Schizoporella Orange

Overview

Schizoporella dunkeri is an encrusting bryozoan that forms extensive, spreading sheets on hard surfaces. These colonies are composed of individual modular units called autozooids, which can grow in single or multiple layers to cover significant areas.

Appearance

This species is characterized by its vibrant orange coloration, which is visible in both the calcified colony structure and the delicate, tentacle-bearing lophophores used for feeding. The colonies typically remain firmly attached to their substrate and do not form raised, erect structures. Under close inspection, the surface appears granular, and the individual zooids are often rectangular to hexagonal in shape.

Distribution & habitat

Schizoporella dunkeri is found in the Atlantic, ranging from the Iberian Peninsula to British waters, as well as in the Azores. It is also present throughout the Mediterranean Sea. It typically inhabits shallow marine environments, often found growing on the undersides of stones and other stable substrates.

Feeding

As a suspension feeder, this bryozoan actively filters microscopic organisms from the water column. Its diet primarily consists of bacteria, diatoms, and other unicellular algae, which are captured by the ciliated tentacles of the lophophores.

Biology & behavior

Colonies can host various epibionts, including small hydroids, without apparent impact on their health. The species reproduces both sexually and asexually, with asexual growth occurring through the budding of new zooids at the colony's edges, allowing it to expand across available surfaces.