apopyle

[′ap·ə‚pīl]

(invertebrate zoology)

Any one of the large pores in a sponge by which water leaves a flagellated chamber to enter the exhalant system.

References in periodicals archive ?

Testing of the closure of the clasper groove/tube was made by inserting a blunt tapestry needle with a coarse thread into the apopyle and through the clasper groove/tube until it came out the distal end of the clasper.

Cephaloscyllium stevensi: a new species of swellshark (Carcharhiniformes: Scyliorhinidae) from Papua New Guinea

All the water vents out of the chamber through a single excurrent opening (the apopyle) into the atrial cavity (Fig.

Feeding in a calcareous sponge: particle uptake by pseudopodia

The choanocytes of Acanthochaetetes wellsi possess a periflagellar sleeve; a central cell at the apopyle of the choanocyte chambers, as in the Hadromerida; and a spicule complement similar to that of the family Spirastrellidae in the order Hadromerida (Hartman and Goreau, 1975; Vacelet and Garrone, 1985; Reitner and Engeser, 1987; Boury-Esnault et al., 1990).

Polyphyly of "sclerosponges" (Porifera, Demospongiae) supported by 28S ribosomal sequences