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Ecteinacsidia diaphanis (Sluiter, 1885)

Colonial Sea Squirt

Victoria Dewar-Fowler (2013)

 

 

Fact Sheet

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Summary


Physical Description


Ecology


Life History & Behaviour


Reproduction and Development


Anatomy & Physiology


The Tunic


Musculature


Respiratory and Circulatory Systems


Digestive System, Nutrition and Excretion


Nervous System


Evolution & Systematics


Biogeographic Distribution


Conservation & Threats


Microplastic Study


References and Links


Glossary


References

Ecology


North Beach, Heron Island. Reef crest from which E. diaphanis were collected. 
Image from SEPM STRATA Society for Sedimentary Geology©

E. diaphanis are found on the underside of rock and corals, forming cryptic communities. These communities are highly diverse and with limited space, it is assumed that E. diaphanis is competing with many other sedentary organisms for space. They increase the surface area of the rock and so provide a greater surface area for other organisms to attach. The stolons have some epiphytic growth (Gosliner et al.,1996), during my study it was noted that a small octocoral was growing on the stolon of a zooid. It is also possible that, like other ascidians, E. diaphanis forms associations with other animals.

Ascidians are ecologically important within the coral rubble communities as efficient filter-feeders. They are responsible for filtering the water, removing and storing toxins, purifying the water for other organisms. Ascidians are also prey for specialised species of molluscs, thereby contributing to the marine food web. 

Classification

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