Home|Search|Identify|Taxonomic tree|Quiz|About this site|Feedback
Developed by ETI BioInformatics
Characteristics, distribution and ecology
Taxonomische classification
Synonyms and common names
Literature references
Images, audio and video
Links to other Web sites

(Carter, 1876)

Species Overview

Crella (Yvesia) pyrula (Carter, 1876) is a stalked yellowish sponge with a wedge-shaped lobate main body. It occurs in northern and western deep water areas.

Taxonomic Description

Colour: Whitish or greenish yellow.
Shape, size, surface and consistency: Stalked, wedge-shaped or lobate-divided. Height up to 7 cm. Surface smooth, crowded with areolated porefields. Oscular tubes mostly on the upper surface. Consistency rather firm.
Spicules: (Crella pyrula spics) (Cometella pyrula spics) Megascleres: Tornotes oxea-like: 350-580 x 5-11 µm; acanthostyles of the surface skeleton: 110-200 x 5-14 µm. Microscleres: Arcuate isochelae: 20-26 µm.
Skeleton: Ectosomal: a feltwork of tangentially arranged acanthostyles; the areolated porefields only contain chelae. Choanosomal: an axial skeleton of tornotes strengthens the stalk and from there bundles of tornotes diverge to support the main body; single acanthostyles are strewn in the choanosome.
Ecology: 130-700 m
Distribution: SW Ireland, Sweden, Norway, Arctic.
Etymology: pyrula (Greek) = little pear, referring to the habit.
Type specimen information: The type is is in the Natural History Museum, London: BMNH 1882:7:28:11 (wet + 3 slides).

Remarks

The present species may be easily distinguished from the other Crella species of the area by its stalked habitus and large size of the tornotes.
Source: Arndt, 1935.

Crella pyrula