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Wildlife trade and consumer preference for species rarity: an examination of caged-bird markets in Sumatra

机译：野生动物贸易和消费者对物种稀有性的偏好：对苏门答腊笼鸟市场的考察

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摘要

This study examines conservation effects of wildlife trade using demand and supply data from caged-bird markets in Sumatra, Indonesia. When consumers have a strong preference for species rarity, trade could result in wildlife overexploitation and species extinction. Results from a choice experiment show that buyers of caged birds indeed value species rarity. However, not all rare species are equally preferred. Species that are frequently traded lose their rarity value, even if rare in the wild. Analysis of time-series data collected from traders over a period of 20 months between 2013 and 2015 reveals an inelastic supply function for rare species, with market arrivals being insensitive to price changes. This may be due to a declining stock of rare species in the wild. Bird trade together with habitat loss can lead to extinction of a number of rare species in Indonesia. Several policy approaches on regulating caged-bird markets are discussed.
机译：这项研究使用印度尼西亚苏门答腊笼养鸟市场的供求数据检验了野生动植物贸易的保护作用。当消费者对物种稀有性有强烈偏好时，贸易可能会导致野生动植物的过度开发和物种灭绝。选择实验的结果表明，笼养鸟的购买者确实珍视物种稀有性。但是，并非所有稀有物种都同样受到欢迎。即使在野外稀有，经常交易的物种也会失去其稀有价值。对2013年至2015年期间20个月内从贸易商处收集的时间序列数据进行的分析显示，稀有物种的供应功能缺乏弹性，市场到货对价格变化不敏感。这可能是由于野生稀有物种数量减少所致。鸟类贸易和栖息地的丧失可能导致印度尼西亚许多稀有物种的灭绝。讨论了管理笼养鸟市场的几种政策方法。

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