CopepodaCrustaceaCladoceraEctoparasitic InfestationsZooplanktonRotiferaBrachyuraFin WhaleFresh WaterDaphniaAmphipodaDecapoda (Crustacea)IsopodaInvertebrate HormonesArthropod ProteinsFish DiseasesMoltingNephropidaeAstacoideaArthropodsPopulation DensityHepatopancreasPopulation DynamicsArtemiaBrazilPalaemonidaePalinuridaeSeasonsHemolymph