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Sylvatic trichinellosis in Texas.

D B Pence¹, G La Rosa, F Mancini Barbieri

¹Department of Pathology, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, Texas 79430, USA.

Parasite (Paris, France)

|August 4, 2001

Summary

Sylvatic trichinellosis, a parasitic disease, was detected in Texas wildlife for the first time. Coyotes were found to be infected with Trichinella murrelli, indicating a new sylvatic cycle in the region.

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Area of Science:

Veterinary Parasitology
Wildlife Epidemiology
Molecular Diagnostics

Background:

No prior reports of domestic or sylvatic trichinellosis existed in Texas.
Understanding parasite distribution in wildlife is crucial for public health and ecological assessments.

Purpose of the Study:

To investigate the presence of Trichinella species in potential wildlife reservoirs in southern Texas.
To establish the first report of sylvatic trichinellosis in Texas.

Main Methods:

Collection of tongues from 211 wild mammals (coyotes, bobcats, raccoons, opossums, ocelots, wild boars) in southern Texas (1998-1999).
Artificial digestion to detect Trichinella spp. larvae.
Multiple-polymerase chain reaction (PCR) analysis for species identification.

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Main Results:

Trichinella spp. infection was confirmed in nine (5.8%) coyotes.
Larvae from seven infected coyotes were identified as Trichinella murrelli.
This marks the first documented instance of sylvatic trichinellosis in Texas.

Conclusions:

Sylvatic trichinellosis, specifically Trichinella murrelli, is present in the coyote population of southern Texas.
The findings establish a previously unreported sylvatic transmission cycle of Trichinella in Texas.
This highlights the importance of ongoing wildlife surveillance for parasitic diseases.