What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
noun
ZoologyA minute branchiopod crustacean of the order "Cladocera" , which includes the water fleas.
- ‘Examples of animals in the P. spathula diet are copepods, cladocerans such Daphnia pulex, and ephemeropteran nymphs.’
- ‘The cladocerans are excellent osmoregulators, occurring in freshwater to hypersaline environments.’
- ‘Adult land-locked fish eat mostly zooplankton, especially larger varieties such as copepods, cladocerans, mysids, and ostracods.’
- ‘The carapace of cladocerans covers the throrax/abdomen but not the head, and is folded down the midline giving them a bivalved appearance.’
- ‘Suspension-feeding zooplankton include rotifers, copepods, and cladocerans, with the latter constituting the major grazers in most small freshwater lakes.’
adjective
ZoologyRelating to or denoting cladocerans.
- ‘The bosminid-dominated cladoceran population uses both the cyanobacterial- and algal-derived C in approximately equal shares.’
- ‘The predatory cladoceran Cercopagis pengoi has extended its range over the past decade from the Ponto-Caspian basin into the Baltic Sea and the Laurentian Great Lakes.’
- ‘Egg size, the zoological counterpart of seed size, has not been nearly as well studied, but is known to correlate positively with genome size in cladoceran crustaceans and plethodontid salamanders.’
- ‘The predatory impacts of Cercopagis pengoi, a planktivorous cladoceran were assessed by examining patterns in the distribution and population dynamics of macrozooplankton.’
- ‘Two current areas of research promise to enhance developmental studies on cladoceran hemoglobins, however.’
