Quantifying invasion pathways: fish introductions from the aquarium trade
Quantifying invasion pathways: fish introductions from the aquarium trade
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DOI：
10.1139/f08-056
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发表时间：
2008-07-01
影响因子：
2.4
通讯作者：
Leung, Brian
中科院分区：
文献类型：
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作者：
Gertzen, Erin;Familiar, Oriana;Leung, Brian
引进的物种可能造成经济和环境损害。研究人员已经开发出基于生物学特性的外来物种风险评估模型。然而，很少有量化繁殖体的压力，尽管它的相关性建立。两者都需要识别入侵风险。我们把重点放在通过水族馆贸易引进的鱼类上，因为这条途径将成千上万的物种运往世界各地。我们开发了一种方法来估计繁殖压力（i）识别和量化水族馆出售的鱼类，（ii）确定鱼的主人的行为和处置的做法，（iii）量化的不确定性。我们使用圣劳伦斯航道作为我们的模型系统。只有一个nonestablished种（Tanichthys albonubes，每年117）的繁殖压力和环境的耐受性可能入侵这一地区。然而，总体而言，每年仅从蒙特利尔（加拿大魁北克）释放的鱼类就超过10 000条。所观察到的繁殖压力的含义是，水族馆贸易应该是一个非常重要的途径，在其他温暖的栖息地，应明确评估。每个物种引入的数量的知识将有助于种群模型估计建立的概率。
Introduced species can cause economic and environmental harm. Researchers have developed risk assessment models for exotic species based on biological characteristics. However, few have quantified propagule pressure despite its relevance for establishment. Both are needed to identify invasion risk. We focused on fishes introduced via the aquarium trade, because this pathway transports thousands of species throughout the world. We developed an approach to estimate propagule pressure by (i) identifying and quantifying aquarium fishes sold, (ii) determining fish owner behavior and disposal practices, and (iii)quantifying uncertainty. We used the St. Lawrence Seaway as our model system. Only one nonestablished species (Tanichthys albonubes, 117 per year) had the propagule pressure and environmental tolerances to likely invade this region. However, overall, more than 10 000 fishes were released annually from Montreal (Quebec, Canada) alone. The implication of the observed propagule pressures is that the aquarium trade should be a very important pathway in other warmer habitats and should be explicitly assessed. Knowledge of the numbers introduced of each species will be useful for population models to estimate the probability of establishment.