The immature stages of Dermestes maculatus, Sarcophaga sp. and Phaenicia sericata as potential paratenic hosts for Trichinella spiralis in nature
| Autor: | César Fiel, P. E. Steffan, Eliana Riva |
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| Rok vydání: | 2014 |
| Předmět: |
media_common.quotation_subject
Dermestes maculatus Trichinella spiralis Antibodies Helminth Zoology Insect Host-Parasite Interactions Mice Paratenic Animals media_common Larva General Veterinary biology Maggot Inoculation Diptera fungi Trichinellosis General Medicine Anatomy biology.organism_classification Infectious Diseases Nematode Insect Science Parasitology |
| Zdroj: | Parasitology Research. 114:149-154 |
| ISSN: | 1432-1955 0932-0113 |
| DOI: | 10.1007/s00436-014-4171-7 |
| Popis: | The role of some insect populations in the trans- mission of Trichinella sp. has been demonstrated. However, most of the studies have been conducted under controlled conditions which may influence the real role that they could play as a paratenic host in nature. To enlight this issue, a series of studies to determine the infective capability of the muscle larva of Trichinella spiralis recovered from immature stages of insect populations that fed on infected tissues exposed to natural conditions were carried out. Mice harbouring T. spiralis muscle larvae (ML) were sacrificed and deposited onapitfall trapwhichwasestablishedinanopenand safearea through 25 days in summer. Necrophilous and necrophagous insects that fed on corpses were recovered, identified and processed to search for live ML of T. spiralis. A complemen- tary study in which maggots of Dermestes maculatus recov- ered from nature were induced to feed on muscle tissues harbouring T. spiralis larvae was also performed. The muscle larvae recovered from insects at different times of exposition were counted and inoculated to mice to determine the repro- ductive capability index (RCI). At day 3 of exposition, 29 live ML of T. spiralis were recovered from maggots of Phaenicia sericata. The RCI for these larvae was 133.6. On day 5 of exposition, maggots ofSarcophaga sp. were identified and 17 live T. spiralis larvae were recovered; the RCI of these larvae was 43.4. The T. spiralis ML recovered from maggots of D. maculatus obtained after 2 days of feeding on experimen- tally infected tissue showed a RCI of 24. The results suggest that larval stages of P. sericata, Sarcophaga sp. and D. maculatus might have an important role as a paratenic host of T. spiralis, which, in terms, may influence the epidemiolo- gy of this nematode in endemic areas of trichinellosis. |
| Databáze: | OpenAIRE |
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