Why dermanyssosis should be listed as an occupational hazard
Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia, Italy. Occupational and environmental medicine
(Impact Factor: 3.27).
04/2011; 68(8):628. DOI: 10.1136/oemed-2011-100002
Available from: Davide Immediato
- "VETPAR-7691; No. of Pages 5 workers (Cafiero et al., 2011). The control of red mites relies on the use of synthetic acaricides such as organophosphosphates, carbamates and pyrethroids (Chauve, 1998; Sparagano et al., 2014). "
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ABSTRACT: The poultry red mite, Dermanyssus gallinae (De Geer, 1778) (Acari: Dermanyssidae) is one of the most economically important ectoparasites of laying hens worldwide. Chemical control of this mite may result in environmental and food contamination, as well as the development of drug resistance. High virulence of Beauveria bassiana sensu lato strains isolated from naturally infected hosts or from their environment has been demonstrated toward many arthropod species, including ticks. However, a limited number of studies have assessed the use of B. bassiana for the control of D. gallinae s.l. and none of them have employed native strains. This study reports the pathogenicity of a native strain of B. bassiana (CD1123) against nymphs and adults of D. gallinae. Batches of nymph and adult mites (i.e., n=720 for each stage) for treated groups (TGs) were placed on paper soaked with a 0.1% tween 80 suspension of B. bassiana (CIS, 10(5), 10(7) and 10(9) conidia/ml), whilst 240 untreated control mites for each stage (CG) were exposed only to 0.1% tween 80. The mites in TG showed a higher mortality at all stages (p<0.01) when compared to CG, depending on the time of exposure and the conidial concentration. A 100% mortality rate was recorded using a CIS of 10(9) conidia/ml 12 days post infection (DPI) in adults and 14 DPI in nymphs. B. bassiana suspension containing 10(9) conidia/ml was highly virulent towards nymph and adult stages of D. gallinae, therefore representing a possible promising natural product to be used in alternative or in combination to other acaricidal compounds currently used for controlling the red mite.
Copyright © 2015 Elsevier B.V. All rights reserved.
Veterinary Parasitology 07/2015; 212(3). DOI:10.1016/j.vetpar.2015.07.004 · 2.46 Impact Factor
Available from: Antonella Di Palma
- "Though relatively rare, the scientific literature records episodes of hen mortality associated with D. gallinae, mainly involving chicks . The poultry red mite is also widely reported as being responsible for dermatological problems of varying severity in humans, both in poultry workers (technicians, farmers, veterinarians) [1,17]) and in urban residents. In fact in the last case, military personnel living in barracks, hospital patients, and office employees may be exposed to mite-infested synanthropic birds [18-23]. "
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ABSTRACT: 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.
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.
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.
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.
Parasites & Vectors 05/2012; 5(1):104. DOI:10.1186/1756-3305-5-104 · 3.43 Impact Factor
Available from: europepmc.org
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ABSTRACT: Pet birds are a not-so-well known veterinarian's clientship fraction. Bought individually or in couples, as families often do (which is a lucrative business for pet shops or local breeders) or traded (sometimes illegally) for their very high genetic or exotic value, these birds, commonly canaries, parakeets or parrots, are regularly sold at high prices. These animals, however, are potential carriers and/or transmitters of zoonotic diseases. Some of them could have an important impact on human health, like chlamydophilosis, salmonellosis or even highly pathogenic avian influenza A H5N1. This review paper, although non exhaustive, aims at enlightening, by the description of several cases of bird-human transmission, the risks encountered by bird owners, including children. Public health consequences will be discussed and emphasis will be made on some vector-borne diseases, known to be emergent or which are underestimated, like those transmitted by the red mite Dermanyssus gallinae. Finally, biosecurity and hygiene, as well as prevention guidelines will be developed and perspectives proposed.
Veterinary Research 05/2013; 44(1):36. DOI:10.1186/1297-9716-44-36 · 2.82 Impact Factor
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