Pycnonotus simplex, Lesson, 1839

Paperna, Ilan, Keong, Malcolm Soh Chu & May, Charlotte Yap Aye, 2008, Haemosporozoan Parasites Found In Birds In Peninsular Malaysia, Singapore, Sarawak And Java, Raffles Bulletin of Zoology 56 (2), pp. 211-243 : 232

Pycnonotus simplex

Locality. – Indonesia: Java, Lingo lowland secondary forest, Apr.2001 and 2002 .

Type host. – Pycnonotus jocosus ( Malim , India) .

Remarks on Haemoproteu s spp. of Pycnonotidae . – We are certain of the identity of H. sanguinis in all the examined Pycnonotidae , but we are not certain about the identity of Hae. otocompsae . Both occur in the same individual host, but Hae. sanguinis outnumbers the presumed Hae. otocompsae in all examined hosts. At times, differentiation between Hae. otocompsae and Hae. sanguinis is difficult. The few microgametocytes presumably of Hae. otocompsae seen in the Javan material occupy three-quarters or more of the erythrocyte (robust) while grossly displacing the erythrocyte nucleus (NDR 0.47; in Rahal et al. (1987) description NDR = 0.55). In the Malaysian material, they cause swelling of the erythrocyte without displacing its nuclei. The microgametocytes of many Haemoproteus spp. , however, with aging, turn robust, and displace the host-cell nucleus. Differentiation between macrogametocytes of both species (both relatively slender) based on the degree of erythrocyte nuclear displacement (0.72 ± 0.09 vs. 0.82 ± 0.17 for Hae. otocompsae and Hae. sanguinis , respectively) is even more ambiguous. In conclusion, we have doubts as to the validity of the differences and may justify the synonymy proposed by Peirce (1984).

Leucocytozoon pycnonoti Bennett, Earle & Peirce 1992 ( Fig. 17 )

Figures

Fig. 17. Leucocytozoon pycnonoti from Alophoixius bres, Malaysia (from left: two microgametes and a macrogametocyte).