Talk:Hydrozoa
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[edit] Flotation of Hyrda
I am not convinced by the statement re Hyrdas secreting gas bubbles from the pedal gland to provide flotation. This was included in many victorian text books and re-iterated in more modern texts but in many years of studying hydra I have never observed the phenomenum. Certainly Hydra move across the surface film of ponds with their tentacles hanging down and they also have been seen to 'walk' across the surface by bending the body stalk up and attaching by the mouth and then swinging the body over to re-attach the pedal gland - but all of this using surface tension only. Any evidence for this supposed gas excretion from modern observational or experimental biology ?
Velela 16:04, 17 Feb 2005 (UTC)
[edit] grammar check
"When a gonangia buds, a medusae is produced."
now, i'm no expert, but shouldn't that be "when a gonangion buds, a medusa is produced?"pauli 02:58, 6 August 2005 (UTC)
[edit] Stylasterina?
Some places on the net names Stylasterina as an order of Hydrozoa. What is the reliable source to check? þħɥʂıɕıʄʈʝɘɖı 04:37, 5 September 2006 (UTC)
- Probably, current most reliable reference is, J. Bouillon, M.D. Medel, F. Pagès, J.M. Gili, F. Boero and C. Gravili. 2004. Fauna of the Mediterranean Hydrozoa. Scientia Marina, 68 (Suppl. 2). You can find it here. [1]. I think that the infobox for the list of orders should be revised. I will edit when I have a time. --Isorhiza 08:49, 22 November 2006 (UTC)
