Parenchymula

parenchymula

[‚par·əŋ′kim·yə·lə]
(invertebrate zoology)
The flagellate larva of calcinean sponges in which there is a cavity filled with gelatinous connective tissue.

Parenchymula

 

one of the free-swimming larval stages of sponges and numerous coelenterates. The elongated oval body consists of flagellate ectodermal cells and a mass of entodermal cells (parenchyma). In sponges, the parenchymula settles to the bottom and becomes attached; in coelenterates, it changes into the planula stage.

References in periodicals archive ?
H] label within the larval body fusing light-microscopic autoradiography) in field-collected parenchymula larvae of the demosponge Tedania ignis.
Field-collected parenchymula larvae of Tedania ignis are orange-red in coloration and averaged 818.
The average weight of a Tedania parenchymula larva was 16.
Although parenchymula larvae of Tedania ignis lack a functional digestive system, these larvae have the physiological capacity to acquire nutrients and energy from their environment through the transport of DOM from seawater.