A new subspecies of <i>Trypanosoma cyclops</i> found in the Australian terrestrial leech <i>Chtonobdella bilineata</i>

Ellis, John; Barratt, Joel; Kaufer, Alexa; Pearn, Lauren; Armstrong, Brigette; Johnson, Michael; Park, Yasunori; Downey, Lara; Cao, Maisie; Neill, Levina; Lee, Rogan; Ellis, Bethany; Lun, Zhao‐Rong; Stark, Damien

doi:10.1017/s0031182021000639

Cited by 9 publications

(8 citation statements)

References 59 publications

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“…A major knowledge gap persists in regard to understanding the Australian Trypanosoma life cycle(s) since the vectors have not been identified. Whilst ticks have been proposed as vectors due to the frequency in which they are found on wildlife, in addition to sporadic reports of flagellate forms within opportunistically collected fed ticks, to date there has been a scarcity of published reports detailing the screening of any potential invertebrate vector candidates for Australian trypanosomes [18][19][20]22,29,30]. This is despite the continuing discovery of new species and the revelation that many indigenous species of Trypanosoma appear to be ubiquitously distributed across the Australian continent and found in a remarkably diverse range of vertebrate hosts [6,11,15,31,32].…”

Section: Discussionmentioning

confidence: 99%

Molecular Detection of Trypanosoma spp. in Questing and Feeding Ticks (Ixodidae) Collected from an Endemic Region of South-West Australia

et al. 2021

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A growing number of indigenous trypanosomes have been reported to naturally infect a variety of Australian wildlife with some species of Trypanosoma implicated in the population decline of critically endangered marsupials. However, the mode of transmission of Australian trypanosomes is unknown since their vectors remain unidentified. Here we aimed to fill this current knowledge gap about the occurrence and identity of indigenous trypanosomes in Australian invertebrates by conducting molecular screening for the presence of Trypanosoma spp. in native ticks collected from south-west Australia. A total of 231 ticks (148 collected from vegetation and 83 retrieved directly from 76 marsupial hosts) were screened for Trypanosoma using a High-Resolution Melt (HRM) qPCR assay. An overall Trypanosoma qPCR positivity of 37% (46/125) and 34% (26/76) was detected in questing ticks and host-collected (i.e., feeding) ticks, respectively. Of these, sequencing revealed 28% (35/125) of questing and 28% (21/76) of feeding ticks were infected with one or more of the five species of trypanosome previously reported in this region (T. copemani, T. noyesi, T. vegrandis, T. gilletti, Trypanosoma sp. ANU2). This work has confirmed that Australian ticks are capable of harbouring several species of indigenous trypanosome and likely serve as their vectors.

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Section: Discussionmentioning

confidence: 99%

Molecular Detection of Trypanosoma spp. in Questing and Feeding Ticks (Ixodidae) Collected from an Endemic Region of South-West Australia

et al. 2021

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“…John Ellis and his collaborators used phylogenetic analysis to show that the clade containing T. cyclops and a newly identified trypanosome from terrestrial leeches located around Sydney, in New South Wales, are very closely related, suggesting that they may be of the same species. Indeed, the genetic similarity and biogeography analysis permitted them to describe this leech parasite as a new subspecies of T. cyclops that they named T. cyclops australiensis (Ellis et al, 2021). Importantly, this highlights the historical connection between South East Asia and Australia within the paeleosupercontinent Gondwanaland, and they hypothesise that evolution of the T. cyclops clade likely was underway before Gondwanaland broke up during the Jurassic period.…”

Section: New Species and Drug Actionmentioning

confidence: 92%

Kinetoplastid cell biology and genetics, from the 2020 British Society for Parasitology Trypanosomiasis and Leishmaniasis symposium, Granada, Spain

et al. 2021

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The British Society for Parasitology (BSP) holds a biannual symposium devoted to the Kinetoplastids, and seeks to cover the full gamut of research into these important organisms, and alternates with the Woods Hole KMCB meeting that serves a similar community. While normally embedded within the main BSP Spring meeting, on several occasions the symposium has enjoyed the opportunity of being hosted on mainland Europe. In 2020 the BSP was fortunate to spend some time in Granada in Spain, where a superb meeting with excellent science in a spectacular setting was overshadowed by news of an emerging novel coronavirus. In this editorial we hope to have captured some of that excellent science and to highlight aspects of the many great papers and reviews in this special issue, as well as provide a few images from the meeting, which we hope for this who attended will bring back some fond memories.

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“…The tree was rooted using sequences of T. cyclops downloaded from GenBank (GenBank accession no. MW872345 and MW872357; Ellis et al, 2021 ).…”

Section: Methodsmentioning

confidence: 99%

Molecular identification of Trypanosoma theileri complex in Eurasian moose Alces alces (L.)

Filip-Hutsch¹,

Świsłocka²,

Karbowiak³

et al. 2022

International Journal for Parasitology: Parasites and Wildlife

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A new subspecies of Trypanosoma cyclops found in the Australian terrestrial leech Chtonobdella bilineata

Abstract: Abstract

Cited by 9 publications

References 59 publications

Molecular Detection of Trypanosoma spp. in Questing and Feeding Ticks (Ixodidae) Collected from an Endemic Region of South-West Australia

Molecular Detection of Trypanosoma spp. in Questing and Feeding Ticks (Ixodidae) Collected from an Endemic Region of South-West Australia

Kinetoplastid cell biology and genetics, from the 2020 British Society for Parasitology Trypanosomiasis and Leishmaniasis symposium, Granada, Spain

Molecular identification of Trypanosoma theileri complex in Eurasian moose Alces alces (L.)

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