- gastric mill
- A food grinding apparatus in the foregut of decapod crustaceans; in penaeid shrimps, consists of denticles (tooth-like processes) and lateral ridges in wall of anterior chamber; in crayfishes, lobsters, and crabs, consists of one dorsal and two lateral teeth at junction of anterior and posterior chambers [Bliss, 1982].Apparatus of varying complexity in stomodeum which serves to break up food; consists of framework of movably articulated ossicles developed as thickened and calcified part of stomodeal lining, most highly specialized in decapods [Moore and McCormick, 1969].Heavily sclerotized teeth of the cardiac stomach of most decapods [Brusca and Brusca, 2002].The structures responsible for grinding food within the stomach (Fig. 10) [Warner, 1977].(Order Decapoda):Grinding apparatus in posterior region of cardiac stomach. If fully developed, consists of muscular stomach walls bearing plates (ossicles), projecting teeth, and various pads and folds [Stachowitsch, 1992].(Subclass Cirripedia):Apparatus in cardiac stomach (stomodeum) with framework of movably articulated ossicles developed as thickened and calcified parts of stomodeal lining used to break up food, most highly specialized in decapods; also chitinous triturating apparatus in foregut of some acrothoracicans [McLaughlin, 1980].(Class Ostracoda):In certain ostracods, term occasionally applied to lamellar respiratory process located dorsally on trunk [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.
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Gastric mill — is a part of the digestive tract of crustaceans. It is a muscular tube with sharp spines on the inside used to crack food items like hard shelled diatoms … Wikipedia
gastric mill — noun thick walled muscular pouch below the crop in many birds and reptiles for grinding food • Syn: ↑gizzard, ↑ventriculus • Hypernyms: ↑pouch, ↑pocket * * * noun : a grinding apparatus consisting of several movable calcareous or chitinous pieces … Useful english dictionary
gastric mill — Zool. 1. a gizzard in decapod crustaceans, as lobsters, crabs, and shrimps, having an arrangement of teeth and small bones for grinding food and bristles for filtering small particles. 2. gizzard (def. 2). [1895 1900] * * * … Universalium
gastric ossicles — (ARTHROPODA: Crustacea) The teeth of the gastric mill … Dictionary of invertebrate zoology
gastric — mill (ARTHROPODA: Crustacea) 1. Thickened and calcified parts in the cardiac stomach lining composed of moveable articulated ossicles used to break up food. 2. In Acrothoracica, chitinous triturating apparatus in the foregut; masticatory stomach … Dictionary of invertebrate zoology
ossicles — Small, hard plates and projections of the internal gastric skeleton of decapod crustaceans; serve in part for attachment of muscles that move the foregut [Bliss, 1982]. (Order Decapoda): One in a complex of rigid, plate like structures associated … Crustacea glossary
tooth — (Order Decapoda): Tooth like structure, either in gastric mill of cardiac stomach or referring to blunt, relatively broad projection on outer surface of carapace. In cardiac stomach, one may distinguish one median and two lateral teeth. On… … Crustacea glossary
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
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
Antarctic krill — Taxobox name = Antarctic krill image width = 200px regnum = Animalia phylum = Arthropoda subphylum = Crustacea classis = Malacostraca ordo = Euphausiacea familia = Euphausiidae genus = Euphausia species = E. superba binomial = Euphausia superba… … Wikipedia