PMID- 34344057 OWN - NLM STAT- MEDLINE DCOM- 20220524 LR - 20220602 IS - 1758-2229 (Electronic) IS - 1758-2229 (Linking) VI - 14 IP - 3 DP - 2022 Jun TI - Genotypes and phenotypes of methicillin-resistant staphylococci isolated from shrimp aquaculture farms. PG - 391-399 LID - 10.1111/1758-2229.12995 [doi] AB - The population of methicillin-resistant (MR) staphylococci in aquatic environment is rarely investigated. Here, we characterized a collection of MR staphylococci recovered from shrimp aquaculture farms (n = 37) in Kerala, India. A total of 261 samples yielded 47 MR isolates (16 S. aureus, 13 S. haemolyticus, 11 S. epidermidis, 3 S. saprophytics and 2 each of S.intermedius and S. kloosii). Multi-drug resistance was evident in 72.3% of the isolates, with resistance mainly towards erythromycin (78.7%), norfloxacin and trimethoprim-sulfamethoxazole (53.2%), and gentamicin (34%). Major resistance genes identified included mecA (100%), ermC (38.3%), aacA-aphD (21.3%), tetK (14.9%) and tetM (21.3%). Almost 60% of the isolates carried type V SCCmec (Staphylococcal Cassette Chromosome mec), and the remaining harboured untypeable SCCmec elements. Comprehensive genotyping of the methicillin-resistant Staphylococcus aureus isolates revealed high prevalence of ST772-t345-V (sequence type-spa type-SCCmec type) (75%), followed by minor representations of ST6657-t345-V and ST3190-t12353. The isolates of S. haemolyticus and S. epidermidis were genotypically diverse as shown by their pulsed-field gel electrophoresis (PFGE) profiles. Genes encoding staphylococcal enterotoxins were observed in 53.2% of the isolates. Various genes involved in adhesion and biofilm formation were also identified. In conclusion, our findings provide evidence that shrimp aquaculture settings can act as reservoirs of methicillin-resistant staphylococci. CI - (c) 2021 Society for Applied Microbiology and John Wiley & Sons Ltd. FAU - Rajan, Vineeth AU - Rajan V AUID- ORCID: 0000-0003-0648-1610 AD - Microbiology, Fermentation and Biotechnology Division, ICAR-Central Institute of Fisheries Technology, Cochin, Kerala, India. FAU - Sivaraman, Gopalan Krishnan AU - Sivaraman GK AD - Microbiology, Fermentation and Biotechnology Division, ICAR-Central Institute of Fisheries Technology, Cochin, Kerala, India. FAU - Vijayan, Ardhra AU - Vijayan A AD - Microbiology, Fermentation and Biotechnology Division, ICAR-Central Institute of Fisheries Technology, Cochin, Kerala, India. FAU - Elangovan, Ravikrishnan AU - Elangovan R AD - Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, India. FAU - Prendiville, Alison AU - Prendiville A AD - Division of Infection and Pathway Medicine, Edinburgh Medical School, University of Edinburgh, Edinburgh, UK. FAU - Bachmann, Till T AU - Bachmann TT AD - London College of Communication, University of the Arts London, London, UK. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210803 PL - United States TA - Environ Microbiol Rep JT - Environmental microbiology reports JID - 101499207 RN - 0 (Anti-Bacterial Agents) SB - IM MH - Anti-Bacterial Agents/pharmacology MH - Aquaculture MH - Genotype MH - Methicillin Resistance/genetics MH - *Methicillin-Resistant Staphylococcus aureus/genetics MH - Microbial Sensitivity Tests MH - Phenotype MH - Staphylococcus/genetics MH - Staphylococcus aureus EDAT- 2021/08/04 06:00 MHDA- 2022/05/25 06:00 CRDT- 2021/08/03 20:32 PHST- 2021/07/18 00:00 [revised] PHST- 2021/05/19 00:00 [received] PHST- 2021/07/19 00:00 [accepted] PHST- 2021/08/04 06:00 [pubmed] PHST- 2022/05/25 06:00 [medline] PHST- 2021/08/03 20:32 [entrez] AID - 10.1111/1758-2229.12995 [doi] PST - ppublish SO - Environ Microbiol Rep. 2022 Jun;14(3):391-399. doi: 10.1111/1758-2229.12995. Epub 2021 Aug 3.