Human Infestation with Dermanyssus gallinae (Acari: Dermanyssidae) in a Family Referred with Pruritus and Skin Lesions.

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Abstract

The poultry red mite, Dermanyssus gallinae is one of the most economically important ectoparasites in hens and some species of mammals worldwide. Cases of human infestation have been reported worldwide. In this study we report infestation in three members of a family referred with pruritus and allergic dermatitis rash. They have collected very small animals and carried them to the laboratory which later was confirmed as D. gallinae. They claimed that they had been bitten with this ectoparasite. This is the first case report of human infestation owing to D. gallinae from Iran.

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A gallery of the key characters to ease identification of Dermanyssus gallinae (Acari: Gamasida: Dermanyssidae) and allow differentiation from Ornithonyssus sylviarum (Acari: Gamasida: Macronyssidae)

Antonella Di Palma, Annunziata Giangaspero, Maria Assunta Cafiero … (2012)

Background Dermanyssus gallinae (poultry red mite) is a major threat for the poultry industry and is of significant interest for public health. Identification of D. gallinae can be difficult for scientists not familiar with mite morphology and terminology especially when trying to use identification keys. Moreover, this species may easily be confused with another dermanyssoid mite, Ornithonyssus sylviarum (northern fowl mite), which often shares the same hosts and environment. Methods Specimens of D. gallinae were collected at poultry farms in the Puglia and performed for light and scanning electron microscopy observations, identification and micrographs. Moreover specimens of O. sylviarum were collected separately macerated and mounted on slides for light microscopy observations, identification and pictures. Results The micrographs used in this study, based on LM and SEM observations, highlight the following important identifying characters of D. gallinae: the prominent shoulders of the dorsal shield and the jagged edges of the shield reticulations, the position of setae j1, s1 and the epigynal pores, and the presence on tibia IV pl of one seta. Additional micrographs highlighting the shape of the dorsal (abruptly narrowed posteriorly) and epigynal (narrowly rounded posteriorly) shields and the chelicera (elongate, with distinct digits) of O. sylviarum enable its differentiation from D.gallinae. Conclusion The photographic support provided here (both LM and SEM pictures) can be considered a practical tool for scientists who are not well acquainted with the morphology of D.gallinae, and who are involved with classical and molecular systematics, veterinary and human health aspects of poultry red mites.

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Pseudoscabies caused by Dermanyssus gallinae in Italian city dwellers: a new setting for an old dermatitis.

Gabriele Schino, M Lomuto, E Circella … (2008)

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Dermatitis in humans associated with the mites Pyemotes tritici, Dermanyssus gallinae, Ornithonyssus bacoti and Androlaelaps casalis in Israel.

Y Braverman, I Yeruham, Lee S. Rosen (2002)

Multiple erythematous papules accompanied by severe pruritus were observed in humans bitten by the mites (Acari) Pyemotes tritici (Newport) (Pyemotidae), Dermanyssus gallinae (De Geer) (Dermanyssidae), Ornithonyssus bacoti Hirst (Macronyssidae) and Androlaelaps casalis (Berlese) (Laelapidae). Eight case histories are presented and the impact of these species on human health is discussed.