gnathopods
Chelate or subtotal, prehensile maxilliped (e.g., Amphipoda); also used for first two prehensile pereiopods of amphipods whether chelate or subchelate [Moore and McCormick, 1969].
Prehensile maxilliped; also 1st 2 prehensile pereopods of amphipods, either chelate or subchelate [McLaughlin, 1980].
(Order Amphipoda):
Modified second and third thoracopod pairs (= first and second pereopods). Uniramous, consisting of modified, immovable coxa (coxal plate) and six free segments (basis, ischium, merus, carpus, propodus, dactylus). Last segments typically form subchela. (sexually/not sexually dimorphic, polymorphic: carpo-subchelate, chelate, subchelate) [Stachowitsch, 1992].
(Order Isopoda):
A loosely used term usually referring to chelate or subchelate pereopods associated with the head region and used for food handling. This term is rarely used for isopods [Wetzer et al. 1997].
(Order Isopoda):
Term applied to more anterior pereopod(s) if modified as prehensile (grasping) organ. Last segments typically form subchela [Stachowitsch, 1992].
(Order Mysida):
Term applied to thoracic endopods when these are modified as mouthparts [Stachowitsch, 1992].

Crustacea glossary. . 2011.

Look at other dictionaries:

  • pereopod — See: pereiopod [Martin, 2005]. An appendage of the pereon [Brusca and Brusca, 2002]. Non maxilliped thoracic limbs; five pairs in Decapoda (thoracopods 4 8) and three pairs in Stomatopoda (thoracopods 6 8); includes one pair of chelipeds and four …   Crustacea glossary

  • thoracopod — (Syn. thoracopodite) [Martin, 2005]. An appendage of the thorax [Brusca and Brusca, 2002]. Appendage of any thoracic somite; see thoracic appendage, phyllopod, maxilliped, pereopod. (Syn. cormopod) [McLaughlin, 1980]. Limb attached to any… …   Crustacea glossary

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  • Gammarus pulex — Gammarus pulex …   Wikipédia en Français

  • Rivulogammarus pulex — Gammarus pulex Gammarus pulex …   Wikipédia en Français

  • cephalosome — n. [Gr. kephale, head; soma, body] (ARTHROPODA) The head region of an arthropod; in crustaceans, this includes only somites bearing maxillipeds or gnathopods, or both …   Dictionary of invertebrate zoology

  • amphipod — /am feuh pod /, n. 1. any of numerous small, flat bodied crustaceans of the group Amphipoda, including the beach fleas, sand hoppers, etc. adj. 2. of or pertaining to the amphipods. [1825 35; < NL Amphipoda; see AMPHI , POD] * * * ▪ crustacean… …   Universalium

  • 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

  • cephalosome — Head region when this includes only somites bearing maxillipeds or gnathopods, or both [Moore and McCormick, 1969]. (Subclass Copepoda): Head region with one or two fused thoracic somites (Copepoda) [McLaughlin, 1980]. (Subclass Copepoda): One of …   Crustacea glossary

  • chela — A claw formed by the dactyl and propodus or a limb. Incorrectly used in euphausiids to describe setae in the configuration of a claw [Mauchline, 1984]. A claw, or the claw like terminus of a cheliped [Bliss, 1982]. A forceps like structure… …   Crustacea glossary

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