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Millette et al. (Ecology Letters, 2020, 23:55-67) reported no consistent worldwide anthropogenic effects on animal genetic diversity using repurposed mitochondrial sequences. We describe limitations to this study, some of which are common to other macrogenetic studies, that may lead to misinterpretations and unintended consequences for conservation.
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Paz‐Vinas et al. (2021) studied this question.