<abstract xmlns="http://www.w3.org/1999/xhtml"><p><italic>Toxocara canis</italic> of dogs and <italic>Toxocara vitulorum</italic> of cattle and buffalo are nematode parasites that cause serious economic and public health problems all over the world. This study aims to provide molecular data to identify and distinguish between <italic>Toxocara</italic> spp. from dogs, cattle and buffalo in Egypt. Moreover, constructing a phylogeny and phylogenetic relationships among these <italic>Toxocara</italic> spp. were performed through an analytic study of ATPase-6, a mitochondrial gene; 12S, small subunit ribosomal RNA gene and ITS-2, the second internal transcribed spacer nuclear ribosomal gene. <italic>T. vitulorum</italic> from cattle and buffalo were found to be almost identical. The ATPase- 6 and 12S regions showed 87.78 % and 90.38 % nucleotide similarity between <italic>T. canis</italic> and <italic>T. vitulorum</italic>, while for the ITS-2 region, only 78.38 % was found. Analysis of the three studied genes revealed that each <italic>Toxocara</italic> spp. has distinct molecular characteristics. Moreover, it was revealed that these genes, especially the ITS-2 gene, are useful and sensitive molecular markers for classifying and studying the phylogenetic analysis and relationships among closely related <italic>Toxocara</italic> spp. All sequences obtained in this study were registered in the GenBank under the accession numbers: MG214149 -MG214157.</p></abstract>

Toxocara canis of dogs and Toxocara vitulorum of cattle and buffalo are nematode parasites that cause serious economic and public health problems all over the world. This study aims to provide molecular data to identify and distinguish between Toxocara spp. from dogs, cattle and buffalo in Egypt. Moreover, constructing a phylogeny and phylogenetic relationships among these Toxocara spp. were performed through an analytic study of ATPase-6, a mitochondrial gene; 12S, small subunit ribosomal RNA gene and ITS-2, the second internal transcribed spacer nuclear ribosomal gene. T. vitulorum from cattle and buffalo were found to be almost identical. The ATPase- 6 and 12S regions showed 87.78 % and 90.38 % nucleotide similarity between T. canis and T. vitulorum, while for the ITS-2 region, only 78.38 % was found. Analysis of the three studied genes revealed that each Toxocara spp. has distinct molecular characteristics. Moreover, it was revealed that these genes, especially the ITS-2 gene, are useful and sensitive molecular markers for classifying and studying the phylogenetic analysis and relationships among closely related Toxocara spp. All sequences obtained in this study were registered in the GenBank under the accession numbers: MG214149 -MG214157.

Molecular characterization and phylogenetic analysis of <italic>Toxocara</italic> species in dogs, cattle and buffalo in Egypt

Helminthologia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Molecular characterization and phylogenetic analysis of  species in dogs, cattle and buffalo in Egypt

Toxocara canis of dogs and Toxocara vitulorum of cattle and buffalo are nematode parasites that cause serious economic and public health problems all over the...

Molecular characterization and phylogenetic analysis of Toxocara species in dogs, cattle and buffalo in Egypt

Publié en ligne: 23 mai 2020

Pages: 83 - 90

Reçu: 20 mai 2019

Accepté: 21 déc. 2019

DOI: https://doi.org/10.2478/helm-2020-0013

Mots clés
molecular characterization, PCR-mitochondrial gene- ribosomal gene, dogs, cattle, buffalo, Egypt

© 2020 O. A. Mahdy, W. M. Mousa, S. Z. Abdel-Maogood, S. M. Nader, S. Abdel-Radi, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Molecular characterization and phylogenetic analysis of Toxocara species in dogs, cattle and buffalo in Egypt

Publié en ligne: 23 mai 2020

Pages: 83 - 90

Reçu: 20 mai 2019

Accepté: 21 déc. 2019

DOI: https://doi.org/10.2478/helm-2020-0013

Mots clésmolecular characterization, PCR-mitochondrial gene- ribosomal gene, dogs, cattle, buffalo, Egypt

© 2020 O. A. Mahdy, W. M. Mousa, S. Z. Abdel-Maogood, S. M. Nader, S. Abdel-Radi, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
molecular characterization, PCR-mitochondrial gene- ribosomal gene, dogs, cattle, buffalo, Egypt