Hemolivia and Hepatozoon: Haemogregarines with Tangled Evolutionary Relationships

0436597 - BC 2015 RIV DE eng J - Journal Article
Kvičerová, Jana - Hypša, Václav - Dvořáková, N. - Mikulíček, P. - Jandzik, D. - Gardner, M. G. - Javanbakht, H. - Tiar, G. - Široký, P.
Hemolivia and Hepatozoon: Haemogregarines with Tangled Evolutionary Relationships.
Protist. Roč. 165, č. 5 (2014), s. 688-700. ISSN 1434-4610. E-ISSN 1618-0941
R&D Projects: GA ČR(CZ) GAP506/11/1738
Institutional support: RVO:60077344
Keywords : Apicomplexa * haemogregarines * Hemolivia * Hepatozoon * host specificity * phylogeny
Subject RIV: EG - Zoology
Impact factor: 3.045, year: 2014

The generic name Hemolivia has been used for haemogregarines characterized by morphological and biological features. The few molecular studies, focused on other haemogregarine genera but involving Hemolivia samples, indicated its close relationship to the genus Hepatozoon. Here we analyze molecular data for Hemolivia from a broad geographic area and host spectrum and provide detailed morphological documentation of the included samples. Based on molecular analyses in context of other haemogregarines, we demonstrate that several sequences deposited in GenBank from isolates described as Hepatozoon belong to the Hemolivia cluster. This illustrates the overall difficulty with recognizing Hemolivia and Hepatozoon without sufficient morphological and molecular information. The close proximity of both genera is also reflected in uncertainty about their precise phylogeny when using 18S rDNA. They cluster with almost identical likelihood either as two sister taxa or as monophyletic Hemolivia within paraphyletic Hepatozoon. However, regardless of these difficulties, the results presented here provide a reliable background for the unequivocal placement of new samples into the Hemolivia/Hepatozoon complex.
Permanent Link: http://hdl.handle.net/11104/0240307