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nauplius

nauplius

1 9.9
A very small first young stage of sea animals like shrimp or crabs
  • noun
  • /ˈnɔːpliəs/
  • Specialized
: nauplio
  • Barnacles, for example, first develop in the plankton as feeding nauplius larvae but eventually metamorphose to a nonfeeding, terminal larval stage, the cyprid (Figure 3).

Examples

  • The nauplius is the first larval form of shrimp, characterized by its simple body and limited limbs.

  • The sixth stage nauplius metamorphoses into a nonfeeding cyprid larva, which usually metamorphoses into adult form and habitat only after encountering other barnacles of its own species.

    Academic text (1998)
  • (a) Adult barnacles on an exposed intertidal rock and (b) the planktonic nauplius stage of a barnacle.

    Academic text (2009)
  • During their life cycle, many crustaceans begin as a nauplius, a tiny larva that swims in the ocean.

  • After hatching, the nauplius stage of a crab develops into more complex forms as it grows.

Surface Forms

nauplius singular
nauplii plural

Etymology

The word nauplius comes from a Greek root naus meaning 'ship', the same root in nautical and navy. A helpful image is a 'little sailor' because a nauplius is the tiny, swimming first stage of shrimp and crabs.