Journal
PARASITOLOGY INTERNATIONAL
Volume 88, Issue -, Pages -Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.parint.2022.102562
Keywords
Fasciola gigantica; Parthenogenetic Fasciola; Philippines; Pepck; Pold; ND1
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Funding
- JSPS KAKENHI grant [17K08073]
- Grants-in-Aid for Scientific Research [17K08073] Funding Source: KAKEN
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This study revealed the coexistence of Fasciola gigantica and parthenogenetic Fasciola in the Philippines, with the former having a longer presence. The high genetic diversity of F. gigantica suggests its long-time existence in the country, while the identical ND1 haplotype of parthenogenetic Fasciola indicates its recent introduction from a neighboring continent.
Fasciola flukes collected from domestic buffalos and cattle in the Philippines were confirmed as Fasciola gigantica and parthenogenetic Fasciola based on DNA analyses of nuclear pepck and pold genes, and the mitochondrial ND1 gene. This study is the first to elucidate that F. gigantica and parthenogenetic Fasciola coexist in the Philippines with prevalences of 90.6% and 9.4%, respectively. The F. gigantica population showed a high genetic diversity with 25 ND1 haplotypes, suggesting that F. gigantica has existed in the Philippines for a long time. In contrast, parthenogenetic Fasciola flukes showed a single ND1 haplotype (Fsp-ND1-P1), which was identical to the founder haplotype, Fg-C2 of parthenogenetic Fasciola in China. These results indicate that parthenogenetic Fasciola in the Philippines is a recently introduced population from a neighboring continent.
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