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Development of Brugia pahangi in the Jird, Meriones unguiculatus, with Notes on Infections in Other Rodents
Lawrence R. Ash and John M. Riley
The Journal of Parasitology
Vol. 56, No. 5 (Oct., 1970), pp. 962-968
Stable URL: http://www.jstor.org/stable/3277514
Page Count: 7
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Infective larvae of Brugia pahangi dissected from Armigeres subalbatus that had fed 8 to 9 days previously on an infected dog were inoculated subcutaneously into the testicular area of 42 jirds, Meriones unguiculatus. All animals became infected. Early developmental stages were recovered from the pelt, carcass, lymph nodes, fat, testes, heart, and lungs. The third molt occurred from 6 to 9 days and the fourth molt from 18 to 24 days postinfection. Males started the last two molts from 1 to 2 days earlier than females. Twenty-five of 33 jirds developed patent infections with microfilaremias persisting for at least 13 weeks. Microfilarial densities varied considerably and appeared to be somewhat dependent on the size of the larval inoculum used. Jirds infected with 10 to 50 larvae usually developed low microfilaremias; high microfilarial densities were frequently see following inoculation of 70 to 100 larvae. The mean prepatent period for all infections was 67 days; the shortest time was 57 days, the longest 84 days. Adult worms were usually found either in the heart and lungs or in the testes, but the highest and most stable microfilaremias occurred in animals with a majority of worms in the testes. Other potential rodent hosts investigated included a second species of jird, M. libycus, a wood rat, Neotoma lepida, a kangaroo rat, Dipodomys merriami, and golden hamsters. Developing worms were found in all but the kangaroo rats, but microfilariae were produced only in M. libycus. Worms were found almost exclusively in the heart and lungs of these other rodents.
The Journal of Parasitology © 1970 The American Society of Parasitologists