Technical Comments

Comment on “Invasive Harlequin Ladybird Carries Biological Weapons Against Native Competitors”

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Science  20 Sep 2013:
Vol. 341, Issue 6152, pp. 1342
DOI: 10.1126/science.1241600

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Conclusions about the nontarget effects of putatively invasive pathogens should be based on biologically relevant data. We disagree that the research experiments on a microsporidium isolated from Harmonia axyridis conducted by Vilcinskas et al. (Reports, 17 May 2013, p. 862) can explain the decline of native coccinellid species in the absence of such data.

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