Reduced longevity of Dermacentor variabilis and Ixodes scapularis (Acari: Ixodidae) molting from immatures fed on Rattus norvegicus.


Nymphal and adult Dermacentor variabilis (Say) molting from larvae and nymphs, respectively, that fed on a Holtzman strain of Rattus norvegicus demonstrated reduced longevity compared with those from immature stages that fed on albino laboratory mice, Mus musculus. The decrease in survivorship did not appear to be caused by host-acquired resistance; lower… (More)


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