Life-history and thermal tolerance traits display different thermal plasticities and relationships with temperature in the marine polychaete Ophryotrocha labronica La Greca and Bacci (Dorvilleidae)

► The phenotypic plasticity of life history and thermal tolerance is investigated. ► They show respectively a non-monotonic and monotonic trend. ► The thermal history of the individuals influences the life-history patterns. ► Cold tolerance is a more plastic trait than heat tolerance. ► A functional dependence to temperature and no evolutionary trade-offs are observed.