Relationships between the occurrence of Giardia and Cryptosporidium and physicochemical properties of marine waters of the Pacific Coast of Mexico

Magana-Ordorica, Dalia; Mena, Kristina D.; Valdez-Torres, José Benigno; Soto-Beltrán, Marcela; León‐Félix, Josefina; Cháidez, Cristóbal

doi:10.2166/wh.2010.130

Cited by 7 publications

(6 citation statements)

References 12 publications

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“…Oocysts have been shown to survive for at least 12 months in seawater (Tamburrini and Pozio, 1999), but will be affected by temperature, salinity and amount of UV light (Nasser et al, 2007). The presence of Cryptosporidium oocysts will be dependent on the amount of faecal contamination, for example, in a site in Mexico oocysts where detected in more than 83 % of the samples at a concentration range of 150 to 2,050 oocysts/10 L (Magana-Ordorica et al, 2010). Because of the extreme persistence of Cryptosporidium oocysts in marine environments, these may persist in the absence of bacteria indicators of faecal contamination (Abdelzaher et al, 2010;Graczyk et al, 2010;Wilkes et al, 2011).…”

Section: Data Linking Presence In Seawater To Food-borne Illnessmentioning

confidence: 99%

“…Giardia cysts can be concentrated by filter-feeding shellfish and survive for at least 14 days (Graczyk et al, 2006;Graczyk et al, 1999). The presence of Giardia cysts will be dependent on the amount of faecal contamination, for example in a site in Mexico, cysts where detected in more than 70 % of the samples at a concentration range of 10-300 cysts/10 L (Magana-Ordorica et al, 2010).…”

Section: Cryptosporidium Giardia and Toxoplasmamentioning

confidence: 99%

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Scientific Opinion on the minimum hygiene criteria to be applied to clean seawater and on the public health risks and hygiene criteria for bottled seawater intended for domestic use

Publication¹

2012

EFS2

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Document VersionPublisher's PDF, also known as Version of record SUMMARYFollowing a request from the European Commission, the Panel on Biological Hazards (BIOHAZ) and the Panel on Contaminants in the Food Chain (CONTAM) were asked deliver a scientific opinion on the minimum hygiene criteria to be applied to clean seawater and on the public health risks and hygiene criteria for bottled seawater intended for domestic use.European food legislation establishes the conditions for the use of clean seawater in land-based fishery establishments. Currently, the use of clean seawater is allowed for use in on-shore establishments, auctions and fish markets, for the handling and washing of fishery products, the production of ice for chilling fishery products and for rapid cooling of crustaceans and molluscs after their cooking. Nonetheless, there are no harmonised rules in the European legislation with regard to the sanitary criteria that clean seawater should respect.Based on incidents of food and waterborne infection, the properties and the distribution of the agents, microbiological hazards (including viruses, bacteria and parasites) have been associated with seawater. Poor quality sea water may consequently have a severe impact on public health through contamination which may occur during food processes. The hazards are associated either with bacteria, which are part of the natural marine biota (in particular Vibrio spp.), or pathogenic microbes derived from animal or human faecal contamination, which is most often of terrestrial origin. Nonetheless, there is currently not sufficient data on microbiological hazards to estimate the public health risks associated with the uses in on-land establishments for handling and washing fishery products, for the production of ice used for chilling, for rapid cooling of crustaceans and molluscs after cooking, and for bottled seawater. In the absence of data to propose risk-based criteria, hazard-based criteria are proposed instead. These should provide the same level of health protection as achieved by other food business operators through the use of potable water.It is underlined that coastal sources, used for abstraction of seawater in land-based establishments, cannot be guaranteed to be free from pathogens from the marine biota or from faecal contamination, and cannot be classified as a pristine source.Sanitary surveys provide information to optimize the site of abstraction in order to control sources of faecal pollution and chemical contamination. Additional safeguards will be needed to reduce contamination from endogenous marine flora (including pathogenic Vibrio spp. and C. botulinum). Since these hazards are associated with temperature and salinity (Vibrio spp.) as well as sediments (C. botulinum), abstracting seawater with high salinity (especially in waters of temperatures below 20 ºC), and free from particulate material will improve safety of seawater prior to treatment. The comprehensiveness of the sanitary survey, the stringency of microbiological criteria and the nee...

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Section: Data Linking Presence In Seawater To Food-borne Illnessmentioning

confidence: 99%

Section: Cryptosporidium Giardia and Toxoplasmamentioning

confidence: 99%

Scientific Opinion on the minimum hygiene criteria to be applied to clean seawater and on the public health risks and hygiene criteria for bottled seawater intended for domestic use

Publication¹

2012

EFS2

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“…On the Pacific coast of Mexico, 78.1% (25/32) of marine water samples were positive for Cryptosporidium spp., and 65.6% (21/32) for Giardia spp. (Magana-Ordorica et al, 2010). Cryptosporidium spp.…”

Section: Introductionmentioning

confidence: 99%

Blue mussel ( Mytilus edulis )—A bioindicator of marine water contamination by protozoa: Laboratory and in situ approaches

Bigot-Clivot

Carbona

Cazeaux

et al. 2021

J of Applied Microbiology

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Aims:The protozoan parasites Cryptosporidium spp., Giardia duodenalis and Toxoplasma gondii are identified as public health priorities and are present in a wide variety of environments including the marine ecosystem. The objective of this study was to demonstrate that the marine bivalve blue mussel (Mytilus edulis) can be used as a tool to monitor the contamination of marine waters by the three protozoa over time. Methods and Results:In order to achieve a proof of concept, mussels were exposed to three concentrations of G. duodenalis cysts and Cryptosporidium parvum/T. gondii oocysts for 21 days, followed by 21 days of depuration in clear water. Then, natural contamination by these protozoa was sought for in wild marine blue mussels along the northwest coast of France to validate their relevance as bioindicators in the field. Our results highlighted that: (a) blue mussels bioaccumulated the parasites for 21 days, according to the conditions of exposure, and parasites could still be detected during the depuration period (until 21 days); (b) the percentage of protozoa-positive M. edulis varied under the degree of protozoan contamination in water; (c) mussel samples from eight out of nine in situ sites were positive for at least one of the protozoa. Conclusions:The blue mussel M. edulis can bioaccumulate protozoan parasites over long time periods, according to the degree of contamination of waters they are inhabiting, and can highlight recent but also past contaminations (at least 21 days). Significance and Impact of the Study: Mytilus edulis is a relevant bioaccumulators of protozoan (oo)cysts in laboratory and field conditions, hence its potential use for monitoring parasite contamination in marine waters.

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“…no ambiente aquático. A presença de (oo)cistos destes parasitas já foi relatada em diversos países em águas tratadas e em águas brutas, provenientes de fontes superficiais (rios, lagos e mares) bem como de fontes subterrâneas e pluviais (MACKENZIE et al, 1994;SIMMONS et al, 2001;DI BENEDETTO et al, 2005;COUPE et al, 2006;SUNDERLAND et al, 2007;GAUT et al, 2008;PÉREZ-CORDÓN et al, 2008;YANG et al, 2008;LIM et al, 2009;MAGANA-ORDORICA et al, 2010;NETO et al, 2010;FREGONESI et al, 2012;SATO et al, 2013).…”

Section: Protozoários Parasitas Emergentes E Reemergentes De Veiculaçunclassified

“…As parasitoses intestinais ocupam altos índices de prevalência mundial e representam sérios problemas de saúde pública, especialmente para pessoas com o sistema imunológico menos competitivo. TAKAYANAGUI et al, 2007;NIKAIDO et al, 2010;RAGAZZI, 2012 (MACKENZIE et al, 1994;SIMMONS et al, 2001;DI BENEDETTO et al, 2005;COUPE et al, 2006;SUNDERLAND et al, 2007;GAUT et al, 2008;PÉREZ-CORDÓN et al, 2008;YANG et al, 2008;LIM et al, 2009;MAGANA-ORDORICA et al, 2010;NETO et al, 2010;FREGONESI et al, 2012;SATO et al, 2013). Também há estudos mencionando a presença de (oo) cistos desses protozoários potencialmente patogênicos em águas de piscinas de crianças e adultos, uma vez que, são resistentes à condições adversas do meio, podendo sobreviver por vários meses em água, mesmo que cloradas (LOUIE et al, 2004;SCHETS;ENGELS;EVERS, 2004;ABDEL-SALAM, 2012 (FUNADA et AL., 2007;ALMEIDA et al, 2010;SILVA, 2010 ;CARNEIRO, 2007;BARRETT et al, 2008;LOPES et al, 2010;SILVA et al, 2011).…”

Section: Condicionantes Socioambientais Que Influenciam As Enteroparaunclassified

Prevalência de parasitas emergentes e reermergentes de veiculação hídrica em crianças que vivem com HIV/aids: ênfase paraGiardia spp. e Cryptosporidium spp

Fregonesi¹

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Primeiramente agradeço a Deus, que me proporcionou mais esta oportunidade de crescimento pessoal e profissional. Por sempre estar no comando do meu caminho, me guiando, me protegendo e me iluminando. Pelas inúmeras providências e maravilhas que tem feito em minha vida! À minha querida orientadora Profa. Dra. Susana Inés Segura-Muñoz, pela confiança em minha capacidade, pela excelente orientação, por sua incansável paciência e inestimável competência. Agradeço também por me proporcionar um dos bens mais valiosos: o conhecimento. Obrigada por tudo! "Feliz daquele que transfere o que sabe e aprende o que ensina" (Cora Coralina). À minha família. Aos meus pais Janete e Luiz Carlos, e aos meus irmãos, André Felipe e Marcus Tiago, pela convivência diária, paciência, carinho e amor. Fê, não poderia me esquecer das inúmeras vezes que me carregou por toda cidade de Ribeirão Preto para buscar amostras comigo. Muito obrigada! Ao meu namorado e amigo Danilo Padula por sempre acreditar no que há de melhor em mim, por me ensinar a amar e ser amada e por toda paciência comigo durante a realização deste projeto. "Meu riso é tão feliz contigo, o meu melhor amigo é o meu amor"... À Dra. Maria Célia Cervi, por ter possibilitado a realização deste projeto. Pelas considerações de extrema valia, pela paciência, disponibilidade e ajuda.

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Relationships between the occurrence of Giardia and Cryptosporidium and physicochemical properties of marine waters of the Pacific Coast of Mexico

Cited by 7 publications

References 12 publications

Scientific Opinion on the minimum hygiene criteria to be applied to clean seawater and on the public health risks and hygiene criteria for bottled seawater intended for domestic use

Scientific Opinion on the minimum hygiene criteria to be applied to clean seawater and on the public health risks and hygiene criteria for bottled seawater intended for domestic use

Blue mussel ( Mytilus edulis )—A bioindicator of marine water contamination by protozoa: Laboratory and in situ approaches

Prevalência de parasitas emergentes e reermergentes de veiculação hídrica em crianças que vivem com HIV/aids: ênfase paraGiardia spp. e Cryptosporidium spp

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