Decapod

Decapod is a term used to describe a group of crustaceans that have ten legs. The term is derived from the Greek words "deka" meaning ten and "pous" meaning foot. Decapods include some of the most familiar crustaceans such as lobsters, crabs, and shrimp.

Anatomy

Decapods have a hard exoskeleton that protects their body. They have two pairs of antennae, a pair of mandibles, and two pairs of maxillae. The first three pairs of legs are known as maxillipeds, which are used for feeding. The remaining five pairs are walking legs. The first pair of walking legs are often modified into claws, known as chelae.

Classification

Decapods are classified under the order Decapoda, which is further divided into two suborders: Dendrobranchiata and Pleocyemata. Dendrobranchiata includes prawns, while Pleocyemata includes crabs, lobsters, and shrimp.

Habitat and Distribution

Decapods are found in all types of aquatic environments, from fresh water to the deepest parts of the ocean. They are most diverse in tropical regions but can be found in almost every part of the world.

Diet and Behavior

Decapods are primarily omnivores, feeding on a variety of plant and animal matter. Some species are scavengers, feeding on dead animals and organic waste, while others are predators, hunting and capturing their prey.

Reproduction

Most decapods are gonochoric, meaning individuals are either male or female. In most species, the female carries the eggs until they hatch into larvae.

Economic Importance

Many species of decapods are important for human consumption. They are harvested both from the wild and from aquaculture facilities. Some species are also important in the aquarium trade.

Conservation

Some species of decapods are threatened by overfishing, habitat loss, and climate change. Conservation efforts include regulations on fishing, habitat protection, and breeding programs.

Decapod Resources
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