Hermodice caruncle

[Peter Wirtz]

Dear colleagues,

what is the function of the "caruncle" of Hermodice carunculata, i.e. the large, 
red, pleated protuberance on the head ?  

Apologies for probably a very trivial question,

Peter


Dr. Peter Wirtz 
PO Box 103 
P - 9125 Canico, Madeira 
Portugal 
Tel+Fax 00351-291-934784 

peter.wirtz at clix.pt 

http://www.medslugs.de/E/Photographers/Peter_Wirtz.htm#photos 
http://www.fishbase.org/Photos/ListThumbnails.cfm?id=806&sortby=genus


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