Mitochondrial and nuclear sequences for phylogenetic analysis of three cephalopod species, northern Gulf of Mexico, May 2015 to May 2017

The midwater column contains a wide diversity of cephalopods in the northern Gulf of Mexico. DNA sequence data (barcodes) have become a key tool to discover hidden biodiversity. We generated mitochondrial DNA barcode datasets based on the Cytochrome c oxidase I (COI), 16s, and 28s genes from cephalopods. These data were analyzed using phylogenetic methods to examine possible connectivity of 3 species (Vampyroteuthis infernalis, Pyroteuthis margaritifera, and Cranchia scabra) between two basins, the Gulf of Mexico and the area surrounding Bear Seamount in the northwestern Atlantic Ocean. These datasets were generated from cephalopods collected in the northern Gulf of Mexico on cruises DP01 through DP05 from May 2015 to May 2017.

墨西哥湾北部中层水体中分布着种类丰富的头足类。DNA序列数据（即DNA条形码，DNA barcodes）已成为发掘隐匿生物多样性的关键工具。本研究针对头足类样本的细胞色素c氧化酶亚基I (Cytochrome c oxidase I, COI)、16S及28S基因，构建了线粒体DNA条形码数据集。本研究采用系统发育分析方法对上述数据集进行解析，以探究墨西哥湾与西北大西洋熊海山 (Bear Seamount) 周边海域两个盆地间3个物种——幽灵蛸 (Vampyroteuthis infernalis)、珠光火鱿 (Pyroteuthis margaritifera) 及糙枪乌贼 (Cranchia scabra)——的种群连通性。本数据集的样本来源于2015年5月至2017年5月期间，在墨西哥湾北部执行的DP01至DP05号科考航次所采集的头足类。