Massive Infection of Lungs with Exo-Erythrocytic Meronts in European Robin Erithacus rubecula during Natural Haemoproteus attenuatus Haemoproteosis

Haemoproteus species are widespread avian blood parasites belonging to Haemoproteidae (Haemosporida). Blood stages of these pathogens have been relatively well-investigated, though exo-erythrocytic (tissue) stages remain unidentified for the majority of species. However, recent hi...

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Autores principales:	Carolina Hernández-Lara, Mélanie Duc, Mikas Ilgūnas, Gediminas Valkiūnas
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	haemosporidian parasites <i>Haemoproteus</i> birds exo-erythrocytic stages meronts lung damage Veterinary medicine SF600-1100 Zoology QL1-991
Acceso en línea:	https://doaj.org/article/d67162e32e9643d391f84b8b12872871
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id	oai:doaj.org-article:d67162e32e9643d391f84b8b12872871
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spelling	oai:doaj.org-article:d67162e32e9643d391f84b8b128728712021-11-25T16:20:14ZMassive Infection of Lungs with Exo-Erythrocytic Meronts in European Robin <i>Erithacus rubecula</i> during Natural <i>Haemoproteus attenuatus</i> Haemoproteosis10.3390/ani111132732076-2615https://doaj.org/article/d67162e32e9643d391f84b8b128728712021-11-01T00:00:00Zhttps://www.mdpi.com/2076-2615/11/11/3273https://doaj.org/toc/2076-2615<i>Haemoproteus</i> species are widespread avian blood parasites belonging to Haemoproteidae (Haemosporida). Blood stages of these pathogens have been relatively well-investigated, though exo-erythrocytic (tissue) stages remain unidentified for the majority of species. However, recent histopathological studies show that haemoproteins markedly affect bird organs during tissue merogony. This study investigated the exo-erythrocytic development of <i>Haemoproteus</i> (<i>Parahaemoproteus</i>) <i>attenuatus</i> (lineage hROBIN1), the common parasite of flycatchers (Muscicapidae). Naturally infected European robins <i>Erithacus rubecula</i> were examined. Parasite species and lineage were identified using microscopic examination of blood stages and DNA sequence analysis. Parasitaemia intensity varied between 0.8 and 26.5% in seven host individuals. Organs of infected birds were collected and processed for histological examination. Tissues stages (meronts) were seen in six birds and were present only in the lungs. The parasites were usually located in groups and were at different stages of maturation, indicating asynchronous exo-erythrocytic development. In most parasitized individuals, 100 meronts were observed in 1 cm<sup>2</sup> section of lungs. The largest meronts reached 108 µm in length. Mature meronts contained numerous roundish merozoites of approximately 0.8 µm in diameter. Megalomeronts were not observed. Massive merogony and resulting damage of lungs is a characteristic feature during <i>H. attenuatus</i> infections and might occur in related parasite lineages, causing haemoproteosis.Carolina Hernández-LaraMélanie DucMikas IlgūnasGediminas ValkiūnasMDPI AGarticlehaemosporidian parasites<i>Haemoproteus</i>birdsexo-erythrocytic stagesmerontslung damageVeterinary medicineSF600-1100ZoologyQL1-991ENAnimals, Vol 11, Iss 3273, p 3273 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	haemosporidian parasites <i>Haemoproteus</i> birds exo-erythrocytic stages meronts lung damage Veterinary medicine SF600-1100 Zoology QL1-991
spellingShingle	haemosporidian parasites <i>Haemoproteus</i> birds exo-erythrocytic stages meronts lung damage Veterinary medicine SF600-1100 Zoology QL1-991 Carolina Hernández-Lara Mélanie Duc Mikas Ilgūnas Gediminas Valkiūnas Massive Infection of Lungs with Exo-Erythrocytic Meronts in European Robin <i>Erithacus rubecula</i> during Natural <i>Haemoproteus attenuatus</i> Haemoproteosis
description	<i>Haemoproteus</i> species are widespread avian blood parasites belonging to Haemoproteidae (Haemosporida). Blood stages of these pathogens have been relatively well-investigated, though exo-erythrocytic (tissue) stages remain unidentified for the majority of species. However, recent histopathological studies show that haemoproteins markedly affect bird organs during tissue merogony. This study investigated the exo-erythrocytic development of <i>Haemoproteus</i> (<i>Parahaemoproteus</i>) <i>attenuatus</i> (lineage hROBIN1), the common parasite of flycatchers (Muscicapidae). Naturally infected European robins <i>Erithacus rubecula</i> were examined. Parasite species and lineage were identified using microscopic examination of blood stages and DNA sequence analysis. Parasitaemia intensity varied between 0.8 and 26.5% in seven host individuals. Organs of infected birds were collected and processed for histological examination. Tissues stages (meronts) were seen in six birds and were present only in the lungs. The parasites were usually located in groups and were at different stages of maturation, indicating asynchronous exo-erythrocytic development. In most parasitized individuals, 100 meronts were observed in 1 cm<sup>2</sup> section of lungs. The largest meronts reached 108 µm in length. Mature meronts contained numerous roundish merozoites of approximately 0.8 µm in diameter. Megalomeronts were not observed. Massive merogony and resulting damage of lungs is a characteristic feature during <i>H. attenuatus</i> infections and might occur in related parasite lineages, causing haemoproteosis.
format	article
author	Carolina Hernández-Lara Mélanie Duc Mikas Ilgūnas Gediminas Valkiūnas
author_facet	Carolina Hernández-Lara Mélanie Duc Mikas Ilgūnas Gediminas Valkiūnas
author_sort	Carolina Hernández-Lara
title	Massive Infection of Lungs with Exo-Erythrocytic Meronts in European Robin <i>Erithacus rubecula</i> during Natural <i>Haemoproteus attenuatus</i> Haemoproteosis
title_short	Massive Infection of Lungs with Exo-Erythrocytic Meronts in European Robin <i>Erithacus rubecula</i> during Natural <i>Haemoproteus attenuatus</i> Haemoproteosis
title_full	Massive Infection of Lungs with Exo-Erythrocytic Meronts in European Robin <i>Erithacus rubecula</i> during Natural <i>Haemoproteus attenuatus</i> Haemoproteosis
title_fullStr	Massive Infection of Lungs with Exo-Erythrocytic Meronts in European Robin <i>Erithacus rubecula</i> during Natural <i>Haemoproteus attenuatus</i> Haemoproteosis
title_full_unstemmed	Massive Infection of Lungs with Exo-Erythrocytic Meronts in European Robin <i>Erithacus rubecula</i> during Natural <i>Haemoproteus attenuatus</i> Haemoproteosis
title_sort	massive infection of lungs with exo-erythrocytic meronts in european robin <i>erithacus rubecula</i> during natural <i>haemoproteus attenuatus</i> haemoproteosis
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d67162e32e9643d391f84b8b12872871
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Massive Infection of Lungs with Exo-Erythrocytic Meronts in European Robin <i>Erithacus rubecula</i> during Natural <i>Haemoproteus attenuatus</i> Haemoproteosis

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