Fishborne Zoonotic Trematodes Transmitted by<i>Melanoides tuberculata</i>Snails, Peru

Pulido-Murillo, Eduardo A.; Furtado, Luis Fernando Viana; Melo, Alan Lane de; Rabelo, Élida Mara Leite; Pinto, Hudson Alves

doi:10.3201/eid2403.172056

Cited by 26 publications

(14 citation statements)

References 9 publications

(9 reference statements)

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“…Pulido-Murillo et al (2018) recently found evidence of H. pumilio and C. formosanus in the snail Melanoides tuberculata in the department of Lima, Peru [45]. The invasive snail M. tuberculata was found throughout our study area, sharing ponds and streams with the fish species identified as positive here; however, we did not attempt to search for cercariae or test potential Amphimerus sp.…”

Section: Plos Neglected Tropical Diseasesmentioning

confidence: 57%

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Liver fluke infections by Amphimerus sp. (Digenea: Opisthorchiidae) in definitive and fish intermediate hosts in Manabí province, Ecuador

et al. 2020

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Amphimerus sp. is a fluke that dwells in the biliary tracts of vertebrate definitive hosts including humans, domestic, and wild mammals in Latin America. Opisthorchiid liver infections are rarely studied in the Americas confirming its status as a neglected tropical disease. In Ecuador, small trematode eggs were reported in human cases from the province of Manabí in 1949, and recently, Amphimerus sp. adults were recovered from human and reservoir hosts in the province of Esmeraldas. Due to the lack of research on the infectious sources of Amphimerus sp. in the continent, we have developed a series of epidemiological studies with parasitological and molecular techniques to elucidate the endemicity of opisthorchiid fluke infections. We developed a cross-sectional study in three communities at Pedro Pablo Gó mez parish in the province of Manabí, Ecuador. We examined a total of 176 fecal samples to detect opisthorchiid eggs, and four fish species to find opisthorchiid metacercariae. To study adult worms, we treated and purged seven patients in a family and dissected the livers of a dog and a cat infected. We observed morphological features of adults and metacercariae and used polymerase chain reaction with restricted fragment length polymorphism (PCR-RFLP) and DNA sequencing of a section of the ITS2 gene for identification. Small trematode eggs were detected in 63 (35.8%) out of 176 fecal samples of residents in the three study sites. Adult opisthorchiid flukes were recovered from human patients, a dog and a cat, and they were morphologically and molecularly identified as Amphimerus sp. Opisthorchiid metacercariae were also identified molecularly as Amphimerus sp. in four fish species, i.e., Rhoadsia altipinna, Bryconamericus bucay, Andinoacara rivulatus, and Piabucina aureoguttata. Metacercariae of the heterophyid Haplorchis pumilio were also found in the four fish species examined. This is the first study to confirm the current endemicity of PLOS NEGLECTED TROPICAL DISEASES

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Section: Plos Neglected Tropical Diseasesmentioning

confidence: 57%

“…Consumption of infected fish to sustain or complement diets for the populations in Esmeraldas and Manabí, respectively, is an ideal means of maintaining the life cycle of Amphimerus sp. and potentially other trematodes [13,45] (Fig 5).…”

Section: Discussionmentioning

confidence: 99%

Liver fluke infections by Amphimerus sp. (Digenea: Opisthorchiidae) in definitive and fish intermediate hosts in Manabí province, Ecuador

et al. 2020

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“…The current report draws the attention on C. formosanus as an invasive parasite, as well as on other species that could be similarly introduced in Europe, underlining the need for epidemiological studies and appropriate preventive and control programs, in order to monitor their occurrence and prevent their negative consequences for economy, biodiversity, scientific research, animal and public health [6,17,19,20,22,23,[28][29][30]47,48]. Some aspects of biology and epidemiology, regarding both animal and human hosts, should be further explored in Europe [7,17,20,26,47,49]. Teams of experts in "one health" control should be the first actors involved in applying good management and efficient measures, especially during the intentional movement of animals, such as border inspection, accompanying health certification, quarantine measures, and, if necessary, treatment (prior to export or upon arrival) and disinfection procedures [19,22,29,48].…”

Section: Discussionmentioning

confidence: 99%

“…Specifically, fish-borne zoonotic trematodes represent a concerning health issue in many Asian countries [2][3][4][5][6]. Indeed, 20 years ago, the World Health Organization estimated that more than 18 million people infected with fish-borne trematodes, and more than half a billion people at risk of infection worldwide [7,8].…”

Section: Introductionmentioning

confidence: 99%

Diagnosis of Centrocestus formosanus Infection in Zebrafish (Danio rerio) in Italy: A Window to a New Globalization-Derived Invasive Microorganism

Pace

Dipineto

Aceto

et al. 2020

Animals

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Centrocestus formosanus is a digenetic trematode with a complex life cycle, involving invertebrate and vertebrate hosts, humans included. In particular, it causes gill lesions and mortality in freshwater fish species, and gastrointestinal symptoms in infected humans. Here, we describe the occurrence of C. formosanus infection in zebrafish imported in Italy and propose a newly designed species-specific primer pair to ameliorate the diagnostic investigations for C. formosanus. Gill arches of 30 zebrafish were examined for the presence of encysted metacercariae under a stereomicroscope and processed through molecular analyses targeting the ribosomal internal transcribed sequence 2 (ITS2). Although C. formosanus distribution was originally restricted to Asia, it has been subsequently reported in new countries, revealing itself as an invasive species and raising important concerns for biodiversity, economy, scientific research, as well as animal and public health. Given the crucial role played by the ornamental fish industry in spreading this parasite, there is an urgent need for control measures to prevent the introduction and establishment of C. formosanus in non-endemic areas, including Europe. We also suggest developing new strategies in microbiology and epidemiology to better explore this new globalization-derived invasive species.

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“…Centrocestus formosanus Nishigori, 1924, a species considered of zoonotic importance, was introduced in the Americas within its host snail Melanoides tuberculata. It has been reported from Brazil [43][44][45][46][47], Colombia [48], Peru [50] and Venezuela [51]. The life-cycle includes naturally infected fish (metacercariae in the gills) and birds (adults in the intestine) and experimental infections were performed with G. gallus [45] (Table 1).…”

Section: Taxonomy and Life Cyclesmentioning

confidence: 99%

Current Knowledge of Small Flukes (Digenea: Heterophyidae) from South America

Santos

Borges

2020

Korean J Parasitol

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Fish-borne heterophyid trematodes are known to have a zoonotic potential, since at least 30 species are able to infect humans worldwide, with a global infection of around 7 million people. In this paper, a ‘state-of-the-art’ review of the South American heterophyid species is provided, including classical and molecular taxonomy, parasite ecology, host-parasite interaction studies and a list of species and their hosts. There is still a lack of information on human infections in South America with undetected or unreported infections probably due to the information shortage and little attention by physicians to these small intestinal flukes. Molecular tools for specific diagnoses of South American heterophyid species are still to be defined. Additional new sequences of Pygidiopsis macrostomum, Ascocotyle pindoramensis and Ascocotyle longa from Brazil are also provided.

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Fishborne Zoonotic Trematodes Transmitted byMelanoides tuberculataSnails, Peru

Cited by 26 publications

References 9 publications

Liver fluke infections by Amphimerus sp. (Digenea: Opisthorchiidae) in definitive and fish intermediate hosts in Manabí province, Ecuador

Liver fluke infections by Amphimerus sp. (Digenea: Opisthorchiidae) in definitive and fish intermediate hosts in Manabí province, Ecuador

Diagnosis of Centrocestus formosanus Infection in Zebrafish (Danio rerio) in Italy: A Window to a New Globalization-Derived Invasive Microorganism

Current Knowledge of Small Flukes (Digenea: Heterophyidae) from South America

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