Adapted for invasion? Comparing attachment, drag and dislodgment of native and nonindigenous hull fouling species
Adapted for invasion? Comparing attachment, drag and dislodgment of native and nonindigenous hull fouling species
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适应入侵？
DOI：
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发表时间：
2012
影响因子：
2.9
通讯作者：
P. Martone
中科院分区：
文献类型：
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作者：
C. Clarke Murray;T. Therriault;P. Martone
入侵物种具有独特的特征，使它们能够在入侵过程中导航，以便在新的栖息地建立和传播。成功的船体污损入侵者必须抵抗与其航行相关的物理和生理压力。我们的特点是附着强度和阻力系数的常见污垢物种，以估计所需的速度将它们从船体驱逐。我们假设非土著污损物种将具有生物力学特性，使他们能够保持附着在船体比类似的本地物种更成功。事实上，著名的入侵海鞘柄海鞘既有高附着强度和低阻力系数，其移出速度远高于快速移动的血管。与此相反，本地同源的海鞘具有较低的附着强度和较高的阻力系数。殖民地入侵物种采用了不同的搭便车策略;尽管它们的附着强度较低，但Botrylloides violaceus和Didemnum vexillum的阻力系数较低，使它们能够在速度较慢的船只上运输，如帆船和驳船。入侵物种的生物力学适应性在预测未来的入侵者和在入侵过程的第一个节点告知媒介管理策略方面显示出希望：媒介的运输。
Invasive species possess unique traits that allow them to navigate the invasion process in order to establish and spread in new habitats. Successful hull fouling invaders must resist both physical and physiological stressors associated with their voyage. We characterised attachment strength and drag coefficient of common fouling species in order to estimate the velocity required to dislodge them from boat hulls. We hypothesized nonindigenous fouling species would possess biomechanical properties that enable them to remain attached to hulls more successfully than similar native species. Indeed, the well-known invasive ascidian Styela clava had both high attachment strength and low drag coefficient and its dislodgment velocity was well above that of fast moving vessels. In contrast, the native congener Styela gibbsii had low attachment strength and higher drag coefficient. Colonial invasive species employed a different hitchhiking strategy; despite their low attachment strengths, Botrylloides violaceus and Didemnum vexillum had low drag coefficients allowing them to be transported on slower-moving vessels, such as sailboats and barges. The biomechanical adaptations of invasive species show promise in predicting future invaders and informing vector management strategies at the first node in the invasion process: transport by the vector.