Cyclopoid
Guides
Acanthocyclops
Acanthocyclops is a genus of freshwater copepod crustaceans in the family Cyclopidae, originally described by Friedrich Kiefer in 1927 as a subgenus of Cyclops. Species within this genus inhabit diverse aquatic environments ranging from temporary ponds to large permanent lakes. The genus has been validated through ecological studies demonstrating distinct habitat preferences and life history strategies among closely related species.
Diacyclops
Diacyclops is a genus of cyclopoid copepods in the family Cyclopidae containing over 120 described species. Species occupy diverse aquatic habitats including freshwater lakes, wetlands, rivers, and groundwater systems. Some species are planktonic while others are benthic or stygobiontic. The genus shows broad salinity tolerance, with at least one species thriving in brackish conditions up to 5 ppt. Diacyclops species serve as prey for fish and are sensitive indicators of environmental contaminants.
Diacyclops thomasi
Diacyclops thomasi is a cyclopoid copepod species in the family Cyclopidae, first described by Forbes in 1882. The species exhibits a distinctive life cycle involving summer diapause with whole-body encystment at the copepodid IV stage. During encystment, the organism undergoes profound metabolic depression and ultrastructural reorganization of its digestive tract, including transformation of midgut epithelial cells and accumulation of lipid-rich lacunae.