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Mar 8, 2025Keywords:
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Accidental myiasis caused by housefly (Musca domestica) in Rock Hyrax (Procavia capensis Jayakari) in Saudi Arabia
Abstract
Purpose: To determine the organisms responsible for intestinal infection in rock hyrax (Procavia capensis jayakari), a wild animal in Saudi Arabia, through morphological and molecular characterization.
Methods: Intestinal contents obtained from 20 dead rock hyrax were used to confirm the presence of larvae. Larval morphology was examined using stereo-microscopy and scanning electron microscopy (SEM). For molecular characterization, ribosomal 18S rDNA and mitochondrial DNA (mtDNA) gene sequences in larval DNA were amplified by polymerase chain reaction (PCR).
Results: Four samples of the intestinal contents of dead rock hyrax showed positive response indicative of larval infection (infection rate 20 %) with a slender and creamy larval structure in rock hyrax intestine. For molecular characterization, from the 20 samples, 11 ribosomal 18S rDNA sequences and six mitochondrial DNA (mtDNA) sequences presented positive polymerase chain reaction (PCR) signals. The gene sequences were used to construct an evolutionary tree with other related sequences available in a gene database. The morphological features and the evolutionary trees were developed based on the above two genes, confirming the resemblance between Musca domestica (Housefly) and larvae in this study.
Conclusions: The intestine of rock hyrax is invaded by houseflies. The results obtained could be a first step in understanding the cause of myiasis infection in wild animals. The translational value of these findings raises a serious concern regarding the transmission of this disease in animals with houseflies being the vector for pathogens to enter hosts such as wild animals. This would pose a serious problem in preserving the ecological balance of wild animals in the future.
