Evidence map›Paper›PMID 30654841›Full record

ArticleParasites & vectors2019

Haemoproteus minutus is highly virulent for Australasian and South American parrots.

Luis Ortiz-Catedral, Dianne Brunton, Mark F Stidworthy, Hany M Elsheikha, Tom Pennycott, Christoph Schulze, Michael Braun, Michael Wink, Helga Gerlach, Helene Pendl and 5 more

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
8.7field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

54 citing papers in PubMed, 95 citations in OpenAlex.

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  8. Novel Insight intoPathogens (Basel, Switzerland) · 2025
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  9. Review
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  14. Unexpected absence of exo-erythrocytic merogony during high gametocytaemia in two species ofInternational journal for parasitology. Parasites and wildlife · 2024
    Article
  15. Article
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  17. Exo-erythrocytic development ofInternational journal for parasitology. Parasites and wildlife · 2023
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  18. Parasitology · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors at 10 institutions in 6 countries.

Luis Ortiz-CatedralMassey University, Institute of Natural and Mathematical Sciences, Massey University, Private Bag 102904, North Shore Mail Centre, Auckland, 0745, New Zealand.
Dianne BruntonMassey University, Institute of Natural and Mathematical Sciences, Massey University, Private Bag 102904, North Shore Mail Centre, Auckland, 0745, New Zealand.
Mark F StidworthyInternational Zoo Veterinary Group, Station House, Parkwood Street, Keighley, BD21 4NQ, UK.
Hany M ElsheikhaUniversity of Nottingham, School of Veterinary Medicine and Science, Sutton Bonington Campus, Sutton Bonington, Leicestershire, LE12 5RD, UK.
Tom PennycottAyr Disease Surveillance Centre, Auchincruive, Ayr, KA6 5AE, UK.
Christoph SchulzeBerlin-Brandenburg State Laboratory, Gerhard-Neumann-Str. 2, 15236, Frankfurt (Oder), Germany.
Michael BraunHeidelberg University, Institute of Pharmacy and Molecular Biotechnology, Im Neuenheimer Feld 364, 69120, Heidelberg, Germany.
Michael WinkHeidelberg University, Institute of Pharmacy and Molecular Biotechnology, Im Neuenheimer Feld 364, 69120, Heidelberg, Germany.
Helga GerlachGerlach Laboratory, Grosshessloher Strasse 23, 81479, Munich, Germany.
Helene PendlPendl Laboratory, Untere Roostmatt 7, 6300, Zug, Switzerland.
Achim D GruberFreie Universität Berlin, Institute of Veterinary Pathology, Robert-von-Ostertag-Str. 15, 14163, Berlin, Germany.
John EwenZoological Society of London, Institute of Zoology, Regent's Park, London, NW1 4RY, UK.
Javier Pérez-TrisDepartamento de Biodiversidad, Ecología y Evolución, Facultad de Biología (Planta 9), Complutense University of Madrid, C/ José Antonio Novais, 2. Ciudad Universitaria, 28040, Madrid, Spain.
Gediminas ValkiūnasInstitute of Ecology, Nature Research Centre, Akademijos str. 2, 08412, Vilnius, Lithuania.
Philipp OliasUniversity of Bern, Institute of Animal Pathology, Länggassstrasse 122, 3063, Bern, Switzerland. philipp.olias@vetsuisse.unibe.ch.ORCID http://orcid.org/0000-0002-7200-2414
Heidelberg University · DEMassey University · NZFreie Universität Berlin · DENature Research Centre · LTUniversidad Complutense de Madrid · ESUniversity Hospital Ayr · GBUniversity of Bern · CHUniversity of Nottingham · GBWildlife Vets International · GBZoological Society of London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHaemoproteus and Plasmodium species are widespread avian blood parasites. Several Plasmodium species are known for their high virulence and have caused significant declines in naïve bird populations. The impact of closely related Haemoproteus parasites is largely unknown. Recently we reported a lethal disease in two parrot aviaries caused by Haemoproteus parasites.

resultsHere we show that the causative pathogen Haemoproteus minutus is responsible for further 17 lethal outbreaks in parrot aviaries in Denmark, Germany and Great Britain. All affected parrots are endemic to Australasia and South America. We sequenced the cytochrome b gene from megalomeront-infected muscle tissue of 21 parrots and identified the two lineages TUPHI01 and TURDUS2 as causative agents, commonly naturally infecting the common blackbird (Turdus merula) and the song thrush (Turdus philomelos), respectively, in the Palaearctic. No intraerythrocytic parasite stages were found in any of the parrots. We failed to detect H. minutus in invasive Indian ring-necked parakeets (Psittacula krameri) in Germany. Together this suggests that abortive infections with two virulent lineages of H. minutus are lethal for naïve parrot species from Australasia and South America. We asked whether we could detect H. minutus in New Zealand, where its Turdus hosts were introduced in the 1800s. We therefore tested invasive blackbirds and song thrushes, and the co-existing endemic red-fronted parakeet (Cyanoramphus novaezelandiae) population on three New Zealand islands. No Haemoproteus spp. DNA was detected in all blood samples, indicating absence of transmission.

conclusionsThe results of this study show that captive parrots in Europe are threatened by two lineages of an otherwise benign parasite of Turdus spp. Aviary collections of parrots should be protected from Culicoides spp. vectors in Europe. Animal trade and climate changes extending the current vector and parasite distribution have to be considered as potential risk factors for the introduction of the disease in naïve parrot populations.

Indexed as

AnimalsAustralasiaBird DiseasesCytochromes bEuropeHaemosporidaMusclesParrotsPhylogenyProtozoan Infections, AnimalProtozoan ProteinsSequence Analysis, DNASongbirdsSouth AmericaCytochromes bProtozoan ProteinsApicomplexaConservationHaemoproteusHaemosporidaMalariaParrotPlasmodiumPsittaciformes

Identifiers

PMID30654841
PMCPMC6337802
OpenAlexW2917974146

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.