Phospholipid fatty acids from pyrosome carcasses collected during SONNE cruise SO242/2@en

During RV SONNE cruise SO242/2 (September 2015) to the DISCOL site in the Peru Basin (SE Pacific), pyrosome carcasses were at the seafloor. Aboard, these carcasses were stored frozen and in the lab on land, they were freeze-dried and ground to fine powder. Phospholipid-derived fatty acids (PLFAs) in pyrosome tissue were extracted following the Bligh and Dyer method and their isotopic compositions and concentrations were measured on a gas chromatograph coupled with an isotopic ratio mass spectrometer (EA-c-IRMS).2015年9月，在执行前往东南太平洋秘鲁盆地DISCOL站位（DISCOL site）的“松内号科考船（RV SONNE）”航次SO242/2期间，海底采集到火体虫（pyrosome）尸骸。科考船上将该类尸骸冷冻保存，运回陆地实验室后经冷冻干燥处理并研磨为细粉。依照布莱-戴尔法（Bligh and Dyer method）提取火体虫组织中的磷脂衍生脂肪酸（PLFAs），并通过气相色谱-同位素比值质谱联用仪（EA-c-IRMS）测定其同位素组成与浓度。