title: Stress physiology and weapon integrity of intertidal mantis shrimp under future ocean conditions.
abstract: Calcified marine organisms typically experience increased oxidative stress and changes in mineralization in response to ocean acidification and warming conditions. These effects could hinder the potency of animal weapons, such as the mantis shrimp's raptorial appendage. The mechanical properties of this calcified weapon enable extremely powerful punches to be delivered to prey and aggressors. We examined oxidative stress and exoskeleton structure, mineral content, and mechanical properties of the raptorial appendage and the carapace under long-term ocean acidification and warming conditions. The predatory appendage had significantly higher % Mg under ocean acidification conditions, while oxidative stress levels as well as the % Ca and mechanical properties of the appendage remained unchanged. Thus, mantis shrimp tolerate expanded ranges of pH and temperature without experiencing oxidative stress or functional changes to their weapons. Our findings suggest that these powerful predators will not be hindered under future ocean conditions.
authors.affiliation: Scripps Institution of Oceanography, Marine Biology Research Division, University of California at San Diego, La Jolla, CA 92093 USA.
authors.forename: Maya S
authors.initials: MS
authors.lastname: deVries
authors.affiliation: Scripps Institution of Oceanography, Marine Biology Research Division, University of California at San Diego, La Jolla, CA 92093 USA.
authors.forename: Summer J
authors.initials: SJ
authors.lastname: Webb
authors.affiliation: Scripps Institution of Oceanography, Marine Biology Research Division, University of California at San Diego, La Jolla, CA 92093 USA.
authors.forename: Jenny
authors.initials: J
authors.lastname: Tu
authors.affiliation: Department of Bioengineering, University of California at San Diego, La Jolla, CA 92093, USA.
authors.forename: Esther
authors.initials: E
authors.lastname: Cory
authors.affiliation: Scripps Institution of Oceanography, Marine Biology Research Division, University of California at San Diego, La Jolla, CA 92093 USA.
authors.forename: Victoria
authors.initials: V
authors.lastname: Morgan
authors.affiliation: Department of Bioengineering, University of California at San Diego, La Jolla, CA 92093, USA.
authors.forename: Robert L
authors.initials: RL
authors.lastname: Sah
authors.affiliation: Scripps Institution of Oceanography, Marine Biology Research Division, University of California at San Diego, La Jolla, CA 92093 USA.
authors.forename: Dimitri D
authors.initials: DD
authors.lastname: Deheyn
authors.affiliation: Scripps Institution of Oceanography, Marine Biology Research Division, University of California at San Diego, La Jolla, CA 92093 USA.
authors.forename: Jennifer R A
authors.initials: JR
authors.lastname: Taylor
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D003445:Crustacea / Q000033:anatomy & histology / Q000254:growth & development / Q000502:physiology* / Q000648:ultrastructure; D034582:Integumentary System / Q000033:anatomy & histology / Q000502:physiology; D008903:Minerals / Q000032:analysis; D018978:Molting; D009792:Oceans and Seas; D018384:Oxidative Stress; D013312:Stress, Physiological; D014872:Water Movements; D055114:X-Ray Microtomography
chemical_list: D008903:Minerals