Tropodiaptomus lateralis Kiefer, 1932 (Copepoda: Calanoida) in Oguta Lake, southeastern Nigeria

Tropodiaptomus lateralis is the dominant crustacean zooplankter of lake Oguta, in the Lower Niger delta of Nigeria. A redescription, will illustrations is given. Its apparently rare occurrence elsewhere in the River Niger system is discussed. Biotic (fish predation pressure), as well as abiotic (low conductivity, low turbidity) factors seem to be involved. © 1992 Kluwer Academic Publishers.