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首页> 外文期刊>Conservation Biology >The use of environmental DNA in invasive species surveillance of the Great Lakes commercial bait trade
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The use of environmental DNA in invasive species surveillance of the Great Lakes commercial bait trade

机译：在大湖商业诱饵贸易的入侵物种监视中使用环境DNA

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Over 180 non-native species have been introduced in the Laurentian Great Lakes region, many posing threats to native species and ecosystem functioning. One potential pathway for introductions is the commercial bait trade; unknowing or unconcerned anglers commonly release unused bait into aquatic systems. Previous surveillance efforts of this pathway relied on visual inspection of bait stocks in retail shops, which can be time and cost prohibitive and requires a trained individual that can rapidly and accurately identify cryptic species. Environmental DNA (eDNA) surveillance, a molecular tool that has been used for surveillance in aquatic environments, can be used to efficiently detect species at low abundances. We collected and analyzed 576 eDNA samples from 525 retail bait shops throughout the Laurentian Great Lake states. We used eDNA techniques to screen samples for multiple aquatic invasive species (AIS) that could be transported in the bait trade, including bighead (Hypophthalmichthys nobilis) and silver carp (H. molitrix), round goby (Neogobius melanostomus), tubenose goby (Proterorhinus marmoratus), Eurasian rudd (Scardinius erythrophthalmus), and goldfish (Carassius auratus). Twenty-seven samples were positive for at least one target species (4.7% of samples), and all target species were found at least once, except bighead carp. Despite current regulations, the bait trade remains a potential pathway for invasive species introductions in the Great Lakes region. Alterations to existing management strategies regarding the collection, transportation, and use of live bait are warranted, including new and updated regulations, to prevent future introductions of invasive species in the Great Lakes via the bait trade. El Uso del ADN Ambiental en la Vigilancia de Especies Invasoras del Mercado de Carnada Comercial de los Grandes Lagos
机译：劳伦大湖地区引进了180多种非本地物种，其中许多对本地物种和生态系统功能构成了威胁。一种潜在的引进途径是商业诱饵贸易。钓鱼者在不知情或不关心的情况下通常会将未使用的诱饵释放到水生系统中。该途径以前的监视工作依靠肉眼检查零售商店中的诱饵库存，这可能会浪费时间和成本，并且需要训练有素的个人才能迅速而准确地识别隐性物种。环境DNA（eDNA）监视是一种在水生环境中进行监视的分子工具，可用于有效地检测低丰度物种。我们从整个劳伦大湖州的525家零售诱饵商店收集并分析了576种eDNA样本。我们使用eDNA技术筛选了可以在诱饵贸易中运输的多种水生入侵物种（AIS）的样品，包括big鱼（Hypophthalmichthys nobilis）和silver鱼（H. molitrix），round鱼（Neogobius melanostomus），）鱼（Proterorhinus） marmoratus），欧亚陆克力（Scardinius erythrophthalmus）和金鱼（Carassius auratus）。对至少一种目标物种（占样本的4.7％），有27个样品呈阳性，除big鱼外，所有目标物种均至少发现一次。尽管有现行法规，但诱饵贸易仍然是大湖地区引入入侵物种的潜在途径。有必要对有关活饵的收集，运输和使用的现有管理策略进行更改，包括新的和更新的法规，以防止将来通过诱饵贸易将入侵物种引入大湖地区。 El Uso del ADN环境，维吉兰西亚大区种，卡纳达商业区市场，拉各斯大区商业区

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