gill apparatus

См. также в других словарях:

• gill cover — noun Etymology: gill (III) : the fold of skin usually stiffened by bony plates and often covered with scales that protects externally the gill apparatus of most fishes compare operculum …   Useful english dictionary

• fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with …   Universalium

• Fish — /fish/, n. Hamilton, 1808 93, U.S. statesman: secretary of state 1869 77. * * * I Any of more than 24,000 species of cold blooded vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes… …   Universalium

• muscle — muscleless, adj. muscly, adj. /mus euhl/, n., v., muscled, muscling, adj. n. 1. a tissue composed of cells or fibers, the contraction of which produces movement in the body. 2. an organ, composed of muscle tissue, that contracts to produce a… …   Universalium

• Ceratocumatidae — Scientific classification Kingdom: Animalia Phylum: Arthropoda Subphylum: Crust …   Wikipedia

• Palaeospondylus — Taxobox name = Palaeospondylus fossil range = Middle Devonian regnum = Animalia phylum = Chordata subphylum = Vertebrata genus = Palaeospondylus Palaeospondylus gunni ( Gunn s Ancient Vertebrae ) is a mysterious, fish like fossil vertebrate. Its… …   Wikipedia

• ostariophysan — ▪ fish Introduction  any of about8,000 species of bony fishes (bony fish) belonging to a group that includes the majority of freshwater fishes throughout the world. Familiar representatives of this group are the minnows (minnow), suckers (sucker) …   Universalium

• chordate — /kawr dayt/, Zool. adj. 1. belonging or pertaining to the phylum Chordata, comprising the true vertebrates and those animals having a notochord, as the lancelets and tunicates. n. 2. a chordate animal. [1885 90; see CHORDATA] * * * Any member of… …   Universalium

• 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

• chondrichthian — /kon drik thee euhn/, n. any member of the class Chondrichthyes, comprising the cartilaginous fishes. [ < NL, equiv. to chondr CHONDR + Gk ichthýes (pl.) fish] * * * ▪ fish class Introduction class name  Chondrichthyes,  or  Selachii    any… …   Universalium

• amphibian — /am fib ee euhn/, n. 1. any cold blooded vertebrate of the class Amphibia, comprising frogs and toads, newts and salamanders, and caecilians, the larvae being typically aquatic, breathing by gills, and the adults being typically semiterrestrial,… …   Universalium