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Table 1 Morphological features and localization within the host organism for some Herpetomonas and Leptomonas species

From: Free-living ciliates as potential reservoirs for eukaryotic parasites: occurrence of a trypanosomatid in the macronucleus of Euplotes encysticus

Feature Herpetomonas sp. Ind3 H. ztiplika a H. trimorpha a Leptomonas sp. L. ciliatorum
Host species Euplotes encysticus Culicoides kibunensis, Culicoides truncorum Culicoides truncorum Euplotes sp. Paraholosticha sterkii
Location Mainly macronucleus Hindgut and Malpighian tubules Malpighian tubules Only macronucleus Only macronucleus
Cell length 4.0 ± 0.2 8.9 ± 0.4 8.2 ± 0.3 5 6-8
Cell width 1.3 ± 0.7 2.1 ± 0.1 2.7 ± 1.2 1.7 2-3
Flagellum length 10.2 ± 0.8 10.7 ± 1.1 10.2 ± 2.3 12 10-14
Kinetoplast width 0.30 ± 0.05 0.16 ± 0.07b 0.125 ± 0.025b 0.18 + 0.0c 0.4c
Kinetoplast position Closer to posterior end Closer to anterior endb Anterior end (mic p, l p)b; central (s p)b; Not reported Nearly central
Nucleus position Closer to posterior end Nearly centralb Anterior end (mic p)b; central (s p, l p)c; Not reported Close to posterior
Kinetoplast/nucleus position Close each other With some distanceb Close (mic p, s p)b; distant (l p)b; Close each other Close each other
Posterior end shape Rounded Fine pointedb Pointed (mic p)b Rounded Slightly conical
References Present study [8, 13] [9] [21] [22]
  1. All measurements given in μm; adata referred to Herpetomonas spp. harboured by insect hosts; bdata only available from cells in culture medium; cdata inferred from published figures; microflagellate (mic), small (s) and long (l) promastigote (p).