Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/320112
Type: Artigo de Periódico
Title: First Report Of Predation Of Giardia Sp Cysts By Ciliated Protozoa And Confirmation Of Predation Of Cryptosporidium Spp. Oocysts By Ciliate Species
Author: Siqueira-Castro
ICV; Greinert-Goulart
JA; Bonatti
TR; Yamashiro
S; Franco
RMB
Abstract: Ciliated protozoa are important components of the microbial food web in various habitats, especially aquatic environments. These organisms are useful bioindicators for both environmental quality assessment and the wastewater purification process. The pathogenic parasitic protozoan species Giardia and Cryptosporidium represent a significant concern for human health, being responsible for numerous disease outbreaks worldwide. The predation of cysts and oocysts in 15 ciliate species from water and sewage samples collected in Campinas, So Paulo, Brazil were verified under laboratory conditions. The ciliated protozoan species were selected based on their mode of nutrition, and only bacterivorous and suspension-feeders were considered for the experiments. The species Blepharisma sinuosum, Euplotes aediculatus, Sterkiella cavicola, Oxytricha granulifera, Vorticella infusionum, Spirostomum minus, and Stentor coeruleus ingested cysts and oocysts, the resistance forms of Giardia spp. and Cryptosporidium spp., respectively. This is the first time that the ingestion of Giardia cysts by ciliated protozoa has been reported. These findings may contribute to a better understanding of the biological removal of these pathogens from aquatic environments.
Subject: Giardia Cysts
Cryptosporidium Oocysts
Predation
Ciliated Protozoa
Editor: SPRINGER HEIDELBERG
Rights: fechado
Identifier DOI: 10.1007/s11356-016-6689-y
Address: http://link.springer.com/article/10.1007%2Fs11356-016-6689-y
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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