Fungi fruiting hypogeously are believed to form spore banks in soil especially because some fruitbodies are not removed by animals. However, little is known on the proportion of fruitbodies that are not removed by animals. We took advantage of the brûlé phenomenon, which allows delineation of the mycelium distribution, to assess the proportion of unremoved black truffle (Tuber melanosporum) fruitbodies in the context of plantations where fruitbodies are actively sought and harvested by truffle growers. We inspected portions of the brûlés after the harvest season to find unremoved fruitbodies. On average, from six truffle grounds in which a total of 38 brûlés were investigated, unremoved fruitbodies represented 33% of the whole fruitbody production (42% when averaging all the brûlés). We discuss this value and its high variability among truffle grounds. Beyond the local and variable accidental reasons that may lead to this high proportion, we speculate that the formation of some undetectable fruitbodies may be under selection pressure, given the reproductive biology of T. melanosporum.

中文翻译：

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马铃薯块茎中的土壤孢子库：高达42％的子实体在管理的松露园中仍未清除。

人们认为，过大结果的真菌会在土壤中形成孢子库，尤其是因为某些子实体无法被动物清除。但是，对于未被动物清除的果体的比例知之甚少。我们利用brûlé现象（可以描绘出菌丝体的分布）来评估未去除的黑松露（块茎黑色素菌）的比例。）松露种植者积极寻找和收获果体的人工林中的果体。收成季节过后，我们检查了brllés的部分，以发现未除去的果体。平均而言，在六个松露场中，总共调查了38个brllé，未去除的子实体占整个子实体产量的33％（平均所有brllés为42％）。我们讨论了该值及其在松露地之间的高度可变性。除了可能导致这种高比例的局部和可变的偶然原因之外，我们推测，鉴于黑腹孢子虫的繁殖生物学，一些无法检测到的子实体的形成可能处于选择压力下。