First report of Tunisian coastal water contamination by protozoan parasites using mollusk bivalves as biological indicators
| Autor: | Marianna Marangi, Khemissa Ghozzi, Ibtissem Lahmar, Roberto Amerigo Papini, Hamouda Babba, Rym Ben Dhiab, Najoua Houas, Giovanni Normanno, Rafika Challouf, Annunziata Giangaspero |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Veterinary medicine Tunisia 030106 microbiology 030231 tropical medicine Water contamination Cryptosporidium Aquatic Science Oceanography Cyclospora cayetanensis Microbiology 03 medical and health sciences Human health Ruditapes decussatus 0302 clinical medicine parasitic diseases Animals biology Giardia Oocysts Toxoplasma gondii biology.organism_classification Bivalve mollusks Cryptosporidium spp. Toxoplasma gondii Giardia duodenalis Cyclospora cayetanensis qPCR Tunisia Pollution Bivalvia Cyclospora Giardia duodenalis Toxoplasma Environmental Monitoring |
| Popis: | In order to establish seawater contamination by emerging protozoan parasites, we used qPCR to molecularly characterize and evaluate the parasitic burden of Giardia duodenalis, Cryptosporidium spp., Toxoplasma gondii, and Cyclospora cayetanensis in 1255 wild bivalve mollusks collected along the Tunisian coasts. T. gondii, G. duodenalis and C. cayetanensis were detected in 6.9% (99% CI=1.6-12.2%) pools of Ruditapes decussatus. None of the samples were found positive to Cryptosporidium spp.; 6.6% pools of R. decussatus were positive for T. gondii Type I, 1.6% for G. duodenalis assemblage A, and 1.6% for the association T. gondii Type I/C. cayetanensis/G. duodenalis assemblage A. R. decussatus harbored up to 77500 oocysts/sample of T. gondii, up to 395 cysts/sample of G. duodenalis, and 526 oocysts/sample of C. cayetanensis. These results provide the first evidence that the Tunisian coasts are contaminated by zoonotic protozoan parasites that can constitute a direct or indirect risk for human health. |
| Databáze: | OpenAIRE |
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