by MacIvor & Irwin
Solitary bees sent by mail
Wild bees are recognized as important pollinators of many crops alongside honey bees. In recent years, mason bees have become popular among farmers and gardeners because they are easy to manage and highly effective pollinators. The cocoons of some species can be purchased online and shipped through the mail. However, this growing mail-order trade poses potential risks to biodiversity.
Many online sellers offer cocoons without clear identification, and shipments may contain non-native or even invasive bee species. Once released, these bees can compete with local species for food and nesting space, spread parasites and diseases, and disrupt the delicate balance of native bee communities. For example, the introduction of non-native mason bees in parts of North America has already been linked to sharp declines in local species. Compounding the problem, suppliers may inadvertently mix species or move bees across regions, threatening genetic diversity and local adaptation.
Current regulations in Canada and the United States are inconsistent. We recommend stronger oversight, including species-level identification, restrictions on interregional trade, and support for ethical local suppliers. Public education is also vital as helping people understand that the best way to support pollinators is by protecting and promoting native species where they live.
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