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Apparent competition between parasitoids mediated by a shared hyperparasitoid

机译:共享的超寄生虫介导的寄生虫之间的表观竞争

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摘要

Cocoons of the specialist parasitoid Cotesia melitaearum, which attacks the Glanville fritillary butterfly in the Aland islands of SW Finland, are parasitized by the generalist hyperparasitoid Gelis agilis. We added experimentally to the system a second host species for G. agilis, C. glomerata, with which C. melitaearum does not compete for resources. After the one-time addition of the second parasitoid the natural populations of C. melitaearum declined in the treatment, as predicted by the apparent competition theory.
机译:泛寄生性超寄生物类动物Gelis agilis寄生了寄生的寄生类动物Cotesia melitaearum的茧,它们袭击了芬兰西南部奥兰群岛的格兰维尔贝母蝴蝶。我们通过实验向系统中添加了G. agilis,C。glomerata的第二个宿主物种,而C. melitaearum不会与之竞争资源。如表观竞争理论所预测的,在一次性添加第二种寄生虫后,该处理中的自然种群C. melitaearum减少了。

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