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In the Dawn of an Early Invasion: No Genetic Diversity of Angiostrongylus cantonensis in Ecuador?

The nematode has been reported worldwide. However, some basic questions remain unanswered about . in Ecuador: (1) Was the invasion of . in Ecuador unique, or did it occur in different waves? (2) Was this invasion as recent as historical records suggest? (3) Did this invasion come from other regions...

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Published in:Pathogens (Basel) 2023-06, Vol.12 (7), p.878
Main Authors: Solórzano Álava, Luis, Bedoya Pilozo, Cesar, Hernandez Alvarez, Hilda, Rojas Rivera, Lazara, Rodriguez Ortega, Misladys, Fraga Nodarse, Jorge, Pereira, Leandro de Mattos, Simões, Raquel de Oliveira, Vilela, Roberto do Val
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container_title Pathogens (Basel)
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creator Solórzano Álava, Luis
Bedoya Pilozo, Cesar
Hernandez Alvarez, Hilda
Rojas Rivera, Lazara
Rodriguez Ortega, Misladys
Fraga Nodarse, Jorge
Pereira, Leandro de Mattos
Simões, Raquel de Oliveira
Vilela, Roberto do Val
description The nematode has been reported worldwide. However, some basic questions remain unanswered about . in Ecuador: (1) Was the invasion of . in Ecuador unique, or did it occur in different waves? (2) Was this invasion as recent as historical records suggest? (3) Did this invasion come from other regions of South America or elsewhere? To address these issues, we assessed the genetic diversity of MT-CO1 gene sequences from isolates obtained in 11 of Ecuador's 24 provinces. Our Bayesian inference phylogenetic tree recovered . as a well-supported monophyletic group. All 11 sequences from Ecuador were identical and identified as AC17a. The haplotype AC17a, found in Ecuador and the USA, formed a cluster with AC17b (USA), AC13 (Thailand), and AC12a-b (Cambodia). Notably, all the samples obtained in Ecuadorian provinces' different geographic and climatic regions had no genetic difference. Despite the lack of genetic information on . in Latin America, except in Brazil, our finding differs from previous studies by its absence of gene diversity in Ecuador. We concluded that the invasion of . in Ecuador may have occurred: (1) as a one-time event, (2) recently, and (3) from Asia via the USA. Further research should include samples from countries neighboring Ecuador to delve deeper into this.
doi_str_mv 10.3390/pathogens12070878
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source Publicly Available Content Database; PubMed Central
subjects Angiostrongylus cantonensis
Bayesian analysis
Cytochrome
cytochrome c oxidase subunit I
eosinophilic meningoencephalitis
Gene sequencing
Genetic diversity
Genetic testing
Haplotypes
Invasive species
Invoices
Laboratory animals
Nematodes
Parasites
Phylogenetics
Phylogeny
Phylogeography
Provinces
Pulmonary arteries
Statistical inference
Thermal cycling
title In the Dawn of an Early Invasion: No Genetic Diversity of Angiostrongylus cantonensis in Ecuador?
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