ArticleBMC veterinary research2025
Genetic structure and evolutionary dynamics of Babesia gibsoni populations: a cytochrome oxidase subunit I (COXI) gene-based study.
Article in BMC veterinary research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Molecular prevalence and clinical profiles of canine babesiosis in northern India.BMC veterinary research · 2026Article
- Genetic diversity, population structure and haplotype analysis of Babesia gibsoni based on the thrombospondin-related adhesive protein (TRAP) gene.Scientific reports · 2026Article
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8 authors.
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Abstract
backgroundBabesia gibsoni is a tick-borne intraerythrocytic protozoan parasite causing piroplasmosis in dogs globally. A significant knowledge gap exists regarding the genetic characterization of B. gibsoni using the mitochondrial cytochrome c oxidase subunit I (COXI) gene. To address this, the current study aimed to investigate the genetic diversity and population genetics of B. gibsoni based on COXI gene sequences (≥ 649 bp) in the GenBank.
resultsPhylogenetic analysis revealed that all B. gibsoni isolates clustered into a single large monophyletic clade based on nucleotide and amino acid sequences, exhibiting high sequence similarity ranging from 98.2-100% at the nucleotide level and 99.1-100% at the amino acid level. Sequence alignment of the COXI gene identified 17 variable sites, including 13 synonymous (T66A, T162C, C177T, T240C, A423G, C426T, G474A, T477C, G486A, T489C, T516C, A531G, and T609A), and four non-synonymous (G138A, C191T, C194T, and G316A) mutations that resulted in amino acid substitutions at four places (M46I, T64I, S65F and V106I). A median-joining haplotype network constructed from the sequences revealed 10 distinct haplotypes, with six of them comprising multiple sequences (2-5 sequences each). No haplotype was shared between any two countries. The Indian population exhibited the highest nucleotide and haplotype diversities, while the Japanese population showed the lowest. Global dataset demonstrated low nucleotide (0.00767 ± 0.00076) and high haplotype (0.911 ± 0.040) diversities. Significant genetic differentiation was observed between Indian and Japanese populations (F
conclusionsThis study presents the first comprehensive genetic and population-level characterization of B. gibsoni using mitochondrial COXI gene analysis. The findings offer a valuable reference for developing more effective control strategies against canine babesiosis caused by B. gibsoni.
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