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Arquivos do Instituto Biológico

versão On-line ISSN 1808-1657


AQUINO, S.  e  POTENZA, M.R.. Analysis of mycobiota linked to insects isolated from pet food collected in pet shops. Arq. Inst. Biol. [online]. 2013, vol.80, n.2, pp.243-247. ISSN 1808-1657.

Insects invade stored foods such as corn, nuts and dried fruits that are ingredients of pet food. Toxigenic fungi (Aspergillus, Penicillium and Fusarium) are also contaminants of these substrates. The insects are mechanical vectors and the infestation increases the humidity of dried food, thus promoting the fungal growth and the production of mycotoxins. The objective of this study was to analyze the mycobiota associated with insect infestation found in pet foods. Twenty samples were plated on potato agar incubated at 25º C during 7 days, for the isolation of fungi from pet food and from insects isolated from each ingredient. The insects were identified by using a dichotomous key. All samples showed fungal presence, and Sitophilus zeamais was the predominant insect with the highest frequency in the collected samples, indicating it as a vector of many fungal genera. Pet foodscomposed by a mixture of seeds and grains are subject to microbial contamination, and the insects are important mechanical vectors of spoilage and toxigenic fungi, endangering animal health.

Palavras-chave : Insects; fungi; pet food; grains; contamination.

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