Decapoda (Crustacea)BrachyuraCrustaceaAnomuraPalaemonidaeNephropidaePalinuridaeAstacoideaIsopodaNorth SeaHemolymphMoltingHydrothermal VentsHepatopancreasInvertebrate HormonesEctoparasitic InfestationsArthropod ProteinsFlatfishesPacific OceanReceptors, Serotonin, 5-HT2EcosystemGanglia, InvertebrateNeuropeptidesSeawaterPopulation DynamicsSpecies SpecificityPhylogenySpectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization