Anthropogenic CO₂ emissions have led to ocean acidification and a rise in the temperature. The present study evaluates the effects of temperature (10, 15 and 20 °C) and pCO₂ (400 and 1200 μatm) on the early development and oxygen consumption rate (OCR) of the sea louse Caligus rogercresseyi. Only temperature has an effect on the hatching and development times of nauplius I. But both factors affected the development time of nauplius II (<temperature = longer development time). Copepodid survival time was also affected by temperature and pCO₂, at 10 °C and 400 μatm, survival was 30 and 44% longer than at 15 and 20 °C. OCRs were impacted by temperature but not by pCO₂. In all treatments, OCR was lower for nauplius II than for the copepodid. Our results show the need to further evaluate the effects of a combination of environmental drivers on the performance of C. rogercresseyi, in a changing and uncertain future.

人为的CO ₂排放导致海洋酸化和温度升高。本研究评估温度（10、15和20°C）和p CO ₂（400和1200μatm）对海虱Caligus rogercresseyi的早期发育和耗氧率（OCR）的影响。只有温度对无节幼体I的孵化和发育时间有影响。但是，这两个因素都会影响无节幼体II的发育时间（<温度=较长的发育时间）。pe足类动物的生存时间也受温度和p CO _2的影响，在10°C和400μatm时，生存时间分别比在15和20°C时长30％和44％。OCR受温度影响，但不受p影响CO ₂。在所有治疗中，无节幼体II的OCR均比同足动物低。我们的结果表明，在不断变化和不确定的未来中，有必要进一步评估环境驱动因素组合对罗氏梭菌性能的影响。