antennular region

Online Dictionary of Invertebrate Zoology. . 2005.

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  • antennule — First cephalic appendage, usually with peduncle of three articles and two multiarticulate flagella (sometimes antenna 1) [Poore, 2004]. First pair of cephalic appendages (antenna 1) [Holdich and Jones, 1983]. First pair of feelers, or antennae… …   Crustacea glossary

  • artery — (Order Decapoda): One of numerous blood vessels originating from aorta or directly from heart. According to position or body region/appendages supplied, one may distinguish, among others, antennal, antennular, hepatic, lateral cephalic,… …   Crustacea glossary

  • somite — A body segment, especially of the abdomen [Chace and Hobbs, 1969]. Body segment, as in abdominal somites 1 6 [Poore, 2004]. Body segment, especially of the abdomen [Butler, T.H.]. Division of body (head, thorax, abdomen) with exoskeleton… …   Crustacea glossary

  • supra-esophageal ganglion — Nerve plexus above esophagus in head of malacostracans [Moore and McCormick, 1969]. Nerve plexus above esophagus, equivalent to brain [McLaughlin, 1980]. (Order Cladocera): Main part of brain above (in front of) esophagus. Consists of… …   Crustacea glossary

  • rostrum — (1) Anteriorly projecting, unpaired, usually rigid median extension of carapace between eyes or ocular peduncles; (2) anterior beaklike projection of valve margins overhanging incisure or notch (Ostracoda); (3) unpaired anteroventral plate of… …   Crustacea glossary

  • antenna — ( ) [Baba, 2005]. Antennal peduncle consisting of 5 articles, based on Uroptychus. [Baba, 2005] Mobile sensory appendages arising below the eyes at the front of the head. There are two pairs of these appendages, the first and second antennae. The …   Crustacea glossary

  • protocephalon — See: acron [Martin, 2005]. Anteriormost part of the body bearing eyes [Perez Farfante and Kensley, 1997]. See: acron [McLaughlin, 1980]. (Order Decapoda): Term applied to anteriormost region of head (cephalon), especially when this is free of… …   Crustacea glossary

  • brain — (Order Notostraca): Main concentration of nreve tissue in head; consists of supraesophagael ganglion (protocerebrum and deutocerebrum) and, posterior to mouth, tritocerebrum (ganglion of antennal somite). Continues posteriorly as ladder like… …   Crustacea glossary

  • carapace — ( ) [Baba, 2005]. Entire animal, right appendages omitted, dorsal view, based on Munida. [Baba, 2005] ( ) [Baba, 2005]. Carapace, spines, based on Munida. [Baba, 2005] Head Shield cuticular structure arising from posterior margin of cephalon,… …   Crustacea glossary

  • cephalic somite — One unit of cephalon bearing distnctive pair of appendages. (Syn. cephalomere) [McLaughlin, 1980]. Unit division of head region, generally recognized as one of five such parts which bear distinctive paired appendages (antennules, antennae,… …   Crustacea glossary

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