pics of zoas eating

As far as I remember, smaller zoas have a gastric cavity and should therefore obtain at least a portion of their diet from digested foods. The difference is that they will not have an active feeding response like the larger palys (looking at the length of the skirt is a quick and easy, if not entirely accurate, indicator of feeding propensity IME).

Agreed. The Gastrovascular cavity is mainly to digest food particles and transport zooxanthellae (absorb/expel).
The Gastrovascular cavity should also be used to retain/release water, changing the size of the polyps, when needed.

About the skirts... not entirely accurate indicator, but most of the times IMEs.
Water movement plays a huge deal with the size of skirts IMO.

Grandis.
 
Perhaps you didn't mean the zooxanthellae are digested? Please explain. I think I need to learn something here. :)

I'm getting more than slightly tired of these semantics games. If you'd like to read about Zoanthus phagocytosis there are peer reviewed articles out there. Do you have any scientific articles showing that all zoanthus species use their coelenteron for consumption of foods and not just for expelling zooxanthellae? Or that skirt length has any correlation with food consumption? I haven't found any. It seems that you're "imo" in your posts, and "scientist" when it comes to questioning those of others, sometimes both at the same time. To be honest, and I know you don't intend on coming off this way, it's getting more than a little irritating.

About the feeding responses, IMEs I know all my zoanthids do ingest, digest and excrete feces. So they do eat. All of the Hawaiian ones that I have. Some eat very fast closing their skirts around the food particles and some others will take a while. Normally the small zoanthids are the most slow eaters IME.

You need to start realizing that your experiences are 100% with only Hawaiian zoanthids, and even then are solely empirical. It may not be applicable elsewhere, and definitely should not result in these concrete "certainties" you keep posting.
 
I'm getting more than slightly tired of these semantics games. If you'd like to read about Zoanthus phagocytosis there are peer reviewed articles out there.
Thanks for the tip! Please don't get "tired"! I'm just trying to be polite here.

About phagocytosis:
The genus Symbiodinium encompasses the largest and most prevalent group of endosymbiotic dinoflagellates known to science. These unicellular algae commonly reside in the endoderm of tropical cnidarians such as corals, sea anemones, and jellyfish, where they translocate products of photosynthesis to the host and in turn receive inorganic nutrients (e.g. CO2, NH4+) (Fig. 1). They are also harbored by various species of sponges, flatworms, mollusks (e.g. giant clams), foraminifera (soritids), and some ciliates. Generally, these dinoflagellates enter the host cell through phagocytosis, persist as intracellular symbionts, reproduce, and disperse to the environment (note that in most mollusks, Symbiodinium are inter- rather than intra-cellular). Cnidarians that are associated with Symbiodinium occur mostly in warm oligotrophic (nutrient-poor) marine environments where they are often the dominant constituents of benthic communities. These dinoflagellates are therefore among the most abundant eukaryotic microbes found in coral reef ecosystems.
From Wikipedia:
http://en.wikipedia.org/wiki/Symbiodinium

Digestion, simply:
The process by which food is converted into substances that can be absorbed and assimilated by the body.
From:
http://www.thefreedictionary.com/digestion

Symbionts aren't digested.
They aren't broken down and taken as nutrients, normally.
Symbionts are selected to be absorbed though the process of phagocytosis and to be kept alive in the cells, nor digested, like you've said. Sorry.
I'm not trying to pick on you! I really thought you were referring ingestion and digestion of zooxanthellae.

Do you have any scientific articles showing that all zoanthus species use their coelenteron for consumption of foods and not just for expelling zooxanthellae?
Of course not... yet.

Or that skirt length has any correlation with food consumption?
Nope! But I agree with you on that one.
You're so upset that you didn't get it! :D
Please read carefully next time.

I haven't found any. It seems that you're "imo" in your posts, and "scientist" when it comes to questioning those of others, sometimes both at the same time. To be honest, and I know you don't intend on coming off this way, it's getting more than a little irritating.
LOL!!! You must have collection of my posts. Good for you! LOL!!!
It can get irritating to you. Sorry, but I don't really care. LOL!!!
If you know I don't intend on coming off this way you should stop reading my posts then, because you just can't take it! I don't know why? I never did nothing bad to you and respect all your posts. It is really not my intention to make you upset at all. That's crazy! :wildone:

You need to start realizing that your experiences are 100% with only Hawaiian zoanthids, and even then are solely empirical. It may not be applicable elsewhere, and definitely should not result in these concrete "certainties" you keep posting.
I don't have to realize about my Hawaiian zoas. I know that and I post that part, so everyone knows.
I'll be posting my certainties again and again, my friend.
And you know what? If you want to post yours, I'll be happy to read and learn from them, not getting upset about it. LOL!!!! I'm not here to provoke anyone nor try to proof any lies.
By the way, many other friends from the mainland posting here have found some of what I've said to be truth with zoas other than only the Hawaiian ones. Just so you know...
Please relax and have fun! This is just a hobby!!!
And non of us is the King of Zoas! Remember that! :D

So sad to see posts like this! No hard feelings.
Cheers!:beer:
Grandis.
 
Om nom nom!

bluerhinoeating.jpg

FlOrangeeating.jpg

redarceating.jpg

(The closed polyps on this one you can see the mysis sticking out):
voidbringereating.jpg


I've tried spectrum, and have noticed that they do eat that as well.
 
Thanks Grandis! I've been lazy and tried spectrum. Works like a charm, and a lot less work. LOL! Still waiting for some fauna marine pellets though.
 
Thanks Grandis! I've been lazy and tried spectrum. Works like a charm, and a lot less work. LOL! Still waiting for some fauna marine pellets though.

They will love you for the Fauna Marin pellets!!! :lol2:
You can give also Fauna Marin Zoa/Acan food to the smallest zoanthids, if you have any. They just love the powder!!! I've got a sample from MACNA and it's like gold!!! I just had to order.
That's what we do for your polyps!!! :thumbsup:

Grandis.
 
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