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Close up of the head of a live lobster. There is a scientific debate which questions whether crustaceans experience pain.It is a complex mental state, with a distinct perceptual quality but also associated with suffering, which is an emotional state.
The shrimp Palaemon serratus of the infraorder Caridea. A shrimp (pl.: shrimp or shrimps ()) is a crustacean (a form of shellfish) with an elongated body and a primarily swimming mode of locomotion – typically belonging to the Caridea or Dendrobranchiata of the order Decapoda, although some crustaceans outside of this order are also referred to as "shrimp".
The decapod (crustaceans, such as a crab, lobster, shrimp or prawn) is made up of 20 body segments grouped into two main body parts: the cephalothorax and the pleon . [1] [2] Each segment may possess one pair of appendages, although in various groups these may be reduced or missing. They are, from head to tail:
The number and variety of appendages in different crustaceans may be partly responsible for the group's success. [ 14 ] Crustacean appendages are typically biramous , meaning they are divided into two parts; this includes the second pair of antennae, but not the first, which is usually uniramous , the exception being in the Class Malacostraca ...
With over 450 species of mantis shrimp worldwide, they are a common sight seen in a variety of different colors and can grow anywhere from 12 to 15 inches in length.
Animated representation of lobstering. The caridoid escape reaction, also known as lobstering or tail-flipping, is an innate escape behavior in marine and freshwater eucarid crustaceans such as lobsters, krill, shrimp and crayfish.
Whales have spindle cells in greater numbers and are maintained for twice as long as humans. [32] The exact function of spindle cells in whale brains is still not understood, but Hof and Van Der Gucht believe that they act as some sort of "high-speed connections that fast-track information to and from other parts of the cortex". [32]
A heavy downpour and flooding have left 70,000 people stranded in thick mud and being told to conserve their food by organisers. Finally, false claims of an Ebola outbreak circled the camp had to ...