase (CAT), total antioxidant capacity (T-AOC) and glutathione peroxidase (GSH-Px) were significantly increased in paeonol groups at 6 h, while malondialdehyde (MDA) and myeloperoxidase (MPO) contents were lower (P < 0.05). The inflammatory related genes MyD88 and TLR-5 were significantly downregulated, and the TLR-3 was significantly increased in paeonol groups at 72 h (P < 0.05). In addition, histopathological analyses showed that the lesion in liver, spleen and caudal kidney were considerably attenuated in paeonol groups. In conclusion, paeonol could increase the survival rate, mitigate oxidative damage, inflammation, tissue lesions, and improve the immunity of gibel carp challenged with A. hydrophila.
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Affiliation(s)
- Yipeng Gu
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
| | - Kai Chen
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Bingwen Xi
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China.
| | - Jun Xie
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China.
| | - Xuwen Bing
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
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13
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Synthesis of the Aeromonas veronii strain Bs8 disaccharide repeating unit. Carbohydr Res 2022; 514:108530. [PMID: 35263695 PMCID: PMC8983578 DOI: 10.1016/j.carres.2022.108530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/23/2022] [Accepted: 02/24/2022] [Indexed: 11/24/2022]
Abstract
Presented herein is the synthesis of the Aeromonas veronii disaccharide repeating unit which has been achieved in 11 steps starting from d-fucose and d-galactosamine.
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14
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Zhao Z, He R, Chu P, Cai H, Shen H, Zhao Z, Feng S, Cao D, Liao M, Gan G, Ye H, Chen Z, Qiu W, Deng J, Ming F, Ma M, Jia J, Wu J, Huang H, Sun C, Li J, Zhang L. YBX has functional roles in CpG-ODN against cold stress and bacterial infection of Misgurnus anguillicaudatus. FISH & SHELLFISH IMMUNOLOGY 2021; 118:72-84. [PMID: 34474150 DOI: 10.1016/j.fsi.2021.08.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 08/15/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
Misgurnus anguillicaudatus (M. anguillicaudatus) is a widely cultivated fish. However, in M. anguillicaudatus breeding, the frequent cold stress during daily breeding could induce immune suppression and increase the risk of infection, causing serious economic loss. Based on existing findings, CpG Oligonucleotides (CpG-ODNs) may be an ideal protective agent for low temperature fish breeding, performing anti-infective when faced with cold stress with cold shock proteins Y box binding proteins (YBX). Although YBX has pleiotropic functions, its roles in CpG-ODNs-mediated immunity (especially under cold situations) remain largely unexplored. To clarify the relationship among them, we identified the YBX1/YBX2 in M. anguillicaudatus and analyzed using a series of bioinformatics methods. After that, we immunized the fish with 3 types of CpG-ODNs and challenged with Aeromonas hydrophila (A. hydrophila). Here we showed that the best anti-bacterial effect of CpG-B was accompanied by the significant upregulation of YBX1. And the detection of the YBX1 downstream effectors confirmed that CpG-B induced the YBX1-mediated Th1 oriented responses to A. hydrophila by regulation of the NLRP3 (Caspase-A/-B), IL-1β, IL-12 and IFN-γ. Afterwards, we found that under cold stress, CpG-B can activate the NLRP3 and NF-κB pathways through YBX1, a key mediator of anti-A. hydrophila in CpG-B immunization. In this study, we demonstrated CpG-B protection against infection in low temperature, and its interaction with YBX1, expanded the research of CpG-ODN under cold stress, and provided a new CpG-ODN application for low temperature fish farming.
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Affiliation(s)
- Zengjue Zhao
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Rongxiao He
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Pinpin Chu
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Haiming Cai
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Haokun Shen
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Zitong Zhao
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Saixiang Feng
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Ding Cao
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Ming Liao
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Guanhua Gan
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Hejia Ye
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Zhiyang Chen
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Weihong Qiu
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Jinbo Deng
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Feiping Ming
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Miaopeng Ma
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Junhao Jia
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Jiahui Wu
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Haobin Huang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Chongjun Sun
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Jiayi Li
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Linghua Zhang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China.
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Marcusso PF, da Silva Claudiano G, Yunis-Aguinaga J, de Almeida Marinho-Neto F, Eto SF, Fernandes DC, Rosolem MC, Salvador R, Engracia de Moraes JR, Ruas de Moraes F. Immunogenicity in Oreochromis niloticus vaccinated with sonicated antigens against streptococcosis. FISH & SHELLFISH IMMUNOLOGY 2021; 115:134-141. [PMID: 34098067 DOI: 10.1016/j.fsi.2021.04.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 04/26/2021] [Accepted: 04/29/2021] [Indexed: 06/12/2023]
Abstract
Streptococcosis causes great economic losses in intensive culture of tilapia. Vaccination is the most effective and safest way to tackle infectious diseases. Thus, this study sought the more effective and safer antigenic fraction after sonication of Streptococcus agalactiae to elaborate a vaccine against streptococcosis in Nile tilapia. For this, twenty-one days after vaccination with different fractions (soluble and insoluble) of S. agalactiae, the fish were challenged with the homologous strain (LD50). Then, samples were taken at zero, 14, 28, 60 and 90 days post-vaccination (DPV, n = 7). Blood and organs (cranial kidney, spleen and liver) were collected from vaccinated and unvaccinated fish. Finally, insoluble fraction vaccine presented the best effect, resulting in a 100% relative percent of survival (RPS) and without clinical manifestations. In view of the results, it was to evaluate the role of the insoluble fraction of the antigen in the protective immunity against streptococcosis. The results indicate that the spleen might be the main organ in the vaccine response in Nile tilapia due to the great morphological and immunological differences in vaccinated fish, evidenced by the greater of melanomacrophage centers (MMC) and IgM + lymphocytes in relation to the non-vaccinated fish. At 60 DPV, it was observed the peak of the protective immunity related to the maximum concentration of proteins, circulating leukocytes, antibody titers in the serum and tissue changes with greater expression of IgM + and MMC number in the spleen and kidney of Oreochromis niloticus. Vaccination with insoluble fraction of S. agalactiae was safe and provided effective protection against streptococcosis with maximum protective response at 60 DPV.
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Affiliation(s)
- Paulo Fernandes Marcusso
- Institute of Agricultural Sciences, Federal University of the Jequitinhonha and Mucuri Valleys, Israel; Department of Pathology, Theriogenology and One Health, Faculty of Agrarian and Veterinarian Sciences, São Paulo State University (UNESP), Unesp, Brazil.
| | - Gustavo da Silva Claudiano
- Department of Pathology, Theriogenology and One Health, Faculty of Agrarian and Veterinarian Sciences, São Paulo State University (UNESP), Unesp, Brazil; Institute of Biodiversity and Forests, Federal University of Western Pará, UFOPA, Pará, Brazil; Postgraduated Program in Aquaculture/Aquaculture Center São Paulo State University (UNESP) Jaboticabal, São Paulo, Brazil.
| | - Jefferson Yunis-Aguinaga
- Scientific University of the South, Lima, Peru; Sea Institute of Peru, Callao, Peru; Postgraduated Program in Aquaculture/Aquaculture Center São Paulo State University (UNESP) Jaboticabal, São Paulo, Brazil.
| | - Fausto de Almeida Marinho-Neto
- Department of Pathology, Theriogenology and One Health, Faculty of Agrarian and Veterinarian Sciences, São Paulo State University (UNESP), Unesp, Brazil.
| | - Silas Fernandes Eto
- Department of Pathology, Theriogenology and One Health, Faculty of Agrarian and Veterinarian Sciences, São Paulo State University (UNESP), Unesp, Brazil; Department of Postgraduate in Health Sciences-PROCISA, Federal University of Roraima (UFRR), Boa Vista, Brazil.
| | - Dayanne Carla Fernandes
- Department of Pathology, Theriogenology and One Health, Faculty of Agrarian and Veterinarian Sciences, São Paulo State University (UNESP), Unesp, Brazil; Institute of Chemistry, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil.
| | - Mayara Caroline Rosolem
- Department of Pathology, Theriogenology and One Health, Faculty of Agrarian and Veterinarian Sciences, São Paulo State University (UNESP), Unesp, Brazil; Veterinary Pathologist Autonomous,.Brazil.
| | | | - Julieta Rodini Engracia de Moraes
- Department of Pathology, Theriogenology and One Health, Faculty of Agrarian and Veterinarian Sciences, São Paulo State University (UNESP), Unesp, Brazil; Postgraduated Program in Aquaculture/Aquaculture Center São Paulo State University (UNESP) Jaboticabal, São Paulo, Brazil.
| | - Flávio Ruas de Moraes
- Department of Pathology, Theriogenology and One Health, Faculty of Agrarian and Veterinarian Sciences, São Paulo State University (UNESP), Unesp, Brazil.
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16
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Mazumder A, Choudhury H, Dey A, Sarma D. Isolation and characterization of two virulent Aeromonads associated with haemorrhagic septicaemia and tail-rot disease in farmed climbing perch Anabas testudineus. Sci Rep 2021; 11:5826. [PMID: 33712685 PMCID: PMC7971006 DOI: 10.1038/s41598-021-84997-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 02/16/2021] [Indexed: 01/27/2023] Open
Abstract
Diseased Anabas testudineus exhibiting signs of tail-rot and ulcerations on body were collected from a fish farm in Assam, India during the winter season (November 2018 to January 2019). Swabs from the infected body parts were streaked on sterilized nutrient agar. Two dominant bacterial colonies were obtained, which were then isolated and labelled as AM-31 and AM-05. Standard biochemical characterisation and 16S rRNA and rpoB gene sequencing identified AM-31 isolate as Aeromonas hydrophila and AM-05 as Aeromonas jandaei. Symptoms similar to that of natural infection were observed on re-infecting both bacteria to disease-free A. testudineus, which confirmed their virulence. LC50 was determined at 1.3 × 104 (A. hydrophila) and 2.5 × 104 (A. jandaei) CFU per fish in intraperitoneal injection. Further, PCR amplification of specific genes responsible for virulence (aerolysin and enterotoxin) confirmed pathogenicity of both bacteria. Histopathology of kidney and liver in the experimentally-infected fishes revealed haemorrhage, tubular degeneration and vacuolation. Antibiotic profiles were also assessed for both bacteria. To the best of our knowledge, the present work is a first report on the mortality of farmed climbing perch naturally-infected by A. hydrophila as well as A. jandaei, with no records of pathogenicity of the latter in this fish.
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Affiliation(s)
- Abhishek Mazumder
- Department of Zoology, Gauhati University, Guwahati, Assam, 781014, India
| | | | - Abhinit Dey
- Department of Zoology, Gauhati University, Guwahati, Assam, 781014, India
| | - Dandadhar Sarma
- Department of Zoology, Gauhati University, Guwahati, Assam, 781014, India.
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17
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Wang B, Mao C, Feng J, Li Y, Hu J, Jiang B, Gu Q, Su Y. A First Report of Aeromonas veronii Infection of the Sea Bass, Lateolabrax maculatus in China. Front Vet Sci 2021; 7:600587. [PMID: 33553279 PMCID: PMC7855973 DOI: 10.3389/fvets.2020.600587] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 12/21/2020] [Indexed: 11/13/2022] Open
Abstract
The sea bass, Lateolabrax maculatus is commercially farmed in Zhuhai, located in the Guangdong Province of China. L. maculatus in aquaculture have suffered acute death, characterized by ulcerations on the body surface, congestion, and hemorrhage in internal organs such as liver, kidney, and spleen. The dominant infecting strain of bacteria isolated from the kidneys of diseased fish was identified as Aeromonas veronii (strain 18BJ181). This identification was based on analysis of morphological, physiological, and biochemical features, as well as 16S rRNA and gyrB gene sequences. Drug sensitivity testing showed that the strain 18BJ181 isolate was resistant to four antibacterial drugs, including amoxicillin, madinomycin, penicillin and sulfamethoxazole, while moderately sensitive to erythromycin and rifampicin. The detection of growth characteristics showed that the strain 18BJ181 exhibited adaptability to the environment. In addition, some virulence genes, such as aer, act, gcaT, tapA and fla, were detected in the strain 18BJ181. The median lethal dosage of the strain 18BJ181 isolate in L. maculatus was 8.5 × 105 and 4.2 × 105 cfu/g under the conditions of intraperitoneal injection and intramuscular injection, respectively. The experimentally induced infection showed that the 18BJ181 isolate caused considerable histological lesions in L. maculatus, including tissue degeneration, necrosis, and different degrees of hemorrhage. These results provided evidence for a more comprehensive understanding of A. veronii strain 18BJ181 infection in L. maculatus.
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Affiliation(s)
- Baotun Wang
- Innovative Institute of Animal Healthy Breeding, Zhongkai University of Agriculture and Engineering, Guangzhou, China.,Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, China.,National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China
| | - Can Mao
- Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Juan Feng
- Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Yong Li
- Modern Agricultural Development Center of Zhuhai City, Zhuhai, China
| | - Jianmei Hu
- Innovative Institute of Animal Healthy Breeding, Zhongkai University of Agriculture and Engineering, Guangzhou, China.,Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, China.,National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China
| | - Biao Jiang
- Innovative Institute of Animal Healthy Breeding, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Qunhong Gu
- Modern Agricultural Development Center of Zhuhai City, Zhuhai, China
| | - Youlu Su
- Innovative Institute of Animal Healthy Breeding, Zhongkai University of Agriculture and Engineering, Guangzhou, China.,Modern Agricultural Development Center of Zhuhai City, Zhuhai, China
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18
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Carriero MM, Henrique-Silva F, Meira CM, Gato IMQ, Caetano AR, Lobo FP, Alves AL, Varela ES, Maia AAM. Molecular characterization and gene expression analysis of the pro-inflammatory cytokines IL-1β and IL-8 in the South American fish Piaractus mesopotamicus challenged with Aeromonas dhakensis. Genet Mol Biol 2020; 43:e20200006. [PMID: 33174977 PMCID: PMC7687281 DOI: 10.1590/1678-4685-gmb-2020-0006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 08/06/2020] [Indexed: 11/24/2022] Open
Abstract
In the present study, the complete characterization of cDNA and genomic sequences of IL-1β and IL-8, as well as the expression profile of these genes in the South American fish pacu (Piaractus mesopotamicus) is provided. The full-length pmIL-1β cDNA was composed of 1208 nucleotides that would produce a precursor peptide with 273 amino acid residues. A putative caspase-1 cleavage site, similar to what is found in mammalian IL-1β, was identified producing a mature peptide with a theoretical molecular weight of 17.21 kDa. The pmIL-8 cDNA sequence consisted of 1019 nucleotides which encoded a 95-amino acid protein with a theoretical molecular weight of 10.43 kDa that showed all typical CXC chemokine features, including a 20-residue signal peptide and four conserved cysteine residues. Constitutive mRNA expression was detected for both genes in the liver, head kidney, gill, intestine, skin and spleen. After a bacterial challenge, up-regulation was detected for both pmIL-1β and pmIL-8 in the spleen and head kidney at 12 h post-infection. At 24 h post-infection there was a decrease in the expression of both genes, with pmIL-8 showing a significant down-regulation in the liver and head kidney when compared to the control groups.
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Affiliation(s)
- Mateus Maldonado Carriero
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Pirassununga, SP, Brazil
| | - Flavio Henrique-Silva
- Universidade Federal de São Carlos, Departamento de Genética e Evolução, São Carlos, SP, Brazil
| | - Caroline Munhoz Meira
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Pirassununga, SP, Brazil
| | - Igor Mateus Queiroz Gato
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Pirassununga, SP, Brazil
| | - Alexandre Rodrigues Caetano
- Embrapa Recursos Genéticos e Biotecnologia, Empresa Brasileira de Pesquisa Agropecuária, Brasília, DF, Brazil
| | - Francisco Pereira Lobo
- Embrapa Informática na Agricultura, Empresa Brasileira de Pesquisa Agropecuária, Campinas, SP, Brazil
| | - Anderson Luis Alves
- Embrapa Pesca e Aquicultura, Empresa Brasileira de Pesquisa Agropecuária, Palmas, TO, Brazil
| | - Eduardo Sousa Varela
- Embrapa Pesca e Aquicultura, Empresa Brasileira de Pesquisa Agropecuária, Palmas, TO, Brazil
| | - Antonio Augusto Mendes Maia
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Pirassununga, SP, Brazil
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19
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Claudiano GS, de Moraes FR, Fernandes DC, Vantini JS, Yunis-Aguinaga J, Eto SF, Marinho-Neto FA, Macedo HJA, Manrique WG, Moraes JRE. Experimental infection by Aeromonas hydrophila in Piaractus mesopotamicus: DL50, neurological disturbances, and mortality. ACTA ACUST UNITED AC 2020. [DOI: 10.1007/s00580-020-03159-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Li J, Fan Q, Cai H, Deng J, Ming F, Li J, Zeng M, Ma M, Zhao P, Liang Q, Jia J, Zhang S, Zhang L. Identification of RBP4 from bighead carp (Hypophthalmichthys nobilis) / silver carp (Hypophthalmichthys molitrix) and effects of CpG ODN on RBP4 expression under A. hydrophila challenge. FISH & SHELLFISH IMMUNOLOGY 2020; 100:476-488. [PMID: 32209398 DOI: 10.1016/j.fsi.2020.03.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/23/2020] [Accepted: 03/18/2020] [Indexed: 06/10/2023]
Abstract
Retinol-binding protein 4 (RBP4) is known as a highly conserved adipokine for immune activation. Aeromonas hydrophila (A. hydrophila) is the most common zoonotic pathogen in aquaculture, which causes serious economic losses to aquaculture, especially to bighead carp (Hypophthalmichthys nobilis, H. nobilis) and silver carp (Hypophthalmichthys molitrix, H. molitrix). Recent studies along with our previous findings have shown that synthetic oligodeoxynucleotides containing CpG motifs (CpG ODN) can play a good role in aquatic animals against infection. In order to clarify the relationship between CpG ODN and RBP4 under A. hydrophila infection, firstly, full-length RBP4 cDNAs from H. nobilis and H. molitrix were cloned. And characteristics of RBP4, including sequence and structure, tissue distribution and genetic evolution were analyzed. In addition, mRNA expression levels of RBP4, cytokine, toll-like receptors (TLRs), morbidity and survival rates of H. nobilis and H. molitrix were observed post CpG ODN immunization or following challenge. The results indicated that hn/hm_RBP4 (RBP4 genes obtained from H. nobilis and H. molitrix) had the highest homology with Megalobrama amblycephala. Distribution data showed that the expression level of hn_RBP4 mRNA was higher than that of hm_RBP4. After CpG ODN immunization followed by A.hydrophila challenge, significantly higher survival was observed in both carps, together with up-regulated RBP4 expression. Meanwhile, hn/hm_IL-1β level was relatively flat (and decreased), hn/hm_IFN-γ, hn/hm_TLR4 and hn/hm_TLR9 levels increased significantly, but hn/hm_STRA6 showed no significant change, compared with control. Moreover, CpG ODN immunization could induce stronger immune protective responses (higher IFN-γ/gentle IL-1β level and lower morbidity/higher survival rate) against A. hydrophila in H. nobilis, along with higher RBP4 level, when compared with that in H. molitrix. These results demonstrated that RBP4 was well involved in the immune protection of CpG ODN. Based on the results, we speculated that in the case of A. hydrophila infection, TLR9 signaling pathway was activated by CpG ODN. Subsequently, CpG ODN up-regulated RBP4, and RBP4 activated TLR4 signaling pathway. Then TLR4 and TLR9 synergistically improved the anti-infection responses. Our findings have good significance for improving resistance to pathogen infection in freshwater fish.
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Affiliation(s)
- Jiaoqing Li
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Qin Fan
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Haiming Cai
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Jinbo Deng
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Feiping Ming
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Jiayi Li
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Min Zeng
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Miaopeng Ma
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Peijing Zhao
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Qianyi Liang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Junhao Jia
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Shuxia Zhang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Linghua Zhang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, Guangdong, 510642, China.
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Claudiano GS, Andrade SCS, Souza EC, Yunis-Aguinaga J, Coutinho LL, Moreira DKT, Gonçalves FC, Mundim AV, Marzocchi-Machado CM, de Moraes FR, Moraes JRE. Role of neuroendocrine modulation and biochemistry in the sepsis in Piaractus mesopotamicus. Gen Comp Endocrinol 2020; 288:113338. [PMID: 31812532 DOI: 10.1016/j.ygcen.2019.113338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 11/17/2019] [Indexed: 12/26/2022]
Abstract
Sepsis is a systemic process with multifactorial pathophysiology that affects most animal species. It is responsible for high rates of morbidity and mortality. This work aimed to study the biochemical and neuroendocrine changes of the sepsis process in Piaractus mesopotamicus after Aeromonas hydrophila inoculation analyzing changes in blood leukocyte and differences in neuroendocrine-biochemical modulation using RNA-seq. Fish showed hypercortisolemia, inhibition of glucose absorption, followed by hypocortisolemia and then hyperglycemia. Thyroid hormones (T3 and T4) showed immediate decrease in serum and T4 increased 6 h post-inoculation (HPI). Sepsis-induced hormonal alterations triggered changes in the metabolic pathways increasing protein and lipid catabolism, use of transient anaerobic glycolysis and liver injury. A reference transcriptome was constructed based on blood leukocytes from P. mesopotamicus. The assembly resulted in total 266,272 contigs with a N50 of 2786 bp. There was a reorganization of plasma membrane of leukocytes at the beginning of the septic process with increased expression of neuroendocrine receptors and with continuous flow of neurotransmitters, hormones and solutes with compensatory regulation at 6 HPI. Three and nine HPI seemed to be critical, the expression of a number of transcription factors was increased, including the modulatory DEGs related to glucocorticoid and thyroid hormones induced and suppressed (FDR < 0.05). Neuroendocrine modulation can regulate leukocytes and biochemical parameters of peripheral blood, being important sources for the study of the pathophysiology of sepsis. These finding highlights the importance of further studies focusing on biochemical-neuroendocrine changes in blood leukocytes and systemic sepsis.
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Affiliation(s)
- Gustavo S Claudiano
- Department of Veterinarian Pathology, Faculty of Agrarian and Veterinarian Sciences, São Paulo State University, Unesp, Jaboticabal, Brazil; Institute of Biodiversity and Forests, Federal University of Western Pará, UFOPA, Santarém, PA, Brazil.
| | - Sónia C S Andrade
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, São Paulo University, USP, Brazil
| | - Elaine C Souza
- Educational Foundation of Penápolis, FUNEPE, Penápolis, São Paulo, Brazil
| | - Jefferson Yunis-Aguinaga
- Aquaculture Center of UNESP, Jaboticabal, São Paulo, Brazil; Instituto del Mar del Perú, IMARPE, Lima, Perú
| | - Luiz L Coutinho
- Department of Animal Science, São Paulo University, USP, ESALQ, Brazil
| | - Débora K T Moreira
- Institute of Biodiversity and Forests, Federal University of Western Pará, UFOPA, Santarém, PA, Brazil
| | - Felipe C Gonçalves
- Clinical Analysis Laboratory, Veterinary Hospital, Federal University of Uberlândia, UFU, Uberlândia, MG, Brazil
| | - Antonio V Mundim
- Clinical Analysis Laboratory, Veterinary Hospital, Federal University of Uberlândia, UFU, Uberlândia, MG, Brazil
| | - Cleni M Marzocchi-Machado
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, USP, Brazil
| | - Flávio R de Moraes
- Department of Veterinarian Pathology, Faculty of Agrarian and Veterinarian Sciences, São Paulo State University, Unesp, Jaboticabal, Brazil; Aquaculture Center of UNESP, Jaboticabal, São Paulo, Brazil
| | - Julieta R E Moraes
- Department of Veterinarian Pathology, Faculty of Agrarian and Veterinarian Sciences, São Paulo State University, Unesp, Jaboticabal, Brazil; Aquaculture Center of UNESP, Jaboticabal, São Paulo, Brazil.
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Chen F, Sun J, Han Z, Yang X, Xian JA, Lv A, Hu X, Shi H. Isolation, Identification and Characteristics of Aeromonas veronii From Diseased Crucian Carp ( Carassius auratus gibelio). Front Microbiol 2019; 10:2742. [PMID: 32038507 PMCID: PMC6988821 DOI: 10.3389/fmicb.2019.02742] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 11/11/2019] [Indexed: 11/13/2022] Open
Abstract
Aeromonas species often cause disease in farmed fish. In the present study, dominant bacteria were isolated from diseased crucian carp (Carassius auratus gibelio). Based on this, a bacterial isolate was tentatively named CFJY-623. This isolate was identified as Aeromonas veronii based on analysis of its morphological, physiological, and biochemical features, as well as 16S rRNA and gyrB gene sequences. Six virulence genes related to pathogenicity including aerolysin, cytotonic enterotoxins, elastase, glycerophospholipid: cholesterol acyltransferase, lipase, and serine protease were identified in this A. veronii isolate. The median lethal dosage (LD50) of the CFJY-623 isolate for crucian carp was determined as 1.31 × 107 CFU/mL. Artificial experimental infection showed that the CFJY-623 isolate caused considerable histological lesions in the fish, including tissue cell degeneration, necrosis, and inflammatory cell infiltrating. Drug sensitivity testing showed that the isolate was susceptible to aminoglycosides, carbapenemes, and nitrofurans. Exploring its growing features showed that this isolate exhibited a high level of environmental adaptability. These results provided a scientific basis for the identification of A. veronii and treatment for fish infected by this pathogen.
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Affiliation(s)
- Feng Chen
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, Fisheries College, Tianjin Agricultural University, Tianjin, China
| | - Jingfeng Sun
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, Fisheries College, Tianjin Agricultural University, Tianjin, China
| | - Zhuoran Han
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, Fisheries College, Tianjin Agricultural University, Tianjin, China
| | - Xijun Yang
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, Fisheries College, Tianjin Agricultural University, Tianjin, China
| | - Jian-an Xian
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Aijun Lv
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, Fisheries College, Tianjin Agricultural University, Tianjin, China
| | - Xiucai Hu
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, Fisheries College, Tianjin Agricultural University, Tianjin, China
| | - Hongyue Shi
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, Fisheries College, Tianjin Agricultural University, Tianjin, China
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