DataSheet2_Biomechanical Characterization of Scallop Shells Exposed to Ocean Acidification and Warming.pdf

• Main Authors: Aldo Abarca-Ortega (11975411), Estefano Muñoz-Moya (11975414), Matías Pacheco Alarcón (11975417), Claudio M. García-Herrera (9621173), Diego J. Celentano (11975420), Nelson A. Lagos (7282127), Marco A. Lardies (11975423)
• Format: Dataset
• Language: unknown
• Published: 2022
• Subjects: Biotechnology; Biological Engineering; Genetic Engineering; Biomarkers; Biomaterials; Biomechanical Engineering; Biomedical Engineering not elsewhere classified; Synthetic Biology; Agricultural Marine Biotechnology; Bioremediation; Bioprocessing; Bioproduction and Bioproducts; Industrial Biotechnology Diagnostics (incl. Biosensors); Industrial Microbiology (incl. Biofeedstocks); Industrial Molecular Engineering of Nucleic Acids and Proteins; Industrial Biotechnology not elsewhere classified; Medical Biotechnology Diagnostics (incl. Biosensors); Medical Molecular Engineering of Nucleic Acids and Proteins; Regenerative Medicine (incl. Stem Cells and Tissue Engineering); Medical Biotechnology not elsewhere classified; biomechanics; bivalves; elastic anisotropy; mechanical properties; FEA; Ocean acidification
• Online Access: https://doi.org/10.3389/fbioe.2021.813537.s002

Increased carbon dioxide levels (CO 2 ) in the atmosphere triggered a cascade of physical and chemical changes in the ocean surface. Marine organisms producing carbonate shells are regarded as vulnerable to these physical (warming), and chemical (acidification) changes occurring in the oceans. In the last decade, the aquaculture production of the bivalve scallop Argopecten purpuratus (AP) showed declined trends along the Chilean coast. These negative trends have been ascribed to ecophysiological and biomineralization constraints in shell carbonate production. This work experimentally characterizes the biomechanical response of AP scallop shells subjected to climate change scenarios (acidification and warming) via quasi-static tensile and bending tests. The experimental results indicate the adaptation of mechanical properties to hostile growth scenarios in terms of temperature and water acidification. In addition, the mechanical response of the AP subjected to control climate conditions was analyzed with finite element simulations including an anisotropic elastic constitutive model for a two-fold purpose: Firstly, to calibrate the material model parameters using the tensile test curves in two mutually perpendicular directions (representative of the mechanical behavior of the material). Secondly, to validate this characterization procedure in predicting the material’s behavior in two mechanical tests.