To investigate the role of fleshfly maggots as a paratenic host for Trichinella spiralis larvae, maggots of Sarcophaga argyrostoma (Muscidae, Sarcophagidae) kept at different temperatures (26, 22, 20, 16, 12, 8, and 4 C) were allowed to feed on T. spiralis-infected mouse meat. Trichinella larvae found in maggots kept at 8–26 C were able to cause infection when inoculated in mice. Infective larvae survived in maggots up to 5 days postinfection at 8 C and for shorter periods of time at higher temperatures. The survival time in maggots was negatively related to the temperature of maggot breeding. The results suggest that the role of S. argyrostoma in the dissemination of Trichinella larvae in nature is limited in comparison to the role played by mammals with scavenger and cannibalistic behavior.
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