Life cycle of Blastocrithidia papi sp n. (Kinetoplastea, Trypanosomatidae) in Pyrrhocoris apterus (Hemiptera, Pyrrhocoridae)

0507421 - BC 2020 RIV DE eng J - Journal Article
Frolov, A. O. - Malysheva, M. N. - Ganyukova, A.I. - Yurchenko, Vyacheslav - Kostygov, A. Y.
Life cycle of Blastocrithidia papi sp n. (Kinetoplastea, Trypanosomatidae) in Pyrrhocoris apterus (Hemiptera, Pyrrhocoridae).
European Journal of Protistology. Roč. 57, FEB 2017 (2017), s. 85-98. ISSN 0932-4739. E-ISSN 1618-0429
Institutional support: RVO:60077344
Keywords : insect trypanosomatids * triatoma-infestans * costa-rica * monoxenous trypanosomatids * host-specificity * heteroptera * leptomonas * parasites * cultivation * diversity * Cyst-forming trypanosomatids * Firebugs * Parasites * Transmission * Ultrastructure
OECD category: Microbiology
Impact factor: 2.430, year: 2017
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0932473916301249?via%3Dihub

Blastocrithidia papi sp. n. is a cyst-forming trypanosomatid parasitizing firebugs (Pyrrhocoris apterus). It is a member of the Blastocrithidia Glade and a very close relative of B. largi, to which it is almost identical through its SSU rRNA gene sequence. However, considering the SL RNA gene these two species represent quite distinct, not even related typing units. Morphological analysis of the new species revealed peculiar or even unique features, which may be useful for future taxonomic revision of the genus Blastocrithidia. These include a breach in the microtubular corset of rostrum at the site of contact with the flagellum, absence of desmosomes between flagellum and rostrum, large transparent vacuole near the flagellar pocket, and multiple vacuoles with fibrous content in the posterior portion of the cell. The Study of the flagellates' behavior in the host intestine revealed that they may attach both to microvilli of enterocytes using swollen flagellar tip and to extracellular membranes layers using hemidesmosomes of flagellum. Laboratory experiments on B. papi transmission in P. apterus demonstrated that the parasite may be transmitted vertically (via contaminated surface of eggs) and horizontally (via contaminated substrate and/or necrophagy). We argue that the parasite exploits transmission mechanisms intended for obligate bacterial symbionts of P. apterus. (C) 2016 Elsevier GmbH. All rights reserved.
Permanent Link: http://hdl.handle.net/11104/0298413