Isolation of fungi from a fungivorous insect, the minute brown scavenger beetle (Latridiidae), and their potential ability for mycotoxin production

Yoshinami Makoto, Kobayashi Naoki, Takino Masahiko, Sugita-Konishi Yoshiko

doi:10.2520/myco.68-1-3

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食菌性昆虫ヒメマキムシ（Latridiidae）から分離されたカビとその潜在的マイコトキシン産生能
Isolation of fungi from a fungivorous insect, the minute brown scavenger beetle (Latridiidae), and their potential ability for mycotoxin production

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Abstract

Fungivorous insects are serious hazard as potential contaminants in food. This study investigated fungi and their mycotoxins isolated from fungivorous insects (minute brown scavenger beetles [Latridiidae]) captured in a building located in Chiba, Narashino. We trapped 18 insects (heads) and isolated 780 colonies of fungi from them, which we classified into 3 genera: Penicillium (90.1%), Aspergillus (7.7%), Cladosporium (1.0%) and others (1.2%). The population of these fungi reflected that of fungi isolated from the environment inhabited by the insects. In the genus Aspergillus, sterigmatocystin and cyclopiazonic acid were detected by a simultaneous detection system of liquid chromatography-quadrupole time-of-flight mass spectrometry when the isolates were cultured in medium. These findings strongly suggest that Latridiidae are not only a physical but also a microbial hazard as a vector for the spread of mycotoxin-producing fungi in factories for food products and the storage of cereals.

Journal

JSM Mycotoxins

JSM Mycotoxins 68 (1), 7-11, 2018

Japanese Society of Mycotoxicology

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Isolation of fungi from a fungivorous insect, the minute brown scavenger beetle (<i>Latridiidae</i>), and their potential ability for mycotoxin production