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You are here:   OldClasses > 2012 > Coeloplana agniae | Sara Guillouzouic

 

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Coeloplana agniae Davydoff, 1930

Benthic ctenophore

Sara Guillouzouic (2012)

 

 


Fact Sheet

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Summary


Physical Description


Ecology


Life History & Behaviour


Anatomy & Physiology


Evolution & Systematics


Conservation & Threat


Biogeographic Distribution


References & Links

LIFE HISTORY & BEHAVIOUR



                                 

Feeding.


Coeloplana agniae feeds on plankton which it catches thanks its extendable tentacles.

Both tentacles have a dissociable extension/retraction in time and space.
Through these extensions, it catches planktonic suspension and retracts tentacles to the central mouth.

The reef slope zooplankton is mainly composed by copepods (~40%), Cumaceans (~35%) and larvae.


Those small organisms are caught by the colloblasts (or collocytes) which are small sticky cells beared by the tentacles and the tentilla of
Coeloplana agniae.



                  

Locomotion.


Coeloplana agniae is said to be a sessile animal. Even if it remains still on its substrate most of the time, it can also creep.

A ciliated sheath is visible underneath the animal which allows it to creep quite quickly (a few centimeters per minute) on a hard surface (see the link: http://www.youtube.com/embe/uTmK4UU9NJc).

After being observed under bright lights, Coeloplana agniae floatted on the water surface. Even if it seemed to be weak, its tentacles were still moving, trying to catch preys.







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Classification

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