Monitoring of microbiological dynamics in beach sand and seawater samples from recreational and non-recreational beaches over a two-year period

Şanlıtürk, Gizem; Güran, Mümtaz

doi:10.1080/09603123.2021.1931049

Cited by 4 publications

(5 citation statements)

References 31 publications

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“…The percentage of E. coli strains resistant to at least one antibiotic (59.6%) was similar to that obtained in a study conducted on beaches in Brazil [58] and lower than that obtained in other studies in Portugal [56] or China [59], with percentages of up to 80% being observed. Ampicillin resistance was the most frequent observation, confirming that β-lactam resistance was the most prevalent form in the aquatic environment [60,61]. Other antibiotics, such as ciprofloxacin, nalidixic acid, tetracycline, and sulfamethoxazole, were found to have resistance rates ranging from 14% to 18%.…”

Section: Discussionmentioning

confidence: 76%

Antibiotic Resistance in Seawater Samples from East Coast of Spain

Dasí,

Camaró-Sala,

González

et al. 2024

Applied Sciences

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Seawater has been proposed as a reservoir for antibiotic-resistant bacteria and antibiotic resistance genes, thus representing a risk to public health. In this study, we evaluated the presence of antibiotic resistance determinants (bacteria and genes) in 77 seawater samples collected at different points along the coast of the Gulf of Valencia (Spain). Specifically, indicators of fecal contamination bacteria, Escherichia coli and Enterococcus sp., were isolated, and their antibiotic resistance profiles were analyzed through the use of the Sensititre® system, followed by the detection of the main antibiotic resistance genes (blaTEM, qnrS, tetW, sulI, and ermB). The highest frequencies of resistance in the E. coli isolates were detected for ampicillin (35.1%) and ciprofloxacin (17.5%), followed by sulfamethoxazole and trimethoprim (15.7%), while 23% of enterococci isolates showed resistance to a single antibiotic, 20% against tetracycline and 3% against daptomycin. Through PCR analysis, 93% of the E. coli strains showed the blaTEM and sulI resistance genes. Among the enterococci, the presence of the blaTEM gene was detected in 40% of the isolates, while the rest of the genes were present at very low rates. Among the water samples, 57% were positive for at least one of the tested genes, italic format with blaTEM being the most commonly found gene (47%), followed by the qnrS (33%) and sulI (23%) genes. These results show that seawater, in addition to being subjected to a high rate of fecal contamination, can contribute to the spread of antibiotic resistance.

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Section: Discussionmentioning

confidence: 76%

Antibiotic Resistance in Seawater Samples from East Coast of Spain

Dasí,

Camaró-Sala,

González

et al. 2024

Applied Sciences

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“…Some studies correlated the potential contamination of the coastal marine water with Staphylococcus spp. to the beachgoers [23,24].…”

Section: Isolation and Identification Of The Marinementioning

confidence: 99%

Characterization of Opportunistic Pathogenic Multi-Drug Resistant Bacteria Isolated from Marine Coastal Water in Jazan, Saudi Arabia

Al-Garni,

Al Abboud,

Essa

2024

Pol. J. Environ. Stud.

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“…[20]. Those bacteria can be transmitted from beaches to humans through physical contact with water and/or sand during recreational activities [21].…”

Section: Introductionmentioning

confidence: 99%

“…Historically, the assessment of the microbiological quality of seawater has focused on the culture and enumeration of faecal indicator bacteria (FIB) suspended in the water column [21]. International organizations such as the World Health Organization-WHO, the US Environmental Protection Agency and the European Community Commission have recommended the use of Escherichia coli and enterococci as suitable indicators to measure the microbiological quality of the water column [18,22], according to different environmental standards such as the ones established by the Council of Europe (2006/7/EC) [23] and the United States Environmental Protection Agency (Recreational Water Quality Criteria, 2012) [24].…”

Section: Introductionmentioning

confidence: 99%

“…Despite the above, there is presently no worldwide regulation that determines the permitted content for these microorganisms, as in the water column [23,24]. Different authors [19,21,22,25] state that studies are needed to characterize the impact that sediment-bound bacteria have on water quality and the health of bathers in order to standardize sampling and quantification methods, and results such as those shown in this study seek to generate this type of discussion both in the scientific community and among environmental authorities of different countries.…”

Section: Introductionmentioning

confidence: 99%

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A Preliminary Approximation to Microbiological Beach Sand Quality along the Coast of the Department of Atlántico (Caribbean Sea of Colombia): Influence of the Magdalena River

Bolívar-Anillo

Varela

Moreno

et al. 2022

Water

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Beaches represent important economic resources linked to “Sun, Sea and Sand” tourism and, therefore, their water quality constitutes an issue of great relevance especially in developing countries. The main objective of this work was to determine the microbial quality of beach sediments along the Caribbean coast of the Department of Atlántico (Colombia) and its relationships with the existence of local sources of contamination (e.g., streams containing wastewaters), beach exposition to waves, the quantity of beach visitors—which is reflected by beach typology (e.g., urban, rural, etc.), the presence of tourist activities/infrastructures and the beach sand sedimentological characteristics. Along the study area, samples of beach sediments were gathered in beach face and backshore areas at 11 sectors and the microbiological counts of three faecal indicator bacteria, i.e., Escherichia coli, Enterococcus spp. and Clostridium perfringens, were determined. A homogeneous distribution was recorded along the coast of Escherichia coli and Clostridium perfringens in both beach face and backshore sediments, in the order of 5 and 2 log CFU/100 mL, respectively; Enterococcus spp. was, at places, not observed in backshore sediments. No relationships existed between, on one side, the counts of the faecal indicator bacteria considered and, on the other side, the presence of streams and tourist activities/infrastructures, beach typology, exposition to waves and the sedimentological characteristics of beach sands. Such results suggest a chronic contamination of beach face and backshore sediments linked to the heavily polluted sedimentological load of the Magdalena River.

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Monitoring of microbiological dynamics in beach sand and seawater samples from recreational and non-recreational beaches over a two-year period

Cited by 4 publications

References 31 publications

Antibiotic Resistance in Seawater Samples from East Coast of Spain

Antibiotic Resistance in Seawater Samples from East Coast of Spain

Characterization of Opportunistic Pathogenic Multi-Drug Resistant Bacteria Isolated from Marine Coastal Water in Jazan, Saudi Arabia

A Preliminary Approximation to Microbiological Beach Sand Quality along the Coast of the Department of Atlántico (Caribbean Sea of Colombia): Influence of the Magdalena River

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