- naupliar eye
- Relatively simple, median eye, typically consisting of 3 photoreceptor units (up to 7 in taxa where it persists in the adult) and first appearing in the nauplius larval stage. Thought to be a primitive (defining) feature of the Crustacea; it is secondarily reduced or lost in many taxa [Brusca and Brusca, 2002].Unpaired median eye found in naupliar larval stages and commonly in more mature stages as well. (Syn. median eye) [Moore and McCormick, 1969].Unpaired median eye, common in nauplii and many adult crustaceans; structure simple, consisting of 1 to few light-sensitive cells. (Syn. median eye) [McLaughlin, 1980].(Order Cladocera):Small median photosensitive organ located ventrally on head between mouth and compound eye. (Syn. median eye, ocelus) [Stachowitsch, 1992].(Order Notostraca):Small median photosensitive organ located in front of compound eyes on sloping anterior of carapace; consists of four cups. (Syn. median eye) [Stachowitsch, 1992].(Order Diplostraca):Small median photosensitive organ located ventrally on rostrum of head. (See also compound eye). (Syn. median eye) [Stachowitsch, 1992].(Order Anostraca):Unpaired median photosensitive organ located somewhat posteriorly to antennules on anterior part of head; relatively small, consisting of three (two lateral, one ventral) cups. (See also compound eye) [Stachowitsch, 1992].(Subclass Mystacocarida):Ocellus [Stachowitsch, 1992].(Class Ostracoda):Single medial anterior eye, normally composed of 3 eye cups, has reflecting tapetal layer. (Syn. medial eye) [Cohen, Peterson, and Maddocks, in press].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.
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naupliar eye — see nauplius eye … Dictionary of invertebrate zoology
median eye — See: nauplius eye [McLaughlin, 1980]. Sessile unpaired eye of nauplius larva which persists in some adults. (Syn. naupliar eye) [Moore and McCormick, 1969]. Term sometimes used to refer to a naupliar eye; see naupliar eye [Brusca and Brusca,… … Crustacea glossary
nauplius eye — (ARTHROPODA: Crustacea) In nauplii and many adults, an unpaired median eye consisting of 1 to few light sensitive cells; median eye; naupliar eye … Dictionary of invertebrate zoology
Crustacean larvae — Larval and adult prawns Nauplius larva Adult Penaeus monodon … Wikipedia
nauplius — Characteristic crustacean larval stage bearing median simple (naupliar) eye and 3 pairs of setose, functional appendages destined to become the antennules, antennae and mandibles [Brusca and Brusca, 2002]. Early larval stage having only… … Crustacea glossary
Triops longicaudatus — Taxobox name = Triops longicaudatus fossil range = Triassic Recent image width = 250px status = LC status system = IUCN3.1 regnum = Animalia phylum = Arthropoda subphylum = Crustacea classis = Branchiopoda infraclassis = Calamanostraca ordo =… … Wikipedia
crustacean — /kru stay sheuhn/, n. 1. any chiefly aquatic arthropod of the class Crustacea, typically having the body covered with a hard shell or crust, including the lobsters, shrimps, crabs, barnacles, and wood lice. adj. 2. belonging or pertaining to the… … Universalium
ocellus — Little eye, distinct from main organ of vision [Williams, 1984]. Simnple single eye or eye spot; common in some branchiopods and copepods. See: naupliar eye [McLaughlin, 1980]. Unpaired median eye, common in some branchiopods (e.g., Notostraca)… … Crustacea glossary
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