Trypanosoma subgen. Nannomonas

Description: English: Trypanosoma congolense. Time course of development of Trypanosoma congolense 1/148 YPFR in vitro. Trypanosomes were imaged from time zero (T = 0) to 48 hours (T = 48) after seeding cultures from pooled proventricular forms. Each image, except T = 0, represents trypanosomes attached to the coverslip, as free-swimming cells were washed away. Brightfield image merged with the DAPI image (recoloured cyan for clarity). The kinetoplast is indicated by an arrowhead in each trypanosome at T = 0 and is easy to identify in all trypanosomes shown up to T = 20; in the dividing trypanosomes at T = 24 to T = 48, the kinetoplast is often juxtanuclear in the daughter cell and therefore indistinct. Scale bar = 10 μm. https://doi.org/10.1371/journal.ppat.1007043.g002. PLOS Pathogens DO - 10.1371/journal.ppat.1007043. Date: 17 May 2018. Source: https://www.researchgate.net/figure/Time-course-of-development-of-Trypanosoma-congolense-1-148-YPFR-in-vitro-Trypanosomes_fig2_325211631. Author: Peacock, Lori, Kay, Christopher, Bailey, Mick, Gibson, Wendy.

Description: English: Trypanosoma congolense. Sequence of events in formation of first and second daughter cells. Cultured proventricular forms of T. congolense 1/148 YPFR. (A) Cell prior to division, 1K1N; (B) elongated kinetoplast, 1K1N; (C, D) enlarged kinetoplast and growth of new flagellum, 1K1N; (E) nuclear division, 2K1N; (F, G) formation of cleavage furrow, 2K2N; (H) mother cell with attached daughter; enlarged kinetoplast and new flagellum indicate that mother cell is dividing again; (I) rosette of three cells. White arrows indicate YFP::PFR1 depot; black arrowheads indicate daughter cells. Rows top to bottom: brightfield, DAPI, merge, YFP, merge. Scale bar = 5 μm. https://doi.org/10.1371/journal.ppat.1007043.g008. Date: 17 May 2018. Source: https://www.researchgate.net/figure/Sequence-of-events-in-formation-of-first-and-second-daughter-cells-Cultured_fig5_325211631. Author: Peacock, Lori, Kay, Christopher, Bailey, Mick, Gibson, Wendy.

Description: English: Trypanosoma congolense. First cell division of proventricular forms of T. congolense. Cultured proventricular forms from three different strains of T. congolense: WG81 (A), Gam2 (B), S104 (C). Rows top to bottom: brightfield, DAPI, merge. The white arrowheads indicate the kinetoplast; where the kinetoplast of the daughter cell is not indicated, it is presumably juxtanuclear and therefore hidden (columns 2 and 4). In column 2, the kinetoplast of the mother cell is elongated, indicating that a further round of cell replication has begun. Scale bar = 5 μm. Date: 17 May 2018. Source: https://www.researchgate.net/figure/First-cell-division-of-proventricular-forms-of-T-congolense-Cultured-proventricular_fig4_325211631. Author: Peacock, Lori, Kay, Christopher, Bailey, Mick, Gibson, Wendy.

Trypanosoma Gruby, 1843. Digenetic trypanosomatids (two hosts) with a trypomastigote form in the blood of the vertebrate host, a promastigote or choanomastigote form in the vector insect and an amastigote form inside macrophages and tissues of the vertebrate host. The cell of the trypomastigote form has one flagellum adherent to the entire length of the cell body. A kinetoplast is situated at the base of the insertion of the flagellum and the nucleus is posterior or median. The epimastigote form has one apical flagellum with a kinetoplast at its base and a central nucleus. Salivarian trypanosomes occur in the blood of vertebrates and are transmitted by an haematophagous insect such as the tsetse Glossina fly in African trypanosomiasis; salivarian trypanosomes are transmitted by contamination by the feces of the insect vector such as the Rhodnius bug in American trypanosomiasis or Chagas disease. This image of Trypanosoma congolense, trypomastigote form in blood of humans (Giemsa staining).