Ecology of Sciaridae: its association with green mold disease (Ishikawa)

 

Recently, I am studying ecology of sciaridae known as pest of mushroom cultivation. Today, I would like to introduce the journal about association between sciaridae and green mold disease which occasionally happen in mushroom cultivation. There are many kinds of sciaridae. And several species of them larvae damage the mushroom compost and mycelia and adult bring other fungi into cultivation room. Trichoderma aggressivium potentially brought by sciarid fly cause green mold. One of the sciaridae, Lycoriella ingenua known as pest of white button mushroom prefer to oviposit to compost infested by T. aggressivium compared to no infested compost. The author investigated whether the association between L. ingenua and T. aggressivium is benefit to L. ingenua. They showed results, high female emergence, faster development from larvae to adult and larger female adult size in spawned mushroom compost infested T. aggressivium compared to no infested spawned mushroom compost. 

By the way, I previously found green mold like this picture in my mushroom cultivation.

最近私はキノコ栽培の害虫として知られているクロバネキノコバエの生態について調べています。今回はキノコ栽培で時折発生するアオカビとクロバネキノコバエの関係性について調べた論文について紹介したいと思います。クロバネキノコバエにもたくさんの種類がいますが、そのいくつかの種は幼虫が栽培きのこの菌糸を食害したり、成虫が別の菌を栽培室に持ちこんだりします。それらによって持ち込まれる恐れのあるTrichoderma aggressiviumという病原菌は緑色のカビを引き起こします。クロバネキノコバエの一種であるLycoriella ingenuaはマッシュルームの害虫として知られていますが、その雌の個体はT. aggressiviumに感染していないマッシュルームの堆肥よりも、それに感染した堆肥に産卵することを好むようです。この論文の著者はL. ingenuaにとって、T. aggressiviumとのつながりが利益のあるものなのかを調査し、T. aggressiviumに感染したマッシュルームの堆肥では、L. ingenuaの雌の羽化率が高く、幼虫から成虫までの発育速度が速く、そして雌のサイズが大きくなるということを明らかにしました。

ちなみに私も自宅で栽培していたマッシュルームに写真のような緑っぽいカビを発生させてしまったことがありました。



・Journal resource

The mushroom sciarid fly, Lycoriella ingenua, benefits from its association with green mold disease (Trichoderma aggressivum) in commercial mushroom production

Maria Mazin ・ Stefanos S. Andreadis ・ Nina E. Jenkins ・ Edwin G. Rajotte

Journal of Pest Science (2018) 91:815-822


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