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Molecular characterisation of three avian haemoproteids (Haemosporida, Haemoproteidae), with the description of Haemoproteus (Parahaemoproteus) palloris n. sp.

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Abstract

DNA barcoding (molecular characterisation) is a useful tool for describing the taxonomy and systematics of organisms. Over 250 species of avian haemosporidian parasites have been described using morphological characters, yet molecular techniques based on polymerase chain reaction (PCR) suggest this diversity is underestimated. Moreover, molecular techniques are particularly useful for the detection of chronic infections and tissue stages of these parasites. Species delimitation is problematic among haemosporidians, and many questions about the mechanisms and patterns of speciation, host specificity and pathogenicity are still unresolved. Accumulation of additional genetic and morphological information is needed to approach these questions. Here, we combine microscopic examination with PCR-based methods to develop molecular characterisation of Haemoproteus (Parahaemoproteus) manwelli Bennett, 1978 and Haemoproteus (Parahaemoproteus) gavrilovi Valkiūnas & Iezhova, 1990, both of which parasitise the bee-eater Merops apiaster L. We also describe a new species, Haemoproteus (Parahaemoproteus) palloris n. sp., from the blood of the willow warbler Phylloscopus trochilus (L.). We performed phylogenetic analyses with a set of mitochondrial cytochrome b (cyt b) gene lineages, which have been linked to parasite morphospecies and are available in the MalAvi database. Our findings show that morphological characters, which have been traditionally used in the description of haemosporidians, exhibit phylogenetic congruence. This study contributes to a better understanding of avian haemosporidian diversity and provides new molecular markers (cyt b and apicoplast gene sequences) for the diagnostics of inadequately investigated haemosporidian infections.

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Acknowledgements

We are grateful to Karina Ivanova for her help during microscopic examination of material and to Strahil Peev, Konstantin Valchev, Stefan Braianavsci and Iovelina Bedeva for their help in the field work. This is report number 59 for Kalimok field station.

Funding

This study was supported by the European Union Structural Funds project “Postdoctoral Fellowship Implementation in Lithuania” (VP-3.1-ŠMM-01-V-02-004) and the postdoctoral project grant DO02-277 to MI from the Bulgarian Science Fund.

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Correspondence to Dimitar Dimitrov.

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All applicable institutional, national and international guidelines for the care and use of animals were followed. The research was conducted under permissions 213/26.06.2009 and 433/07.03.2012 issued from the Ministry of Evironment and Waters of Bulgaria.

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Dimitrov, D., Iezhova, T.A., Zehtindjiev, P. et al. Molecular characterisation of three avian haemoproteids (Haemosporida, Haemoproteidae), with the description of Haemoproteus (Parahaemoproteus) palloris n. sp.. Syst Parasitol 93, 431–449 (2016). https://doi.org/10.1007/s11230-016-9638-8

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