Malate dehydrogenase and tetrazolium oxidase of scyphistomae of Aurelia aurita, Chrysaora quinquecirrha, and Cyanea capillata (Scyphozoa: Semaeostomeae)

1. The malate dehydrogenase (MDH) isozyme patterns of the three most common polyps of Chesapeake Bay (USA) differ in number and in electrophoretic mobilities:Aurelia aurita: 4 bands (Rm=0.29, 0.33, 0.39, 0.43);Chrysaora quinquecirrha: 5 bands (Rm=0.21, 0.22, 0.40, 0.53, 0.54);Cyanea capillata: 1 band (Rm=0.50) or sometimes a second (Rm=0.25). 2. The tetrazolium oxidase (TO) isozyme patterns differ as follows:Aurelia aurita: 2 bands (Rm=0.39, 0.51);Chrysaora quinquecirrha: 1 band (Rm=0.58);Cyanea capillata: 1 band (Rm=0.39). 3. Isozyme components of MDH and TO, either singly or in combination, may be used to distinguish the common Chesapeake Bay polyps of unknown origin.