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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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<strong>Online</strong> <strong>Dictionary</strong> <strong>of</strong> <strong>Invertebrate</strong> <strong>Zoology</strong> 453hydrostatic organs (ARTHRO: Insecta) In some larval Culicidae,pigmented, crecent-shaped organs found laterally onthe thorax and near the tail.hydrostatic system (BRYO: Gymnolaemata) A method <strong>of</strong> protrusion<strong>of</strong> the lophophore in some autozooids; made up <strong>of</strong>flexible frontal wall or infolded frontal wall sac and attachedparietal muscles which contract and raise the lophophoreby hydrostatic pressure in the autozooid.hydrostome n. [Gr. hydor, water; stoma, mouth] (CNID: Hydrozoa)The mouth <strong>of</strong> a polyp.hydrotaxis n. [Gr. hydor, water; taxis, arrangement] A taxis inresponse to a moisture gradient initiating stimulus.hydrotheca n. [Gr. hydor, water; theke, case] (CNID: Hydrozoa)Peridermal cups into which most or all <strong>of</strong> the hydranthcan retract, may be provided with an operculum; in someThecata, the cup may be reduced to a mere platform supportingthe hydranth.hydrotropism n. [Gr. hydor, water; tropos, turn] The response<strong>of</strong> an organism to water stimulus.Hydrozoa, hydrozoans n.; n.pl. [Gr. hydor, water; zoon,animal] Class <strong>of</strong> the phylum Cnidaria having both polyp andmedusal stages.hydrula n. [Gr. hydor, water] A simple hypothetical polyp. seehydropolyp.hygric a. [Gr. hygros, wet] Tolerating or being adapted to humidconditions.hygrokinesis n. [Gr. hygros, wet; kinesis, movement] Orientationdue to differences in humidity.hygrometabolism n. [Gr. hygros, wet; metabole, change] Theinfluence on metabolism by humidity.hygropetric a. [Gr. hygros, wet; petros, stone] Pertaining tothe fauna <strong>of</strong> submerged rocks.hygrophilous see hydrophiloushygroreceptor a. [Gr. hygros, wet; L. recipere, to receive] Asensory cell or structure that is sensitive to moisture.hygroscopic a. [Gr. hygros, wet; skopein, to view] Moisture

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