A phylogenomic look into the systematics of oceanic squids (order Oegopsida)

Abstract Oceanic squids of the order Oegopsida are ecologically and economically important members pelagic environment. They most diverse group cephalopods, with 24 families that divergent morphologically. Despite their importance, knowledge phylogenetic relationships among oegopsids is less than neritic cephalopods. Here, we provide complete mitogenomes nuclear 18S 28S ribosomal genes for 35 selected oceanic squids, which were generated using genome skimming. We performed maximum likelihood Bayesian inference analyses included 21 oegopsid families. In our analyses, architeuthid, chiroteuthid enoploteuthid family groups, have been proposed previously based on morphological natural history characteristics, retrieved as monophyletic. The morphologically Cranchiidae formed a well-supported clade Ommastrephidae Thysanoteuthidae, unique mitochondrial gene order. Lycoteuthidae was revealed paraphyletic contained Pyroteuthidae. Thus, two lycoteuthid subfamilies herein elevated to level, increasing number squid 25. describe diversity evolutionary trends accurately, superfamilies Architeuthoidea, Chiroteuthoidea, Cranchioidea Enoploteuthoidea resurrected from literature, Cycloteuthoidea, Octopoteuthoidea Pholidoteuthoidea proposed. positions Gonatidae, Histioteuthidae Onychoteuthidae not stable in assigned superfamily. This study supports utility skimming solve squids.