Pathogenic Fungal Species Associated with Digestive System of Periplaneta americana (Blattaria: Blattidae) Trapped from Residential Dwellings in Ahvaz City, Southwestern Iran

  • Hamid Kassiri Medical Entomology and Vector Control Department, Health Faculty, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  • Majid Zarrin Medical Mycology Department, Medicine Faculty, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  • Rahele Veys-Behbahani Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Keywords: Periplaneta americana, American cockroach, Residential environments, Fungal flora, Isolation

Abstract

Background: Cockroaches are the most prevalent domestic pests of a worldwide distribution. They were recognized as possible vectors of pathogenic bacteria, viruses, fungi and parasites in residential dwellings and hospital environ­ments. The present study isolated and identified yeasts and filamentous fungi from digestive tract of American cock­roaches, collected from three different residential regions of Iran.Methods: Seventy cockroaches were sampled using direct collection (hand catch), vacuum cleaner and sticky traps in Ahvaz, Iran in 2009–2010. Their medically important fungal microorganisms were isolated from digestive tract using standard mycological methods. Filamentous fungi were identified by macroscopic and microscopic examina­tion. Yeasts were identified by API ID32C-32100 kit.Results: A high percentage of cockroaches (88.6%) were detected to carry fungi of medical importance. Overall, 23 fungi species/genera were isolated from the American cockroaches' alimentary tract. The fungi isolated from cock­roaches, from the residential regions were species of Aspergillus, Rhizopus, Penicillium, Mucorales, Alternaria, Cladosporium, Mycelia, Chrysosporium, Candida, Rhodotorula, Zygosaccharomyces, and Debaryomyces. Candida spp. (41.4%), Aspergillus spp. (37.1%) and Rhodotorula spp (27.1%) were the most common fungi recovered on cockroaches. Candida albicans and Candida glabrata were the commonest species of the genus Candida. In addi­tion, Aspergillus niger and A. flavus were the most frequent species of the genus Aspergillus.Conclusion: American cockroaches may carry pathogenic fungi in the urban areas of Ahvaz.

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Published
2018-03-18
How to Cite
1.
Kassiri H, Zarrin M, Veys-Behbahani R. Pathogenic Fungal Species Associated with Digestive System of Periplaneta americana (Blattaria: Blattidae) Trapped from Residential Dwellings in Ahvaz City, Southwestern Iran. jad. 12(1):16-3.
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Original Article