Date Published:
2023/07/01/
Abstract:
Humankind's appreciation for butterflies spans cultures and millennia, including the practice of assembling butterfly collections. We monitored the global e-commerce platform eBay.com for one year and obtained 50,555 time-stamped transactions of 3767 species (739 genera) of butterflies. This is nearly 20% of all butterfly species on Earth. A total of 552 sellers were based in 44 countries across five continents. At least 96% of the traded species required transportation of the specimen from its country of origin to its seller, usually from the Global South to the United States and Europe. To our knowledge, this is the most spatially and temporally detailed record of trans-boundary wildlife movement of any taxonomic group. We quantified the aesthetics of butterflies deemed desirable (e.g., size, shape, and color) and showed that while endangered species command higher prices, a butterfly's aesthetic ranking, not its range, abundance, nor phylogenetic status, best predicts its trade volume. These results emphasize the complicated interplay between wildlife market economics and human aesthetic appreciation.
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