Avian haemosporidians in the cattle egret (Bubulcus ibis) from central-western and southern Africa: High diversity and prevalence

Autor: Cynthia M. Villar Couto, Moussa Séga Diop, Rafael Izbicki, Aissa Regalla, Cristiano Dosualdo Rocha, Carlos Congrains, Emmanuel Moralez-Silva, Silvia Nassif Del Lama, Shiiwua A. Manu, Dominic A. W. Henry, Graeme S. Cumming, Érika Martins Braga, Jacinta Abalaka, Alfredo Simão da Silva, Gustavo Augusto Lacorte
Jazyk: angličtina
Rok vydání: 2019
Předmět:
0301 basic medicine
Leucocytozoon
Plasmodium
Lineage (evolution)
Database and Informatics Methods
0302 clinical medicine
Plasmodium paranucleophilum
Prevalence
Medicine and Health Sciences
Egret
Protozoan Infections
Animal
Phylogeny
Data Management
Mammals
Protozoans
Multidisciplinary
biology
Ecology
Cytochrome b
Eukaryota
Phylogenetic Analysis
Ruminants
030108 mycology & parasitology
Phylogenetics
Phylogeography
Vertebrates
Medicine
Sequence Analysis
Research Article
Computer and Information Sciences
Ecological Metrics
Bioinformatics
Science
030231 tropical medicine
Zoology
Sequence Databases
Research and Analysis Methods
Host-Parasite Interactions
Birds
03 medical and health sciences
Bovines
Parasite Groups
parasitic diseases
Parasitic Diseases
Animals
Evolutionary Systematics
Bubulcus ibis
Taxonomy
Evolutionary Biology
Bird Diseases
Ecology and Environmental Sciences
Organisms
Genetic Variation
Biology and Life Sciences
Species Diversity
DNA
Protozoan
biology.organism_classification
Haemosporida
Malaria
Biological Databases
Haemoproteus
Africa
Amniotes
Parasitology
Cattle
Apicomplexa
Zdroj: PLoS ONE, Vol 14, Iss 2, p e0212425 (2019)
PLoS ONE
ISSN: 1932-6203
Popis: We described the geographic distribution of 82 haemosporidian lineages (Plasmodium, Haemoproteus, and Leucocytozoon) in the cattle egret sampled in five countries in central-western and southern Africa. Seventy-three lineages have not previously been reported. We determined the prevalence of three haemosporidians in the samples. We investigated the influence of the internal environment of the host and environmental variables on the Plasmodium diversity and whether environmental variables may explain spatial variations in the prevalence of Plasmodium. We screened DNA from 509 blood samples from nestlings in 15 African colonies for infection by sequencing the cytochrome b gene of parasites. The molecular phylogenetic analysis was performed using Bayesian methods and including sequences from the MalAvi and GeneBank databases. We found 62 new Plasmodium lineages in a clade with MYCAME02, which is a lineage described in waterbirds and recently identified in birds of prey as Plasmodium paranucleophilum. Two Haemoproteus lineages identified in cattle egret formed a distinct group with Haemoproteus catharti and MYCAMH1 (Haemoproteus spp.). Seven Leucocytozoon lineages found in the cattle egret clustered with Leucocytozoon californicus. We found different Plasmodium diversities among the colonies sampled, demonstrating that the internal environment of the host is not the primary determinant of diversity. A linear mixed-effects multivariate model showed that precipitation was positively associated with Plasmodium diversity when controlling for the effects of temperature, colony composition (mixed and non-mixed species) and country. Moreover, a generalized mixed model showed that temperature was positively associated with the prevalence of Plasmodium when controlling for precipitation, elevation and country. We conclude that the cattle egret is a good model for future haemosporidian studies, as we found a significant number of new lineages in this host, which occupies regions with different climate characteristics where environmental variables exert an influence on the diversity and prevalence of Plasmodium.
Databáze: OpenAIRE
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