Science, Space and Technology News 2023
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Life cycle of coral with crown-of-thorns starfish. Beginning with healthy coral, heatwave events induce coral bleaching, causing coral death and algal colonization. Corals then collapse and create rubble habitat for juvenile crown-of-thorns, which can tolerate the thermal stress and build up in numbers until the reef regrows and the juveniles emerge to eat the new coral.
“Juveniles might well benefit from warming waters. The increase in the amount of their rubble habitat, generated by coral bleaching and mortality, allows their numbers to build over time.”The crown-of-thorns starfish is nature’s ultimate coral predator, with a circle of life perfectly adapted to warming waters.
“The heat resistance and potential for the juveniles to gradually build up in the reef infrastructure in coral rubble over years might be a phenomenon contributing to the initiation of adult crown-of-thorns starfish outbreaks,” said Matt Clements, PhD student and co-author of the study.
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