Arthropod infestation in a colony of mice

Chu, David K; Couto, Marcelo

doi:10.1038/laban1005-25

Cited by 3 publications

(4 citation statements)

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“…O. bacoti (syn. Bdellonyssys bacoti, Liponyssys bacoti) (Flynn 1973) has the widest host range, parasitizing a variety of domestic and wild mammals and birds, and is the most commonly reported mesostigmatid mite both in laboratory rodent colonies (Chu and Couto 2005;Cole et al 2005;Coons 2005;Fox 1982;Harris and Stockton 1960;Hill et al 2005;Keefe et al 1964;Kelaher et al 2005;Ram et al 1986) and in human rat mite dermatitis cases (Baumstark et al 2007;Pfister 2004, 2006;Creel et al 2003;Fishman 1988;Fox et al 2004;Pizzi et al 2004;Skirnisson 2001;Theis et al 1981).…”

Section: Characteristicsmentioning

confidence: 99%

“…Recently, however, several institutions have reported infestations with O. bacoti (tropical rat mite) and Laelaps echidnina (spiny rat mite) (Chu and Couto 2005;Cole et al 2005;Coons 2005;Hill et al 2005;Kelaher et al 2005). Both O. bacoti and L. echidnina have recently been found on wild urban Rattus norvegicus captured in alleys in Baltimore, Maryland (Easterbrook et al 2007(Easterbrook et al , 2008, and both mites were also identified during repeated outbreaks of mesostigmatid mites in the rodent colonies in my institution between 2005 and 2007 (JW personal observation).…”

Section: Prevalencementioning

confidence: 99%

“…Recent reports of successful eradication from laboratory vivaria describe the use of permethrin-impregnated cotton balls (MITEARREST, EcoHealth, Inc., Boston, MA) in the mouse cages for 5 to 8 weeks together with environmental treatment with various sustained-release pyrethrin (Chu and Couto 2005;Cole et al 2005;Hill et al 2005) or dichlorvos (Coons 2005) products. We used MITEARREST for 8 weeks in combination with sustained-release deltamethrin 0.06% (SuspendSC, Bayer Environmental Science, Montvale, NJ) fan-sprayed on floors and baseboards monthly for three treatments, timed to precede cage sanitation (JW personal observation).…”

Section: Cage Treatmentsmentioning

confidence: 99%

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New Building, Old Parasite: Mesostigmatid Mites--An Ever-Present Threat to Barrier Rodent Facilities

Watson¹

2008

ILAR Journal

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Mesostigmatid mites are blood-sucking parasitic mites found in wild rodent populations. Periodically they can also become a problem for laboratory rodent colonies, particularly when building construction or renovations disturb colonies of commensal (building) rodents that had been acting as hosts. Mesostigmatid mites infest both rats and mice and, unlike the more common rodent fur mites (Myobia, Myocoptes, and Radfordia sp.), can survive for long periods in the environment and travel considerable distances in search of new hosts. They easily penetrate barrier caging systems, including individually ventilated cages, thus circumventing the usual precautions to protect rodents from infection. The two mites reported in laboratory rodent colonies, Ornithonyssus bacoti and Laelaps echidnina, also bite humans and have the potential to transmit zoonotic diseases. Once the mites gain access to a colony, eradication requires elimination of commensal rodent reservoirs in addition to insecticide treatment of both the laboratory rodents and the environment. In view of the undesirability of insecticide use in the animal facility, it is advisable to investigate the effectiveness of preventive treatments, such as environmental application of insect growth regulators or silica-based products. This article summarizes available information on mesostigmatid mites and their laboratory incursions, and provides suggestions for diagnosis, treatment, and control based on the authors experience with several outbreaks at a large academic institution..

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Section: Characteristicsmentioning

confidence: 99%

Section: Prevalencementioning

confidence: 99%

Section: Cage Treatmentsmentioning

confidence: 99%

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New Building, Old Parasite: Mesostigmatid Mites--An Ever-Present Threat to Barrier Rodent Facilities

Watson¹

2008

ILAR Journal

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“…Unlike fur mites, these are blood-sucking mites that live in the environment and are only found on the rat during periods of feeding. Treatments reported to be effective include permethrin-impregnated cotton balls for mice and pyrethrin permethrin or dichlorvos treatment of the environment (Cole et al, 2005;Hill et al, 2005;Watson, 2008;Chu and Couto, 2005). These mites can also carry a number of rodent pathogens.…”

Section: Laboratory Animal Medicinementioning

confidence: 99%

Biology and Diseases of Rats

Otto

Franklin

Clifford

2015

Laboratory Animal Medicine

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A survey of rodent-borne pathogens carried by wild-caught Norway rats: A potential threat to laboratory rodent colonies

et al. 2008

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SummaryUnintentional infection of laboratory rodents can compromise scientific research as well as the health of the animals and animal handlers. The source of contamination often is unknown, but may be introduced by wild rats from surrounding environments. To determine whether rats in Baltimore, Maryland, USA carry infectious agents commonly found in laboratory rodent colonies, we live-trapped 162 rats during 2005 to 2006 and screened them for a panel of viruses, bacteria and parasites. Antibodies against rat coronavirus/ sialodacryoadenitis virus (91.7%), Mycoplasma pulmonis (72.9%), cilia-associated respiratory bacillus (52.1%), rat parvovirus/rat minute virus (29.2%), Kilham rat virus (10.4%), Toolan's H-1 virus (10.4%), Sendai virus (4.2%) and Theiler's mouse encephalomyelitis virus (4.2%), were detected in wild-caught Norway rats. Antibodies against reovirus and pneumonia virus of mice were not detected in wild Norway rats. Endoparasites, including Nippostrongylus braziliensis (71.6%), Rodentolepis nana or Hymenolepis diminuta (34.4%), Hetarakis spumosa (24.1%) and Trichuris muris (14.8%), as well as ectoparasites (14.8%), were identified in wild-caught rats. The risk of pathogen transmission from wild-caught rats to laboratory colonies needs to be mitigated by minimizing exposures rather than assuming wild animals represent a minimal hazard.

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Arthropod infestation in a colony of mice

Cited by 3 publications

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New Building, Old Parasite: Mesostigmatid Mites--An Ever-Present Threat to Barrier Rodent Facilities

New Building, Old Parasite: Mesostigmatid Mites--An Ever-Present Threat to Barrier Rodent Facilities

Biology and Diseases of Rats

A survey of rodent-borne pathogens carried by wild-caught Norway rats: A potential threat to laboratory rodent colonies

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