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Gonophores

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Gonophores 

modified individuals in the colonies of hy-droid polyps and siphonophores in which the sex products are formed.

Gonophores are in effect underdeveloped medusae that remain attached to the trunk of the colony, with a closed bell, without radial canals and tentacles, and usually without a proboscis. Gonophores are dioecious, and the sex products, formed from the ectoderm and lining the cavity of the gonophore, emerge to the outside through a cleft in the body wall.



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According to Pennak (1989), freshwater colonies only produce a few gonophores per colony.
 
 
 
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