First report on the occurrence of psoroptic mange in llamas (Lama glama) of the Andean region

An outbreak of Psoroptes sp.-caused mange was detected in a llama herd of Larcas, Jujuy province, Argentina. Infested llamas showed alopecia, erythema, hyperpigmentation, hyperkeratosis, and inflammation of the ear pinnae, as well as crusts and serous, serosanguineous, or purulent drainage with unpl...

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Veröffentlicht in:Parasitology research (1987) 2024-09, Vol.123 (9), p.334, Article 334
Hauptverfasser: Sosa, Fabiana E., Medina, Diego M., Micheloud, Juan F., Borsetti, Hugo M., Hernández, Nancy, Schnittger, Leonhard, Romero, Sandra R., Florin-Christensen, Mónica
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container_issue 9
container_start_page 334
container_title Parasitology research (1987)
container_volume 123
creator Sosa, Fabiana E.
Medina, Diego M.
Micheloud, Juan F.
Borsetti, Hugo M.
Hernández, Nancy
Schnittger, Leonhard
Romero, Sandra R.
Florin-Christensen, Mónica
description An outbreak of Psoroptes sp.-caused mange was detected in a llama herd of Larcas, Jujuy province, Argentina. Infested llamas showed alopecia, erythema, hyperpigmentation, hyperkeratosis, and inflammation of the ear pinnae, as well as crusts and serous, serosanguineous, or purulent drainage with unpleasant smell in the external ear canal. Microscopic evaluation of skin scrapings revealed 0.5- to 0.7-mm-long acari identified as Psoroptes sp. based on their morphology. Histology showed a typical allergic reaction with perivascular to periadnexal mixed inflammatory infiltrate. Phylogenetic tree analysis showed that the cytochrome c oxidase subunit I gene sequences analyzed from the sampled acari clustered into a single P. ovis clade including sequences isolated from rabbits and bighorn sheep, with P. natalensis as a sister taxon that infested bighorn sheep from the USA. Phylogenetic analysis of cytochrome b sequences showed three well-supported clades, one of which contained the sequences of the Larcas llamas and US bighorn sheep isolates. This is the first report on P. ovis infestation of llamas raised in their original location. Investigations on mange etiological agents acting on South American camelids and their distribution are necessary to implement control strategies to mitigate the negative impacts of these parasitic infections.
doi_str_mv 10.1007/s00436-024-08357-0
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source MEDLINE; SpringerNature Journals
subjects Allergies
Animal diseases
Animals
Argentina - epidemiology
Biomedical and Life Sciences
Biomedicine
Camelids, New World - parasitology
Cytochrome
Cytochrome b
Cytochrome-c oxidase
Cytochromes b - genetics
Disease Outbreaks - veterinary
Ear canal
Electron Transport Complex IV - genetics
Erythema
Hyperpigmentation
Immunology
Lama glama
Medical Microbiology
Microbiology
Mite Infestations - epidemiology
Mite Infestations - parasitology
Mite Infestations - veterinary
Phylogenetics
Phylogeny
Psoroptes ovis
Psoroptidae - classification
Psoroptidae - genetics
Sequence Analysis, DNA
Sheep
Skin diseases
title First report on the occurrence of psoroptic mange in llamas (Lama glama) of the Andean region
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