Re: Caloria elegans feeding

March 27, 2009
From: Dominique Horst


Concerning message #21502:

Hi Bill,

To complete Caloria elegans feeding. Here is an animal on a Halimeda plant, feeding on a kind of network of hydroids...

Locality: Antibes, 9 m, France, Mediterranean sea, 22 March 2009. Length: 13 mm. Photographer: Dominique Horst.

Best regards,
Dominique

dominique.horst@wanadoo.fr

Horst, D., 2009 (Mar 27) Re: Caloria elegans feeding. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22354

Thanks Dom,

Your photos show the net-like arrangement of tubes which link the individual polyps in this type of hydroid colony.

As I have outlined on the Hydroid Fact Sheet, there is a great variation in growth forms amongst hydroids, some live as solitary individuals, but most are colonial. The most noticeable are those that form quite large colonies which look like fern fronds. However many colonies go unnoticed because the polyps are very small and their small tube-like stalk is joined to its colonial 'relatives' by a meandering network of root-like tubes. We can see these tubes as a thin whitish network in Dominique's photos.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Mar 27). Comment on Re: Caloria elegans feeding by Dominique Horst. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22354

Factsheet

Caloria elegans

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