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n. pl. nau·pli·i (-plē-ī′)
The free-swimming first stage of the larva of certain crustaceans, having an unsegmented body with three pairs of appendages and a single median eye.

[New Latin, from Nauplius, former genus of crustacean (later discovered to be a larval stage of other genera), from Latin nauplius, paper nautilus, from Greek nauplios, nautilus (probably the pearly nautilus of the Indian Ocean) : naus, nau-, ship; see nāu- in the Appendix of Indo-European roots + plein, to sail, float, swim (the animal being so called because it was thought to sail in its shell like a ship and use its arms as oars); see pleu- in the Appendix of Indo-European roots.]

nau′pli·al (-əl) adj.


n, pl -plii (-plɪˌaɪ)
(Zoology) the larva of many crustaceans, having a rounded unsegmented body with three pairs of limbs
[C19: from Latin: type of shellfish, from Greek Nauplios, one of the sons of Poseidon]


(ˈnɔ pli əs)

n., pl. -pli•i (-pliˌaɪ)
a larval form in many crustaceans, with three pairs of appendages and a single median eye.
[1830–40; < Latin: a kind of shellfish]
nau′pli•al, adj.
References in periodicals archive ?
Unlike the more commonplace, high-resolution, lateral compound eyes of other Crustacea, copepods use naupliar eyes, also referred to as "frontal" or "tri-partite" eyes, for spatial vision (Elofsson, 2006).
There are three naupliar stages, five copepod stages, a pre-adult and adult stage in the life cycle.
The species of Lernaea has nine stages in the life cycle, including three free-living naupliar stages, five copepodid stages, and one adult stage.
c) embrion en estado temprano mostrando los primordios embrionarios (Su) y el vitelo (Vi), d) nauplius en estado temprano de desarrollo; proceso abdominal (Pa); ojo naupliar (On), e), f) y g) nauplius en diferentes estados de desarrollo; antenula (Au), antena (An) y maxila (Ma).
Copepods were classified according to species, developmental stage (copepodites CI-V), and sex (adults); naupliar stages were not separated to species.
El desarrollo de los copepodos incluye el paso por doce estadios larvarios y una metamorfosis de la morfologia naupliar (N6) a la de copepodito (C1).
Naupliar stages of copepods, mostly Eurytemora affinis or Acartia tonsa, were common throughout the sampling area, but were often most abundant near and down-estuary of the salt front.
Estimate of the effects of ultraviolet radiation on the mortality of Artemia franciscana in naupliar and adult stages.
The effect of different nickel and zinc concentrations on Artemia franciscana cyst hatching, naupliar mortality, growth and oxygen consumption were studied in order to determine levels of acute and chronic toxicity.
The microzooplankton size category (<200 [micron]m) is composed of a diverse assemblage, including protozoa (HNF and ciliates), rotifers and naupliar stages of copepods.