Sex-specific physiological responses and traits (metabolic rates, upper thermal limit, length, and dry weight) of the marine calanoid copepod Acartia tonsa under combined exposure to hypoxia and marine heatwave events

Specimens of the marine calanoid copepod Acartia tonsa were exposed for five days under laboratory conditions to the isolated or combined effects of hypoxia and a marine heatwave event to test for their sex-specific life-history and physiological responses to these stressors. Four treatments were used: control (C: 18 °C, 100 % O₂ sat.), hypoxia (H: 18 °C, 35 % O₂ sat.), marine heatwave (MHW: 25 °C, 100 % O₂ sat.) and combined conditions (HMHW: 25 °C, 35 % O₂ sat.). This dataset compiles all morphological and physiological measurements, namely routine metabolic oxygen consumption rates (µmol h⁻¹ and µmol mg⁻¹ h⁻¹), upper thermal limit (°C) as well as length (mm) and dry weight (µg) following the five-day laboratory exposure experiment.