Telonicher Marine Laboratory, Humboldt State University, Trinidad, USA; Department of Biological Sciences, Humboldt State University, Arcata, USA.
Telonicher Marine Laboratory, Humboldt State University, Trinidad, USA; Department of Biological Sciences, Humboldt State University, Arcata, USA.
Mar Pollut Bull. 2021 Jul;168:112377. doi: 10.1016/j.marpolbul.2021.112377. Epub 2021 Apr 23.
Ocean acidification (OA) can induce changes in marine organisms and species interactions. We examined OA effects on intertidal macroalgal growth, palatability, and consumption by a specialist crab (Pugettia producta) and a generalist snail (Tegula funebralis) herbivore. Moderate increases in pCO increased algal growth in most species, but effects of pCO on C:N and phenolic content varied by species. Elevated pCO had no effect on algal acceptability to herbivores, but did affect their preference ranks. Under elevated pCO, electivity for a preferred kelp (Egregia menziesii) and preference rankings among algal species strengthened for both P. producta and T. funebralis, attributable to resilience of E. menziesii in elevated pCO and to changes in palatability among less-preferred species. Preferred algae may therefore grow more under moderate pCO increases in the future, but their appeal to herbivores may be strengthened by associated shifts in nutritional quality and defensive compounds in other species.
海洋酸化（OA）会引起海洋生物和物种相互作用的变化。我们研究了 OA 对潮间带大型藻类生长、可食性以及 specialist crab（Pugettia producta）和 generalist snail（Tegula funebralis）草食动物摄食的影响。pCO 的适度增加会增加大多数物种的藻类生长，但 pCO 对 C:N 和酚类含量的影响因物种而异。升高的 pCO 对食草动物对藻类的可接受性没有影响，但确实影响了它们的偏好等级。在高 pCO 下，P. producta 和 T. funebralis 对首选海藻（Egregia menziesii）的选择性和对藻类物种的偏好等级都有所增强，这归因于 E. menziesii 在高 pCO 下的恢复力和较不受欢迎物种的可食性变化。因此，在未来适度的 pCO 增加下，首选藻类可能会生长得更多，但由于其他物种的营养质量和防御化合物的相关变化，它们对食草动物的吸引力可能会增强。
