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crayfish

(Encyclopedia) crayfish or crawfish, freshwater crustacean smaller than but structurally very similar to its marine relative the lobster, and found in ponds and streams in most parts of the world…

crawfish

(Encyclopedia) crawfish: see crayfish.

DK Earth: Fishing

WHAT IS OVERFISHING? WHAT METHODS ARE USED BY THE FISHING INDUSTRY? FIND OUT MOREFish are an important food, so fishing is a major industry in many countries. However, overfishing has resulted in…

Crustaceans FAQ

Source: National Marine Fisheries Services' Northeast Fisheries Science CenterWhat is the difference between soft and hard shell crabs? They are the same species. A soft-shell crab is one that has…

Port Lavaca

(Encyclopedia) Port LavacaPort Lavacaləvăkˈə [key], city (1990 pop. 10,886), seat of Calhoun co., S Tex., on Lavaca Bay; inc. 1907. A deepwater port of entry, it is a shipping point for an…

crustacean

(Encyclopedia) CE5 Internal anatomy of a female crayfish, representative of the class Crustacea crustaceancrustaceankrŭstāˈshən, primarily aquatic arthropod of the subphylum Crustacea. Most of…

carapace

(Encyclopedia) carapacecarapacekârˈəpās [key], shield, or shell covering, found over all or part of the anterior dorsal portion of an animal. In lobsters, shrimps, crayfish, and crabs, the carapace…

parthenogenesis

(Encyclopedia) parthenogenesisparthenogenesispärˌthənōjĕnˈəsĭs [key] [Gr.,=virgin birth], in biology, a form of reproduction in which the ovum develops into a new individual without fertilization.…

raccoon

(Encyclopedia) raccoon, nocturnal New World mammal of the genus Procyon. The common raccoon of North America, Procyon lotor, also called coon, is found from S Canada to South America, except in parts…

Réaumur, René Antoine Ferchault de

(Encyclopedia) Réaumur, René Antoine Ferchault deRéaumur, René Antoine Ferchault derāˈəmy&oobreve;r, Fr. rənāˈ äNtwänˈ fĕrshōˈ də rāōmürˈ [key], 1683–1757, French physicist and naturalist. He…