hydroid

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hydroid

a member of the COELENTERATE class Hydrozoa. Most are colonial forms which grow in the marine environment on rocks and seaweeds, such as Obelia. Usually, there is an ALTERNATION OF GENERATIONS (not in HYDRA) in which the MEDUSA (free-swimming) stage carries the sex organs. The sedentary, nonsexual stage of this life cycle is itself referred to as the POLYP or (less commonly) hydroid stage.
References in periodicals archive ?
Settlement behavior of the tube worm Hydroides norvegica Gunnerus in the eastern harbor of Alexandria.
En el muestreo tres se obtuvo una riqueza total de 57 especies (Cuadro 5), donde las especies con mayor presencia en las cinco estaciones fueron Clibanarius albidigitus, Clibanarius panamensis, Crucibulum spinosum, Eupleura muriciformes, Hydroides crucigera y Nerita funiculata con presencia en cuatro de las cinco estaciones muestreadas.
Metamorphic-signal transduction in Hydroides elegans (Poly-chaeta: Serpulidae) is not mediated by a G protein.
Blister worm Lepidonotus squamatus Scale worm Hydroides dianthus Feather duster worm Pectinaria gouldii Ice cream cone worm Spiochaetopterus oculatus Cellophane tube worm Glycera sp.
Euclymene gracilis Glycera unicornis Savigny in Lamarck, 1818 Glycera convoluta Keferstein, 1862 Hydroides heterocerus Grube, 1868 Hydroides norvegicus Gunnerus, 1768 Hydroides sp.
Thirty years later, Ehlers (1887) identified Spirobranchus incrassatus (Kroyer, 1863) in the Bay of Acapulco, the first record for the Mexican Pacific, but it was not until 1904 that Bush described a new species from the Mexican Pacific region: the serpulid Eupomatus humilis, a species currently valid as Hydroides humilis fide Pillai (1972).
Las especies mas abundantes fueron Pileolaria militaris, Hydroides dirampha, Salmacina sp.
Hydroides elegans, a common member of warmwater biofouling communities around the world, provides an outstanding model for studies of calcification.
Biofouling communities consisted of Crepidula fornicata, Crepidula plana, Anomia simplex, barnacles (which were not identified to species during samplings), Schizoporella unicornis, Hydroides dianthus (Serpulidae), Anadara ovalis, and Microciona prolifera.
The most abundant species were Hydroides dirampha Morch, 1863, Pileolaria militaris Claparede, 1868 (Serpulidae), and Notaulax nudicollis Kroyer, 1856 (Sabellidae).
Effects of the duration and timing of starvation during larval life on the metamorphosis and initial juvenile size of the polychaete Hydroides elegans (Haswell).