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avian malaria

Low MSP-1 haplotype diversity in the West Palearctic population of the avian malaria parasite Plasmodium relictum

June 16, 2021 - 13:06 -- Open Access
Olof Hellgren, Victor Kelbskopf, Vincenzo A. Ellis, Arif Ciloglu, Mélanie Duc, Xi Huang, Ricardo J. Lopes, Vanessa A. Mata, Sargis A. Aghayan, Abdullah Inci and Sergei V. Drovetski
Malaria Journal 2021 20:265, 12 June 2021

Although avian Plasmodium species are widespread and common across the globe, limited data exist on how genetically variable their populations are. Here, the hypothesis that the avian blood parasite Plasmodium relictum exhibits very low genetic diversity in its Western Palearctic transmission area (from Morocco to Sweden in the north and Transcaucasia in the east) was tested.

Shifts in Gene Expression Variability in the blood-stage of Plasmodium relictum

May 26, 2021 - 14:43 -- Open Access
Kalbskopf V, Ahrén D, Valkiūnas G, Palinauskas V, Hellgren O
Gene. 2021 May 18:145723

Avian malaria is a common and widespread disease of birds caused by a diverse group of pathogens of the genera Plasmodium. We investigated the transcriptomal profiles of one of the most common species, Plasmodium relictum, lineage SGS1, at multiple timepoints during the blood stages of the infection under experimental settings.

Avian malaria affecting penguins in zoological gardens, aquariums and wildlife parks in the UK

May 25, 2021 - 15:15 -- Open Access
Hernandez-Colina A, Gonzalez-Olvera M, Eckley L, Lopez J, Baylis M
Vet Rec. 2021 May 21:e511

Avian malaria has caused mortalities in captive penguins worldwide and it is a conservation threat for some wild penguins. The experience of staff working on penguins is highly valuable for the improvement of captivity conditions.

Gene regulation of the avian malaria parasite Plasmodium relictum, during the different stages within the mosquito vector

May 25, 2021 - 14:47 -- Open Access
Sekar V, Rivero A, Pigeault R, Gandon S, Drews A, Ahren D, Hellgren O
Genomics. 2021 May 20:S0888-7543(21)00194-4

The malaria parasite Plasmodium relictum is one of the most widespread species of avian malaria. As is the case in its human counterparts, bird Plasmodium undergoes a complex life cycle infecting two hosts: the arthropod vector and the vertebrate host. In this study, we examined transcriptomes of P. relictum (SGS1) during crucial timepoints within its vector, Culex pipiens quinquefasciatus.

Optimized CRISPR tools and site-directed transgenesis towards gene drive development in Culex quinquefasciatus mosquitoes

May 25, 2021 - 14:19 -- Open Access
Feng X, López Del Amo V, Mameli E, Lee M, Bishop AL, Perrimon N, Gantz VM
Nat Commun. 2021 May 20;12(1):2960

Culex mosquitoes are a global vector for multiple human and animal diseases, including West Nile virus, lymphatic filariasis, and avian malaria, posing a constant threat to public health, livestock, companion animals, and endangered birds. While rising insecticide resistance has threatened the control of Culex mosquitoes, advances in CRISPR genome-editing tools have fostered the development of alternative genetic strategies such as gene drive systems to fight disease vectors.

NOT Open Access | Loss of forest cover and host functional diversity increases prevalence of avian malaria parasites in the Atlantic Forest

March 17, 2021 - 17:12 -- NOT Open Access
Fecchio A, Lima MR, De La Torre GM, et al.
Int J Parasitol. 2021 Mar 12:S0020-7519(21)00093-X

Host phylogenetic relatedness and ecological similarity are thought to contribute to parasite community assembly and infection rates. However, recent landscape level anthropogenic changes may disrupt host-parasite systems by impacting functional and phylogenetic diversity of host communities. We examined whether changes in host functional and phylogenetic diversity, forest cover, and minimum temperature influence the prevalence, diversity, and distributions of avian haemosporidian parasites (genera Haemoproteus and Plasmodium) across 18 avian communities in the Atlantic Forest.

Vector incrimination and transmission of avian malaria at an aquarium in Japan: mismatch in parasite composition between mosquitoes and penguins

March 10, 2021 - 15:06 -- Open Access
Mizue Inumaru, Atsushi Yamada, Misa Shimizu, Ayana Ono, Makiko Horinouchi, Tatsuki Shimamoto, Yoshio Tsuda, Koichi Murata and Yukita Sato
Malaria Journal 2021 20:136, 6 March 2021

Captive populations of penguins outside of their natural distributions are often maintained in outdoor facilities, such as zoos and aquariums. Consequently, such penguins in captivity are constantly exposed to mosquito vectors and risk of avian malarial infection during their active period from spring to autumn, which can be lethal to these naïve birds. Previous studies have investigated parasite prevalence in mosquitoes or penguins, but simultaneous investigations, which would be crucial to monitor the transmission dynamics and cycle within a facility, have not been done. To identify dominant lineages and trends, multiple-year surveys are recommended.

Experimental study of newly described avian malaria parasite Plasmodium (Novyella) collidatum n. sp., genetic lineage pFANTAIL01 obtained from South Asian migrant bird

February 11, 2021 - 09:34 -- Open Access
Elena Platonova, Justė Aželytė, Tatjana Iezhova, Mikas Ilgūnas, Andrey Mukhin and Vaidas Palinauskas
Malaria Journal 2021 20:82, 10 February 2021

Avian malaria parasites are microorganisms parasitizing erythrocytes and various tissues of the birds; they are common and distributed worldwide. These parasites are known to infect birds of different taxa and be the cause of the deaths of birds in the wild and in captivity. The species of parasites with the ability to colonize new territories and infect local non-migratory birds are of particular interest. This scenario is likely in temperate zones of Europe, because of climate change and its contribution in spreading vectors of southern origin, which can be involved in the transmission of malaria parasites. In the present study, a tropical Plasmodium parasite from a naturally infected long-distance migrant bird was isolated and tested for its ability to develop in common species of mosquitoes and European short-distance migrant birds.

Avian Malaria and Related Parasites from Resident and Migratory Birds in the Brazilian Atlantic Forest, with Description of a New Haemoproteus Species

January 27, 2021 - 10:34 -- Open Access
Anjos CC, Chagas CRF, Kirchgatter K, et al.
Pathogens. 2021 Jan 21;10(2):103

Determining the prevalence and local transmission dynamics of parasitic organisms are necessary to understand the ability of parasites to persist in host populations and disperse across regions, yet local transmission dynamics, diversity, and distribution of haemosporidian parasites remain poorly understood. We studied the prevalence, diversity, and distributions of avian haemosporidian parasites of the genera Plasmodium, Haemoproteus, and Leucocytozoon among resident and migratory birds in Serra do Mar, Brazil.

Mosquito-borne parasites in the Great Plains: searching for vectors of nematodes and avian malaria parasites

November 14, 2020 - 16:35 -- Open Access
Noden BH, Bradt DL, Sanders JD
Acta Trop. 2020 Nov 4:105735

Vector-borne diseases in the United States have recently increased as a result of the changing nature of vectors, hosts, reservoirs, parasite/pathogens, and the ecological and environmental conditions. While most focus has been on mosquito-borne pathogens affecting humans, little is known regarding parasites of companion animal, livestock and wildlife and their potential mosquito hosts in the United States. This study assessed the prevalence of mature infections of Dirofilaria immitis and avian malaria parasites (Haemosporida) within urban mosquito (Diptera, Culicidae) communities in Oklahoma.


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