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Type species. Pomoxis annularis. Rafinesque, 1818 [1] Synonyms [2] Hyperistius Gill, 1864: Crappies (/ ˈkrɒpi, ˈkræpi /) [3][4] are two species of North American freshwater fish of the genus Pomoxis in the family Centrarchidae (sunfishes). Both species of crappies are popular game fish among recreational anglers.
The white crappie is a deep-bodied fish with a flattened body, or a depth that is one-third of the length of the fish. White crappies have spinous rays and ctenoid fish scales found in advanced teleosts. The exposed part of the scale has tiny tooth-like projections (cteni).
Black crappie. The black crappie (Pomoxis nigromaculatus) is a freshwater fish found in North America, one of the two types of crappies. It is very similar to the white crappie (P. annularis) in size, shape, and habits, except that it is darker, with a pattern of black spots. Alternate names for the species include calico bass, speck, speckled ...
Despite the great potential complexity and diversity of biological networks, all first-order network behavior generalizes to one of four possible input-output motifs: hyperbolic or Michaelis–Menten, ultra-sensitive, bistable, and bistable irreversible (a bistability where negative and therefore biologically impossible input is needed to return from a state of high output).
Ecology, evolution, and paleontology. Unsolved problems relating to the interactions between organisms and their distribution in the environment include: Paradox of the plankton. The high diversity of phytoplankton seems to violate the competitive exclusion principle. Ediacaran biota.
Carp. 1913 illustration of Cyprinus carpio, better known as the common carp. Common carp in Lake Minnetonka, Minnesota. The term carp (pl.: carp) is a generic common name for numerous species of freshwater fish from the family Cyprinidae, a very large clade of ray-finned fish mostly native to Eurasia. While carp are prized quarries and are ...
The cell is the basic structural and functional unit of all forms of life. Every cell consists of cytoplasm enclosed within a membrane; many cells contain organelles, each with a specific function. The term comes from the Latin word cellula meaning 'small room'. Most cells are only visible under a microscope.
Fox led a team of researchers that recently uncovered a stunning evolutionary clue as to why it's so common for women to take on caregiving roles. The team's 15-year longitudinal study, published ...