Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai 201306, China; State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, China.
Department of Biology, Norwegian University of Science and Technology, Høgskoleringen 5, 7491 Trondheim, Norway.
Mar Pollut Bull. 2019 Aug;145:118-125. doi: 10.1016/j.marpolbul.2019.05.040. Epub 2019 May 23.
The effects of short-term (7 days) experimental ocean acidification (-0.4 pH units) and warming (+5 °C) on anti-predator defenses of two sympatric Mytilus species from China, M. coruscus and M. edulis, in the presence and absence of predator cues were investigated. Results suggested species-specific independent negative effects of acidification and warming on the number and weight of byssal threads, the force of thread attachment, and total thread plaque area. Similar negative effects were observed for clustering behaviour, with acidification and warming independently increasing the number of solitary individuals and decreasing the percentage of mussels in clusters. Acidification effects on byssus were strongly exacerbated when predators were present. Ultimately, this study suggests that short-term exposure to experimental warming and acidification can negatively impact anti-predator defense strategies in mussels with potential ramifications for predator-prey interactions and ecological functioning in systems where mussel beds play a key ecological role.
本研究调查了短期（7 天）实验酸化（-0.4 个 pH 单位）和升温（+5°C）对中国两种贻贝（厚壳贻贝和贻贝）防御捕食者的影响，同时考虑了捕食者线索的存在和缺失情况。结果表明，酸化和升温对贻贝足丝数量和重量、附着强度和总足丝斑块面积具有特异性的独立负面影响。聚类行为也观察到类似的负面影响，酸化和升温分别增加了独居个体的数量，降低了集群中贻贝的比例。当存在捕食者时，酸化对足丝的影响会大大加剧。总之，本研究表明，短期暴露于实验性增温和酸化会对贻贝的防御捕食策略产生负面影响，这可能对具有关键生态作用的贻贝床系统中的捕食者-猎物相互作用和生态功能产生潜在影响。
