Gastrovascular flow and colony development in two colonial hydroids. From: The Biological Bulletin | Date: February 1, 1996| Author: Blackstone, Neil W. | COPYRIGHT 1996 Marine Biological Laboratory. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group.Copyright information

Using field-collected Podocoryne carnea and Hydractinia symbiolongicarpus, ten colonies of each species were produced by sexual crosses and grown from primary polyps to sexual maturity. At comparable stages in the life history, each colony's morphology was measured using digital image analysis, and each colony's gastrovascular flow to three peripheral stolon tips was recorded using video microscopy. Gastrovascular flow to peripheral stolon tips shows very different patterns in the two species...