Prevalence and Multiple Antibiotic Resistance of &lt;i&gt;Vibrio coralliilyticus&lt;/i&gt;, along the Southwest Coast of India

Silvester, Reshma; Alexander, Deborah; George, Maya; Hatha, A.A. Mohamed

doi:10.18520/cs/v112/i08/1749-1755

Cited by 10 publications

(3 citation statements)

References 25 publications

(40 reference statements)

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“…However, in the present study, A. indica extracts did not completely inhibit the four bacteria tested. The bacteria probably developed a differential resistance against this plant extract in a similar manner as some Vibrio strains have shown resistance to antibiotics [ 9 , 12 , 13 , 14 ]. Pathogenic bacteria can become resistant to antibacterial agents through mutation and selection or by acquiring genetic information that encodes other bacteria [ 25 ].…”

Section: Discussionmentioning

confidence: 99%

“…Some reports show the resistance of Vibrio sp. (isolated from shrimp farms) towards different antibiotics, such as V. coralliiyticus [ 12 ], V. parahaemolyticus associated with acute hepatopancreatic disease (AHPND) [ 13 ], as well as V. navarrensis , V. brasilensis , V. xuii , V. alginolyticus , V. cholera , V. vulnificus [ 9 , 14 ]. Due to the above, antibiotic resistance of Vibrio spp.…”

Section: Introductionmentioning

confidence: 99%

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Salpianthus macrodontus Extracts, a Novel Source of Phenolic Compounds with Antibacterial Activity against Potentially Pathogenic Bacteria Isolated from White Shrimp

et al. 2022

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This study aimed to evaluate the antibacterial activity in vitro of Salpianthus macrodontus and Azadirachta indica extracts against potentially pathogenic bacteria for Pacific white shrimp. Furthermore, the extracts with higher inhibitory activity were analyzed to identify compounds responsible for bacterial inhibition and evaluate their effect on motility and biofilm formation. S. macrodontus and A. indica extracts were prepared using methanol, acetone, and hexane by ultrasound. The minimum inhibitory concentration (MIC) of the extracts was determined against Vibrio parahaemolyticus, V. harveyi, Photobacterium damselae and P. leiognathi. The polyphenol profile of those extracts showing the highest bacterial inhibition were determined. Besides, the bacterial swimming and swarming motility and biofilm formation were determined. The highest inhibitory activity against the four pathogens was found with the acetonic extract of S. macrodontus leaf (MIC of 50 mg/mL for Vibrio spp. and 25 mg/mL for Photobacterium spp.) and the methanol extract of S. macrodontus flower (MIC of 50 mg/mL for all pathogens tested). Both extracts affected the swarming and swimming motility and the biofilm formation of the tested bacteria. The main phenolic compounds related to Vibrio bacteria inhibition were naringin, vanillic acid, and rosmarinic acid, whilst hesperidin, kaempferol pentosyl-rutinoside, and rhamnetin were related to Photobacterium bacteria inhibition.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Salpianthus macrodontus Extracts, a Novel Source of Phenolic Compounds with Antibacterial Activity against Potentially Pathogenic Bacteria Isolated from White Shrimp

et al. 2022

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“…High antibiotic resistance has been found in hatcheries worldwide, as well as higher MAR indexes in hatcheries rather than in shrimp farms [48, 49]. For instance, MAR index ranges from 0.21 to 0.38 have been reported for bacteria isolated from shrimp hatcheries [50, 49], whereas, MAR indexes in shrimp farms range from 0.11 and 0.32 [49–52]. The average MAR index determined in this study is low compared to values reported in other shrimp hatcheries.…”

Section: Discussionmentioning

confidence: 99%

Efficacy assessment of commercially available natural products and antibiotics, commonly used for mitigation of pathogenic Vibrio outbreaks in Ecuadorian Penaeus (Litopenaeus) vannamei hatcheries

et al. 2019

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Bacterial diseases cause high mortality in Penaeus (Litopenaeus) vannamei postlarvae. Therefore, appropriate application of efficient therapeutic products is of vital importance for disease control. This study evaluated through in vitro analyses the antimicrobial effectiveness of commercial therapeutic products used for P. vannamei bacterial diseases and antibiotics against pathogenic Vibrio strains circulating in Ecuadorian hatcheries. Twenty strains were isolated from 31 larvae samples with high bacterial counts from 10 hatcheries collected during mortality events. The strains virulence was verified through challenge tests with Artemia franciscana nauplii and P. vannamei postlarvae. Through 16S rRNA sequence analysis, strains showed a great similarity to the Vibrio sequences reported as pathogens, with 95% belonging to the Harveyi clade. Through antibiograms and minimal inhibitory concentration (MIC) in vitro tests we found that furazolidone, ciprofloxacin, chloramphenicol, norfloxacin, nalidixic acid, florfenicol, fosfomycin and enrofloxacin inhibited the growth of all or most of the strains. Less efficient antibiotics were penicillin, oxytetracycline and tetracycline. A multiple antibiotic resistance (MAR) index of 0.23 showed some level of resistance to antibiotics, with two MAR prevalent patterns (Penicillin-Oxytetracycline and Penicillin-Oxytetracycline-Tetracycline). From a total of 16 natural products (five probiotics, nine organic acids and two essential oils), only three (one probiotic, one organic acid and one essential oil) were effective to control most of the strains. Shrimp producers can apply relatively simple in vitro analyses, such as those employed in this study, to help take adequate management decisions to reduce the impact of bacterial diseases and increase profit.

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Identifying Potential Polymicrobial Pathogens: Moving Beyond Differential Abundance to Driver Taxa

et al. 2020

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Prevalence and Multiple Antibiotic Resistance of <i>Vibrio coralliilyticus</i>, along the Southwest Coast of India

Cited by 10 publications

References 25 publications

Salpianthus macrodontus Extracts, a Novel Source of Phenolic Compounds with Antibacterial Activity against Potentially Pathogenic Bacteria Isolated from White Shrimp

Salpianthus macrodontus Extracts, a Novel Source of Phenolic Compounds with Antibacterial Activity against Potentially Pathogenic Bacteria Isolated from White Shrimp

Efficacy assessment of commercially available natural products and antibiotics, commonly used for mitigation of pathogenic Vibrio outbreaks in Ecuadorian Penaeus (Litopenaeus) vannamei hatcheries

Identifying Potential Polymicrobial Pathogens: Moving Beyond Differential Abundance to Driver Taxa

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