Predation data of tethered Nucella lamellosa in the presence of predator Pisaster ochraceus within laboratory mesocosms at Bodega Marine Lab in 2019

To examine the impacts of fear removal on the strength of trophic cascades, we measured predation rates on tethered and untethered Nucella lamellosa in the presence of Pisaster ochraceus. Data from these experiments were used to estimate predation rates on Nucella that did not display behavioral fear response. Similar predation trials were conducted with morphologically induced Nucella to estimate the effect of morphological defenses on predation rates. The experiment was conducted within laboratory mesocosms at Bodega Marine Lab in 2019.

为探究恐惧消除对营养级联强度的影响，本研究在赭色海星（Pisaster ochraceus）存在的条件下，测定了栓系与非栓系皱纹荔枝螺（Nucella lamellosa）的捕食率。利用上述实验数据，我们估算了未表现出行为性恐惧反应的皱纹荔枝螺的捕食率。此外，我们还对经形态诱导的皱纹荔枝螺开展了类似的捕食实验，以评估形态防御对捕食率的影响。本实验于2019年在博德加海洋实验室（Bodega Marine Lab）的实验室中型实验生态系（laboratory mesocosms）中完成。