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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> 713bearing a pore.porose a. [Gr. poros, channel] Containing pores; porous; perforate.porose area (ARTHRO: Chelicerata) Depressed areas on thecapitulum <strong>of</strong> certain mites and ticks.porphyrins n.pl. [Gr. porphyra, purple] Four pyrrole rings associatedwith various metals forming chlorophyll, hemoglobin,etc.porrect a. [L. por, before; regere, to stretch] Elongated forward;stretched out horizontally.portal <strong>of</strong> entry Point at which the invading parasite enters thebody <strong>of</strong> an animal; through either natural or unnaturalopenings.position effect The difference in the phenotypic expression <strong>of</strong>a gene due to a change in their position with respect toother genes on the chromosome.positive geotropism Attraction toward the center <strong>of</strong> theearth.positive tropism/taxis The tendency to be attracted to asource <strong>of</strong> stimulus.postabdomen n. [L. post, after; abdomen, belly] 1. (ARTHRO)The usually slender, modified posterior segment <strong>of</strong> the abdomen<strong>of</strong> Crustacea and Insecta. 2. (ARTHRO: Chelicerata)The anal tubercle in spiders; in scorpions the metasoma orposterior narrower five segments <strong>of</strong> the abdomen. see telson.postacrostichal bristles see acrostichal bristlespostalar a. [L. post, after; ala, wing] (ARTHRO: Insecta) Behindthe wings.postalar arm (ARTHRO: Insecta) An extension behind the wingin many insects, connecting the postnotum to theepimeron; postalar bridge; postalare. see prealar arm.postalar bridge see postalar armpostalar bristles (ARTHRO: Insecta) In Diptera, bristles on thepostalar callus.posticum see apopore

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