Phospholipids of marine worms, mollusks and arthropods
The phospholipid composition of organs and tissues was investigated in representatives of five phyla of marine invertebrates: Annelida <i>(Chaetopterus variopedatus, Serpula vermicularis)</i>, Echiuroidea <i>(Urechis unicinctus)</i>, Sipunculoidea <i>(Phascolosoma japonicum),</i> Mollusca (Gastropoda - <i>Tectonatica janthostoma, Neptunea polycostata</i>; Bivalvia -<i> Mactra sulcataria, Peronidia venuloza</i>, <i>Mizuhopecten yessoensis, Crenomytilus grayanus;</i> Cephalopoda - <i>Octopus conispadiceus, Todarodes pacificus)</i>, and Arthropoda <i>(Paralythodes camtschatica</i>, <i>Erimacrus isenbekii, Hemigrapsus sanguineus</i>, <i>Pinixa rathbunii)</i>. The specificity of phospholipid distribution was shown to be related to the taxonomic position of marine invertebrates and functional properties of their organs and tissues. In Echiuroidea, Sipunculoidea, and Arthropoda, ceramide aminoethylphosphonate was only found in the digestive organs, suggesting its exogenous origin.