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avian malaria

NOT Open Access | Dynamics of blood stage and sporozoite-induced malarial infections in experimentally infected passerines

September 8, 2020 - 11:44 -- NOT Open Access
Author(s): 
Palinauskas V, Platonova E, Žiegytė R, Mukhin A
Reference: 
Int J Parasitol. 2020 Aug 31:S0020-7519(20)30248-4

Complex experimental studies of vertebrate host, vector, and parasite interactions are essential in understanding virulence, but are difficult or impossible to conduct if vector species are unknown. Subinoculation of erythrocytic meronts of avian malarial parasites into susceptible hosts can avoid this problem, but this approach omits early exoerythrocytic stages, e.g. cryptozoites and metacryptozoites, that normally develop from sporozoites.

Physiological and morphological correlates of blood parasite infection in urban and non-urban house sparrow populations

August 22, 2020 - 14:32 -- Open Access
Author(s): 
Bichet C, Brischoux F, Ribout C, Parenteau C, Meillère A, Angelier F
Reference: 
PLoS One. 2020 Aug 19;15(8):e0237170

In the last decade, house sparrow populations have shown a general decline, especially in cities. Avian malaria has been recently suggested as one of the potential causes of this decline, and its detrimental effects could be exacerbated in urban habitats. It was initially thought that avian malaria parasites would not have large negative effects on wild birds because of their long co-evolution with their hosts.

NOT Open Access | Morphological and molecular characterization of Plasmodium cathemerium (lineage PADOM02) from the sparrow Passer domesticus with complete sporogony in Culex pipiens complex

August 3, 2020 - 16:09 -- NOT Open Access
Author(s): 
Aly MZY, Mohamed III, Sebak SI, Vanstreels RET, El Gendy AM
Reference: 
Parasitology. 2020 Aug; 147(9):985-993

Avian malaria is a mosquito-borne disease caused by Plasmodium spp. protozoa. Although these parasites have been extensively studied in North America and Eurasia, knowledge on the diversity of Plasmodium, its vectors and avian hosts in Africa is scarce. In this study, we report on natural malarial infections in free-ranging sparrows (Passer domesticus) sampled at Giza Governorate, Egypt. Parasites were morphologically characterized as Plasmodium cathemerium based on the examination of thin blood smears from the avian host.

An urge to fill a knowledge void: Malaria parasites are rarely investigated in threatened species

July 6, 2020 - 16:48 -- Open Access
Author(s): 
Carmona-Isunza MC, Ancona S, Figuerola J, Gonzalez-Voyer A, Martínez de la Puente J
Reference: 
PLoS Pathog. 2020 Jul 2;16(7):e1008626

There is an increasing urgency in gaining greater understanding of the factors that affect vulnerability to extinction, given the current levels of species loss. Parasites often reduce host fitness and can thus exert an important influence on host population dynamics, exacerbating vulnerability to extinction. However, empirical support for the hypothesis that parasites can increase vulnerability to extinction is rare.

NOT Open Access | First report of avian malaria in a Manx shearwater (Puffinus puffinus)

June 1, 2020 - 16:10 -- NOT Open Access
Author(s): 
Vanstreels RET, de Angeli Dutra D, Santos AP, Hurtado R, Egert L, Braga ÉM
Reference: 
Parasitol Int. 2020 May 25:102148

This study reports the case of a Manx shearwater (Puffinus puffinus) that died from avian malaria while under care at a rehabilitation center in Espírito Santo, Brazil. The bird was rescued on October 2018, and remained under care until it died suddenly on January 2019. A blood smear produced 8 days before death was negative for parasites, whereas a blood smear produced post-mortem revealed a high parasitemia by a parasite resembling Plasmodium cathemerium.

NOT Open Access | Evolutionary ecology, taxonomy, and systematics of avian malaria and related parasites

April 6, 2020 - 14:40 -- NOT Open Access
Author(s): 
Fecchio A, Chagas CRF, Bell JA, Kirchgatter K
Reference: 
Acta Tropica, Volume 204, April 2020, 105364

Haemosporidian parasites of the genera Plasmodium, Leucocytozoon, and Haemoproteus are one of the most prevalent and widely studied groups of parasites infecting birds. Plasmodium is the most well-known haemosporidian as the avian parasite Plasmodium relictum was the original transmission model for human malaria and was also responsible for catastrophic effects on native avifauna when introduced to Hawaii.

Not Open Access | The role of native and introduced birds in transmission of avian malaria in Hawai'i

March 9, 2020 - 15:12 -- NOT Open Access
Author(s): 
McClure KM, Fleischer RC, Kilpatrick AM
Reference: 
Ecology. 2020 Mar 4:e03038

The introduction of non‐native species and reductions in native biodiversity have resulted in substantial changes in vector and host communities globally, but the consequences for pathogen transmission are poorly understood. In lowland Hawaiʻi, bird communities are composed of primarily introduced species, with scattered populations of abundant native species. We examined the influence of avian host community composition—specifically the role of native and introduced species, as well as host diversity, on the prevalence of avian malaria (Plasmodium relictum) in the southern house mosquito (Culex quinquefasciatus).

NOT Open Access | Epidemiology, hematology, and unusual morphological characteristics of Plasmodium during an avian malaria outbreak in penguins in Brazil

December 3, 2019 - 15:47 -- NOT Open Access
Author(s): 
Ralph Eric Thijl Vanstreels, Daniela de Angeli Dutra, Francisco C. Ferreira-Junior, Renata Hurtado, Leandro Egert, Luis Felipe S. P. Mayorga, Renata C. C. Bhering, Érika M. Braga & José Luiz Catão-Dias
Reference: 
Parasitology Research December 2019, Volume 118, Issue 12, pp 3497–3508

Avian malaria is a mosquito-borne disease caused by Plasmodium spp. protozoa, and penguins are considered particularly susceptible to this disease, developing rapid outbreaks with potentially high mortality. We report on an outbreak of avian malaria in Magellanic penguins (Spheniscus magellanicus) at a rehabilitation center in Espírito Santo, southeast Brazil. In August and September 2015, a total of 89 Magellanic penguins (87 juveniles and 2 adults) received care at Institute of Research and Rehabilitation of Marine Animals.

Avian malaria alters the dynamics of blood feeding in Culex pipiens mosquitoes

March 20, 2019 - 15:43 -- Open Access
Author(s): 
Stéphane Cornet, Antoine Nicot, Ana Rivero and Sylvain Gandon
Reference: 
Malaria Journal 2019 18:82, 15 March 2019

The potential adaptive nature of this manipulation of mosquito behaviour is discussed in the light of previous studies on other malaria models.

NOT Open Access | Pathological and molecular characterization of avian malaria in captive Magellanic penguins (Spheniscus magellanicus) in South America

February 6, 2019 - 15:39 -- NOT Open Access
Author(s): 
Paula Augusto Taunde, Matheus Viezzer Bianchi, Lívia Perles, Fernando Soares da Silva, Tainã Normanton Guim, Renan Alves Stadler, Marcos Rogério André, David Driemeier & Saulo Petinatti Pavarini
Reference: 
Parasitology Research February 2019, Volume 118, Issue 2, pp 599–606

Avian malaria is a mosquito-borne disease that affects multiple avian species and is caused by protozoans of the genus Plasmodium.

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