ИСТИНА

Host specificity plays an important role in host parasite coevolution. Identification of chewing louse Myrsidea claytoni in bird species from the unrelated families Pycnonotidae and Eurylaimidae (Sychra et al., 2014), a representative of a host specific genus Myrsidea, suggested a case of a host switch, which was accompanied with the high level of infestation in Cymbirhynchus macrorhynchos. To test the hypothesis and to reveal the evolutionary history of the Myrsidea and their hosts a cophylogenetic reconstruction analysis was performed. Partial sequences of EF1 and COI genes for lice and myoglobin and cyt-b genes for birds were studied by Bayesian analysis in BEASTv1.8 and TRACERv1.6 with ABGD and GMYC algorithms for OTU delimiting and by parafit and PACo statistical tests. Investigation of 34 host parasite pairs from the South East Asia showed a partial congruence between the patterns of host and parasite phylogenies. More data from another species collected will be analyzed.