期刊
INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE
卷 9, 期 -, 页码 248-257出版社
ELSEVIER
DOI: 10.1016/j.ijppaw.2019.06.002
关键词
Avian malaria; Haemosporidian parasites; Haemoproteus; PCR; Plasmodium; Strigiformes
资金
- Faculty of Veterinary Medicine, the Center for Advanced Studies in Agriculture and Food (CASAF), the Kasetsart University Research and Development Institute, Thailand [55.61]
- Research Council of Lithuania, Lithuania [DOTSUT-137-09.3.3-LMT-K-712-02-0004]
Owls are nocturnal raptors that are prevalently infected with haemosporidian parasites wordwide. These birds were commonly submitted to the Kasetsart University Raptor Rehabilitation Unit, Kasetsart University, Thailand and were examined using PCR-based methods for the presence of haemosporidian infections of by the genera Plasmodium and Haemoproteus. Blood samples from 167 individual owls belonging to 12 species common in Thailand were collected between September 2012 and February 2018. The overall prevalence of haemosporidians was 34.1%, with Haemoproteus infections (25.1%) being more prevalent than Plasmodium infections (9.0%). The prevalence of both Haemoproteus and Plasmodium parasites was similar in all seasons of the year. Molecular characterization revealed 17 new haemosporidian parasite lineages (11 Haemoproteus and six Plasmodium), with genetic variation among partial cytochrome b sequences ranging from 0.0% to 3.6% in Haemoproteus lineages and 0.2%-8.8% in Plasmodium lineages. Phylogenetic analysis showed that all Haemoproteus lineages detected in owls appeared in one well-supported Glade together with other parasites belonging to the Parahaemoproteus subgenus, indicating their close evolutionary relationship and common transmission modality by Culicoides biting midges. This study showes the existence of prominent non-described haemosporidian parasite diversity in Thai owls and provides baseline molecular information for further research on the genetic diversity of owl haemosporidian parasites. New DNA sequence information can be used for the diagnosis of owl infections, which have been often reported during rehabilitation planning.
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