Haemogregarines and Criteria for Identification
Saleh Al-Quraishy1, Fathy Abdel-Ghaffar2, Mohamed A Dkhil1,3
1Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
Animals : an Open Access Journal From MDPI
|January 15, 2021
Summary
Haemogregarines are complex apicomplexan parasites infecting diverse vertebrates. Their classification and ultrastructure require further study using molecular methods like 18S rRNA gene sequencing.
Area of Science:
- Parasitology
- Protozoology
- Molecular Biology
Background:
- Apicomplexa encompasses parasitic protozoa with distinct ultrastructural traits.
- Haemogregarines are sophisticated apicomplexan blood parasites with complex life cycles.
- These parasites infect a wide range of vertebrate hosts, including fish, reptiles, birds, and mammals.
Purpose of the Study:
- To explore the classification and ultrastructure of haemogregarines.
- To highlight the importance of molecular techniques for parasite characterization.
- To establish criteria for the generic and unique diagnosis of haemogregarine parasites.
Main Methods:
- Examination of haemogregarine ultrastructure from vertebrate host stages.
- Application of Polymerase Chain Reaction (PCR)-based assays.
- Sequencing of the 18S ribosomal RNA (rRNA) gene for phylogenetic analysis.
Main Results:
- Ultrastructural data has primarily focused on vertebrate host stages.
- PCR and 18S rRNA gene sequencing offer valuable tools for characterization.
- The study provides a framework for classifying the haemogregarine complex.
Conclusions:
- Further research into haemogregarine ultrastructure and molecular phylogeny is warranted.
- Standardized diagnostic criteria are essential for accurate haemogregarine classification.
- Molecular methods significantly advance the understanding of apicomplexan parasite diversity.
