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(invertebrate zoology)
A larval stage characteristic of many groups of Crustacea; the oval, unsegmented body has three pairs of appendages: uniramous antennules, biramous antennae, and mandibles.



the plankton larva of numerous species of the family Crustacea. The body is unsegmented and has three pairs of appendages. In front of the mouth there are uniramous sensory antennules; in back there are biramous antennae and mandibles for swimming. The nauplius has a median eye. Between the mandibles and the anal opening there is a growth zone, where, as development progresses, the postnauplial segments with appendages develop.

References in periodicals archive ?
RNA-seq reads for each of the six developmental stages (embryo, early nauplius, late nauplius, early copepodite, late copepodite, and adult female) from each year (2011 and 2012), and for each of the three biological replicates at each stage in 2012, were mapped against the reference transcriptome (Lenz et al.
Smaller sensilla are abundant in the interspaces between the larger sensilla and have been figured most often on nauplius stages (Tokioka 1936; Rushton-Mellor and Boxshall 1994).
A somewhat more opaque prolepsis is offered in the catalog notice for Nauplius: Et face saeva / in tua mox Danaos acturus saxa, Caphereu, / Nauplius ("and Nauplius, who would soon drive the Greeks with a savage beacon onto your rocks, Caphareus," 1.
Towards the interior of the estuary the larvae are very small and feed on copepod nauplius larvae.
For pessoi, Sophocles, Nauplius Pyrkaeus, 429 Radt; Palamedes, 479 Radt, with Eustathius, On the Iliad, 228,6.
On the other hand, there must be a minimum egg size below which no viable nauplius larva could be hatched.
Palamedes In Greek mythology, the son of Nauplius, king of Euboea, and a hero of the Trojan War.
Nauplius is a tiny Pyriform or pear-shaped tiny body possessing three pairs of appendages.
Enzyme activity and mRNA expression of proteinases were assayed in Penaeus vannamei during larval development, which consists of 5 nauplius stages, 3 protozoeal stages, 3 mysis stages, and 12 postlarval stages.
SEM observation of the nauplius of Monstrilla hamatapex, new species, from Japan and an example of upgraded descriptive standards for monstrilloid copepods.
Pero informes posteriores afirmaban que el brote estaba limitado a la provincia de El Oro, donde estaba provocando solo perdidas del 10%, o incluso que los finicos camarones infectados eran nauplius larvae importados de Panama (las importacions fueron prohibidas).