Glossodoris pallida retracting its rhinopores

April 12, 2006
From: Colin Ogden

Hi Bill,
In a previous message [#14635] on Hypselodoris carnea, you gave me a great explanation on the animal retracting its gills. Here I have a Glossodoris pallida which at first I thought was missing one of its rhinopores, but within seconds it had extended the "deformed" rhinopore. I, from your message mentioned above knew that this was possible with the gills of some species, but obviously they can also do this with their rhinopores.

Locality: Sodwana Bay, 12 metres, South Africa, Indian, 08 April 2006, Coral reef. Length: 20mm. Photographer: Colin Ogden.

Thanks as always
Colin

scubaco@iafrica.com

Ogden C. M., 2006 (Apr 12) Glossodoris pallida retracting its rhinopores. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16288

Dear Colin,
Yes the dorids that have  apocket into which they can retract their also have  a pocket for each of their rhinophores. Since they are precious sense organs, it's useful to be able to hide them like rhis from nibbling dish, and also from excessive amounts of silt that could clog up the leaflets or lamellae that many rhinophores possess.
Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Apr 12). Comment on Glossodoris pallida retracting its rhinopores by Colin Ogden. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16288

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