sessile eye

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• eye — (Order Cumacea): Photosensitive organ on dorsal surface of carapace; typically unpaired and positioned on ocular lobe (paired, unpaired) [Stachowitsch, 1992]. (Order Tanaidacea): One of two photosensitive organs on carapace; positioned… …   Crustacea glossary

• sessile — adj. 1 Bot. & Zool. (of a flower, leaf, eye, etc.) attached directly by its base without a stalk or peduncle. 2 fixed in one position; immobile. Phrases and idioms: sessile oak = DURMAST. Etymology: L sessilis f. sedere sess sit …   Useful english dictionary

• compound eye — Array of contiguous ommatidia having common optic nerve trunk; paired [Moore and McCormick, 1969]. Paired array of contiguous ommatidia having common optic nerve trunks [McLaughlin, 1980]. (Order Cladocera): One of two large photosensitive organs …   Crustacea glossary

• 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

• cirripede — ▪ crustacean Introduction       any of the marine crustaceans of the infraclass Cirripedia (subphylum Crustacea). The best known are the barnacles. Adult cirripedes other than barnacles are internal parasites of marine invertebrates such as crabs …   Universalium

• 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

• Barnacle — For other uses, see Barnacle (disambiguation). Barnacles Temporal range: Mid Cambrian–Recent …   Wikipedia

• malacostracan — /mal euh kos treuh keuhn/, adj. 1. belonging or pertaining to the crustacean subclass Malacostraca, which includes the lobsters, shrimps, crabs, etc. n. 2. a malacostracan crustacean. [1825 35; < NL Malacostrac(a) order of crustacea ( < Gk, neut …   Universalium

• Thylacocephala — Taxobox | name = Thylacocephala fossil range = Early Cambrian Late Cretaceous regnum = Animalia phylum = Arthropoda subphylum = Crustacea? classis = Thylacocephala classis authority = Pinna, Arduini, Pesarini and Teruzzi, 1982The Thylacocephala… …   Wikipedia

• Pinguicula moranensis — Taxobox name = Pinguicula moranensis image width = 275px image caption = In habitat in Oaxaca regnum = Plantae divisio = Magnoliophyta classis = Magnoliopsida ordo = Lamiales familia = Lentibulariaceae genus = Pinguicula species = P. moranensis… …   Wikipedia

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium