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OP
OK, so what’s causing RTN?
Possible solution to end RTN forever?!?
- Thread starter Reefahholic
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OK, so what’s causing RTN?
OP
OP
According to all the research.
OP
OP
Can somebody text Sanjay Joshi, Julian Sprung, & Mike Paletta. Get their thoughts.
Ohh and Richard Ross....he’ll love this.
Ohh and Richard Ross....he’ll love this.
MnFish1
10K Club member
The answer to me is they don’t attack coral unless it’s dead or dying. A bacterial infection is the root cause of rtn according to what we know nowThis is what I believe. As I stated above...I feel like they are opportunistic feeders like Uronema. Most likely present in every tank. As with anything there could be the rare exception. I believe they’re triggered to attack only the weaker corals that are stressed for whatever reason. Too much/little light, flow, temp, alk, trace, nutrition, PO4, NO3, etc. As somebody suggested on my YouTube channel- it could be that the coral sheds some of its slime coat and the door swings wide open.
The main question I want to know is this:
Can they infect a totally strong and healthy acropora colony that isn’t not stressed. If they can...and assuming his stuff works (I’ve seen enough video that I believe it does) we need to do the in-tank treatments to keep the numbers down. While it may be impossible to eliminate them all together, I do believe we can gain significant control by dipping new arrivals and treating the tank periodically. How frequently is something we need to figure out. I think of the Philaster like ICH. It’s very difficult to keep out, but it can be managed and controlled. Who knows, we might be able to completely nuke them.
Again, I appreciate everybody that’s participating in this thread. It’s become a very interesting debate, but I wish we could keep it friendly. Reefers unite!
MnFish1
10K Club member
Parasitic how? What research? I read all the papers I could find. I saw only that it attacks coral tissue that has been damaged by a primary bacterial infection? In my reading of dr d’a research he stated that it is not found on healthy coral. This it is not a parasite the way I understand parasites. Uronema is not a parasite. It is a pathogen.
OP
OP
It may be. I just haven’t seen anything that says a bacterial infection is 100% the cause or any video of it eating coral.
On the other hand, I have seen video of the Philaster eating coral and everybody can see those in this thread.
For me it’s not a matter of who’s right or wrong. It’s more about where the evidence leads me personally, because I want to end all the issues I’ve had over the years. Sure would be nice!
OP
OP
Uronema marinum
Uronema marinum is a free-living rather than obligate parasite as it feeds on live food, dead tissue and bacteria. However, this parasite is opportunistic and, it is often found on recently captured, transported, or otherwise weakened hosts. Poor conditions and stress are believed to be factors as they negatively impact the host’s immune system. Uronema marinum infects fish within a wide temperature and salinity range and invades the internal organs in advanced stages.
Reproduction
Reproduction is by fission.
Flippers4pups
Fins up since 1993
I'm just now reading this thread and about have way through.
There was a scientific study on these back in November of 2014, published in 2015 In the Journal of the sea research:
I'm trying to read through that study as well, so my thoughts and responses to this will have to wait.
There was a scientific study on these back in November of 2014, published in 2015 In the Journal of the sea research:
I'm trying to read through that study as well, so my thoughts and responses to this will have to wait.
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snorvich
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Join Date: Aug 2005
Location: Outlander
Posts: 41,247
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Brooklynella hostilis and Uronema marinum
Introduction
Brooklynella hostilis (Brook) and the less common, and often misidentified, Uronema marinum (Uronema) are both ciliate parasites similar to oodinium and Cryptocaryon irritans that infect the skin of many species of marine fish.
Team RC member
Join Date: Aug 2005
Location: Outlander
Posts: 41,247
Blog Entries: 46
Brooklynella hostilis and Uronema marinum
Introduction
Brooklynella hostilis (Brook) and the less common, and often misidentified, Uronema marinum (Uronema) are both ciliate parasites similar to oodinium and Cryptocaryon irritans that infect the skin of many species of marine fish.
OP
OP
Are you talking about the study I linked in the first post of this thread?
Flippers4pups
Fins up since 1993
Yes.
Just to mention, it was me who started this topic in R2R and I was the one who brought the topic to the present discussion, in post # 120.Part of the issue MIGHT be - that (and I'm not trying to bash @reefaholic - the OP ) is that when the thread started it was presented by the OP like it was the second coming of Jesus (or whoever you think might be coming). People even suggested he was working for the company. This started the ball rolling (at least to my reading of the first couple pages). Dr. D wasn't involved in some of the claims until later.
Having said that - I just hope Dr. D can answer the couple of questions I've asked - as well as discuss some of the research that seems to contradict his position. In the thread mentioned above by Miguel - there was a very interesting actual PICTURE of coral with RTN/WBD being treated with nothing, various antibiotics including metronidazole Metronidazole - which killed Philaster did not Halt the spread - the antibiotics (ampicillin esp) did. ND is No Disease (control), WBD is white band disease. amp is ampicillin, gent is gentamicin metronidazole is the last
Regards
OP
OP
Yeah, I had never seen that one until he posted it. I read about 1/2 of it but would like to return and read the entire study. Very interesting!
Flippers4pups
Fins up since 1993
Jose, this is from the study I've seen.
Flippers4pups
Fins up since 1993
These presentations speak to this topic:
And
And
OP
OP
#ReefSquad for more opinions from my fellow fish disease guru’s.
OP
OP
Yes, it's the same study, I brought it here: https://www.reef2reef.com/threads/probable-new-approach-in-stn-syndrome.344971/
And that was in December 2017.
Regards
Flippers4pups
Fins up since 1993
Here's some threads I started sometime ago related to this:
https://www.reef2reef.com/threads/bacteria-relationship-with-coral.336714/
https://www.reef2reef.com/threads/corals-bacteria-protozoas-oh-my.474413/
https://www.reef2reef.com/threads/bacteria-relationship-with-coral.336714/
https://www.reef2reef.com/threads/corals-bacteria-protozoas-oh-my.474413/
marlinmon
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I had numerous colonies STN/RTN in my tank over a year ago. At the same time my alkalinity, nitrates, and phosphates were all over the place. Once I got them under control the STN/RTN stopped. I have a colonies halfway gone that survived. Are these protozoans you mentioned sensitive to the parameters of the tank? Interesting hypothesis, I wish it was true, but I find it difficult to believe that they are the only reason for RTN.
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