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首页> 外文期刊>Ocean & coastal management >Aliens cruising in: Explaining alien fouling macro-invertebrate species numbers on recreational yachts
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Aliens cruising in: Explaining alien fouling macro-invertebrate species numbers on recreational yachts

机译：外星人巡游：在休闲游艇上解释外来污垢的大型无脊椎动物物种数量

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The extent of biofouling on recreational vessels has been used as a proxy for the presence of alien species and has been linked with vessel characteristics. However, the relationship between these factors and alien species numbers has not been examined, despite the importance of this metric for invasive species management. This study assessed physical characteristics, maintenance regimes and travel patterns of yachts and their relationship with the number of macro-invertebrate alien species present on vessels from four South African marinas. Overall, 88% of yachts were fouled with macro-invertebrate alien species. The only factor that influenced alien species numbers in the context of this study was the primary use of yachts, with cruising yachts supporting significantly more alien species than racing yachts. This is likely linked to differences in cleaning regimes, as racers are subject to rigorous and frequent cleaning. These findings suggest that cruising vessels may play a key role in the intra-regional transfer of alien species and that racing yachts likely pose a lower biosecurity threat.
机译：休闲船上的生物污损程度已被用来替代外来物种的存在，并与船只的特性有关。但是，尽管该指标对于入侵物种管理很重要，但尚未检查这些因素与外来物种数量之间的关系。这项研究评估了游艇的物理特性，维护方式和旅行方式，以及它们与来自四艘南非游艇码头的大型无脊椎动物外来物种数量的关系。总体而言，有88％的游艇被大型无脊椎动物外来物种污染。在本研究中，影响外来物种数量的唯一因素是游艇的主要用途，巡航游艇所支撑的外来物种比赛车游艇多得多。这可能与清洁制度的差异有关，因为赛车手会受到严格且频繁的清洁。这些发现表明，巡游船只可能在外来物种的区域内转移中发挥关键作用，而赛车游艇可能对生物安全构成较低的威胁。

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