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首页> 外文OA文献 >Biomineralization changes with food supply confer juvenile scallops (Argopecten purpuratus) resistance to ocean acidification, supplement to: Ramajo, L; Marba, Núria; Prado, Luis; Peron, Sophie; Lardies, Marco A; Rodriguez-Navarro, Alejandro; Vargas, C A; Lagos, Nelson A; Duarte, Carlos M (2016): Biomineralization changes with food supply confer juvenile scallops (Argopecten purpuratus) resistance to ocean acidification. Global Change Biology, 22(6), 2025-2037
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Biomineralization changes with food supply confer juvenile scallops (Argopecten purpuratus) resistance to ocean acidification, supplement to: Ramajo, L; Marba, Núria; Prado, Luis; Peron, Sophie; Lardies, Marco A; Rodriguez-Navarro, Alejandro; Vargas, C A; Lagos, Nelson A; Duarte, Carlos M (2016): Biomineralization changes with food supply confer juvenile scallops (Argopecten purpuratus) resistance to ocean acidification. Global Change Biology, 22(6), 2025-2037

机译：食物供应的生物矿化变化赋予了扇贝（Argopecten purpuratus）对海洋酸化的抵抗力，补充至：Ramajo，L;努里亚州马尔巴；路易斯·普拉多；苏珊·佩隆；拉迪斯，马可·A； Rodriguez-Navarro，亚历杭德罗； Vargas，C A；拉各斯（Nelson A）； Duarte，Carlos M（2016）：随着食物供应的生物矿化变化赋予了少年扇贝（Argopecten purpuratusus）对海洋酸化的抵抗力。全球变化生物学，22（6），2025-2037

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Future ocean acidification (OA) will affect physiological traits of marine species, with calcifying species being particularly vulnerable. As OA entails high energy demands, particularly during the rapid juvenile growth phase, food supply may play a key role in the response of marine organisms to OA. We experimentally evaluated the role of food supply in modulating physiological responses and biomineralization processes in juveniles of the Chilean scallop, Argopecten purpuratus, that were exposed to control (pH 8.0) and low pH (pH 7.6) conditions using three food supply treatments (high, intermediate, and low). We found that pH and food levels had additive effects on the physiological response of the juvenile scallops. Metabolic rates, shell growth, net calcification, and ingestion rates increased significantly at low pH conditions, independent of food. These physiological responses increased significantly in organisms exposed to intermediate and high levels of food supply. Hence, food supply seems to play a major role modulating organismal response by providing the energetic means to bolster the physiological response of OA stress. On the contrary, the relative expression of chitin synthase, a functional molecule for biomineralization, increased significantly in scallops exposed to low food supply and low pH, which resulted in a thicker periostracum enriched with chitin polysaccharides. Under reduced food and low pH conditions, the adaptive organismal response was to trade-off growth for the expression of biomineralization molecules and altering of the organic composition of shell periostracum, suggesting that the future performance of these calcifiers will depend on the trajectories of both OA and food supply. Thus, incorporating a suite of traits and multiple stressors in future studies of the adaptive organismal response may provide key insights on OA impacts on marine calcifiers.
机译：未来的海洋酸化（OA）将影响海洋物种的生理特性，其中钙化物种特别脆弱。由于OA需要大量能量，尤其是在青少年快速成长阶段，因此食品供应可能在海洋生物对OA的反应中起关键作用。我们通过实验评估了食物供应在三种处理食物供应方式（高，高，低，高，低，高，低，低）下对智利扇贝幼虫的扇贝幼体的生理反应和生物矿化过程的作用。中级和低级）。我们发现pH和食物水平对少年扇贝的生理反应具有累加作用。在低pH条件下，与食物无关，代谢率，壳生长，净钙化和摄食率显着增加。在暴露于中度和高水平食物供应的生物体中，这些生理反应显着增加。因此，通过提供有力的手段来增强OA应激的生理反应，食物供应似乎在调节机体反应中起主要作用。相反，甲壳素合酶（一种生物矿化的功能分子）的相对表达在暴露于低食物供应和低pH的扇贝中显着增加，这导致了富含甲壳素多糖的厚骨膜。在食物减少和低pH条件下，适应性有机体反应是权衡生长，以表达生物矿化分子和改变壳骨膜的有机组成，这表明这些钙化剂的未来性能将取决于两种OA的轨迹和食物供应。因此，在适应性有机反应的未来研究中纳入一系列特征和多种应激源可能提供有关OA对海洋钙化剂影响的关键见解。

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