Spawning in captivity?

Yeap. I couldn't tell they were actually spawning.
This is not to say that zoanthids can't spawn in captivity.
Just that I coudn't see any evidence of them spawning in that video.
Grandis.
 
Sally Jo believes those are eggs on the skirts.

I have heard of it, but have never experienced it zoas spawning in captivity. It is not the predominent means of reproduction in zoanthids, but I believe it does occur.

Just thought I'd share it is all.


Mucho Reef
 
Well, of course they indeed reproduce sexually in nature, and I do think they can release eggs in home aquariums too.
I didn't see the mouths releasing the eggs in the video.

Here is another:
http://www.youtube.com/watch?v=KA2qqZb7020&feature=related

"Spawning", or "pooping event"?:D
Could be "zooxanthellae event" too...

And one more:

http://www.youtube.com/watch?v=-TVTiMc67xI&feature=related

The colors can vary, depending on what you feed them, if that's poop.
I've seen that all the time in my systems. Poop and zooxanthellae.

The white stuff in GARF's video could be other then eggs. Perhaps sand grains? I don't know. Hard to judge.
I would love to be wrong and at the same time would love to see their mouths releasing those white dots.

My point here is: they sure could be mistaken.

I don't think I ever saw zoanthids releasing eggs before.
I hope I'll.

Grandis.
 
I'm mixed on this event being a spawn event or just taking a dump..

I will add this is the only time I've seen these zoas doing this so it not a regular event, and several of these zoas were doing the same thing at the same time idicating it was something jointly triggered.

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psteeleb:
The video you've just posted is probably zooxanthellae, not poop.
When the "joint event" happens it's almost 100% zooxanthellae release.
They normally don't go to the bathroom together. :D
I do believe they release eggs together (same colony), like corals.

There is too much on the video and there must be because of temperature and/or change of light.
If it was really zooxanthellae, the polyps could loose some of their beautiful color pattern and if that continues after 3 or 4 times, it could have a severe affect on the colony. They normally take over 6 months to recover in that case, depending on the species and the amount of lost zooxanthellae released. Most of the time they won't have the exact same color pattern (morph) when they get back from the stress. They could parish depending on the intensity of the event.

I had similar situation happening with major water changes (chemistry), introduction of shrimps in the system (irritating the polyps) and with the use of activated carbon in the past. Those were 3 different events.

I've seen some polyps releasing excess zooxanthellae in normal (established systems with no physical changes - light, temp...) situations, but not that much. Normally the lines are very fine and with the round edged tip. Not many polyps together.

Very nice video!!!!! Well made!!!
Is that yours?
Any forward info on those polyps?
Thanks for the video!!
How do you place the video directly here?
I love this type of subject.
Grandis.
 
Hmm. I had not thought about zoanthid sexual reproduction. I've never seen it, but that doesn't mean it doesn't happen. Many corals do have sexual reproduction mechanisms. Zoanthids may as well. Interesting.

psteeleb, that does look like a colony wide zooxanthellae expulsion event to me. Nice work on the filming. Those look like some happy polyps in general, though I hear Grandis' point about a colony expelling that much / many zooxanthellae was most likely a reaction to some acute stress.
 
Thanks Grandis and Reef Bass - and I apologize in advance if I'm hijacking this thread. I would never have guessed that event to be zooxanthellae expulsion.

It’s hard to say at this time what may have triggered the event but suspect it may have been water change related. The zoas never loss any coloration and have always looked very healthy. I will add I need to trim back some SPS on both sides of them as they are being over taken.

Grandis – in answer to your questions:

Is that yours? Yes :)

Any forward info on those polyps? Updated picture below, I traded for one polyp a year ago the guy called them Candy Apple Reds, my guess is there are over 50 polyps now

Thanks for the video!! Your welcome and thanks for watching and the feedback

How do you place the video directly here? From Youtube you select “share” then “embed”, there are a couple options that come up from there, then just copy and paste the link box into the tread.

here is a recent picture of the zoas in the video:
file.php
 
I was just wondering, if there spawning which isnt there regualar way of reproduction in tanks perhaps there is an issue in the area/tank, and spawning gives it more chance of survival by spreading over a larger area.
 
I was just wondering, if there spawning which isnt there regualar way of reproduction in tanks perhaps there is an issue in the area/tank, and spawning gives it more chance of survival by spreading over a larger area.

I was wondering if it wasn't more polyp type specific even when under stress. I have a lot of zoas in my tank but most are isolated to one rock or area. On one rock I have some that I call fire and ice if asked to describe it. 18-24" away I have some African blue steels. Recently I noticed an odd polyp growing next to the ABS and thought I was getting some freak color change I hear you people talking about. I let it grow to maturity and it was a fire and ice polyp.

This did not appear to be a polyp that got loose of the large colony and ended up reattaching next to the ABS. The idea of spawning occured to me however I am not one to document my tank so I have no photo journal of the event and when I realized what polyp it was I cut what I could out and puttied over the base to ensure the ABS would dominate that area.

To the best of my recollection this happened during a time when my hammer was going crazy and putting a beating on the zoas near it. The fire and ice were hit very hard as were 2 other colonies however the fire and ice were the only ones that I may have seen successfully spawn.
 
I have stray polyps pop up in other sections of the tank all the time but I always attribute them to baby breakoffs that floated to the new location.
 
It never ceases to amaze me all the great information that comes from a good reefing discussion. Thanks everyone for sharing.


MUCHO REEF
 
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