Lophopus crystallinus

Verder in Nederlands
Nederlands

  1. More information
  2. Photos
  3. Microscope photos and videos
  4. Statoblasts

L. crystallinus is a rare species. These photos are from the Bosmolenplas thanks to Siliva Waajen and Jan Vossen.

L. crystallinus forms a jelly sack from which the zooids extend on one side. A colony can crawl like an amoeba by extending and contracting the sack. On this photo this is shown by the jelly thread that trails the colonies, some statoblasts left behind in a bit of jelly. Also a slimy trail can be seen.
The colony has been splitting up into two colonies. Given observations on site this is a common phenomena .
Specially the left colony clearly shows new zooids being formed inside the sack.

Lophopus crystallinus

The seconds photo shows a colony in more detail. The shine on the sack surface is striking. No other species has a shiny surface.

Lophopus crystallinus

The third photo shows another colony that is also splitting up. Here too a slimy trail and a jelly thread with statoblasts.

Lophopus crystallinus

On another location (the other side of the sunken boat) it can be clearly seen that Lophopus colonies really crawl and for significant distances too. Given the crawling pattern it is likely that one colony has been splitting up repeatedly and each subsequent colony has moved on to find a good spot.

Lophopus crystallinus kruipt

The location we found Lophopus crystallinys, a sunken wooden boat at 12 m depth and at 12 oC, was full of Lophopus colonies.

Lophopus crystallinus

On the same boat several freshwater sponge colonies were living. Sometimes the Lophopus colonies nearly grew into the sponge, or is it crawls on top of the sponge?.

Lophopus crystallinus and sponge

This photo again clearly shows Lophopus living closely besides sponge colonies.

Lophopus crystallinus and sponge

This photo by Silvia Waajer shows how Lophopus grows on a zebramussel (Dreissena polymorpha).

Lophopus crystallinus on zebramussel

This photo is also by Silvia. It shows Lophopus growing on a strand of algae. The photo below it is a cutout that shows how the Lophopus colony clings to the weed and supports itself on the bottom.

Lophopus crystallinus on algae strand
Lophopus crystallinus on algae strand detail