Ich, Velvet, Brook, Uronema - Microscopic ID

[Humblefish]

BIG THANKS to Dr. Charlie Gregory for providing these slides/videos. His website can be found here: https://www.aquaveterinarian.com

Marine Ich (Cryptocaryon irritans)



Marine Velvet Disease (Amyloodinium ocellatum)



Brooklynella hostilis



Uronema marinum



​

Also see: Taking a skin scrape


EDIT: Apparently sometimes Velvet trophonts have a rhizoid root-like structure:

Source: http://pubs.sciepub.com/marine/5/1/3/figure/10

 

[JaimeAdams]

THANKS

 

[dwest]

That’s awesome!

 

[Zoaologist]

Very cool thank you

 

[Big G]

Bookmarking . . . now! Again more of your outstanding efforts to improve the hobby. Thanks again ;)

 

[Manthanol]

This is great! Thank you!

 

[Humblefish]

Bookmarking . . . now! Again more of your outstanding efforts to improve the hobby. Thanks again ;)

The respect is mutual brother! :)

 

[Reef AquaCult]

BIG THANKS to Dr. Charlie Gregory for providing these slides/videos. His website can be found here: https://www.aquaveterinarian.com

Marine Ich (Cryptocaryon irritans)



Marine Velvet Disease (Amyloodinium ocellatum)



Brooklynella hostilis



Uronema marinum
​

Thank you very much for this info

 

[Humblefish]

Fig. 1. Cryptocaryon irritans. Illustrations in the double-layered medium (A to F) and further development after transfer to seawater (G to I). (A) Theront just after inoculation, (B) trophont at Hour 4 PI, (C) trophont in a hollow-like empty space, (D) fully developed trophonts, (E) ruptured trophont (right), (F) tomont-like cyst formed in a medium, (G) protomonts just after transfer from medium to seawater, (H) encysted tomonts produced with the in vitro culture technique and (I) theront released from a tomont produced by the in vitro culture technique. Scale bars = 100 µm (A, B, F), 200 µm (C, D, E, G, H), and 25 µm (I)

 

[DungSl1nger]

Thank you for this information.

 

[javisaman]

Very cool. Thanks!

 

[jpcaram]

I just got a bunch of emerald crabs from a place I don't trust. Could I scrape their shells and observe under the microscope for disease that would hurt my fish as an alternative for a very long quarantine?

 

[sc50964]

I just got a bunch of emerald crabs from a place I don't trust. Could I scrape their shells and observe under the microscope for disease that would hurt my fish as an alternative for a very long quarantine?

idk if you will get a response from humble fish as he isn’t so active on R2R these days.

 

[jpcaram]

idk if you will get a response from humble fish as he isn’t so active on R2R these days.

Thanks for the notice. Perhaps I should start a new thread with this?

 

[Jay Hemdal Verified Community Expert]

Thanks for the notice. Perhaps I should start a new thread with this?

Yes, if the crabs came from a tank with an active fish infection, to could carry over to your tank/fish. Here is an article I posted on biosecurity:

https://www.reef2reef.com/ams/biosecurity.812/
Jay

 

[jpcaram]

Yes, if the crabs came from a tank with an active fish infection, to could carry over to your tank/fish. Here is an article I posted on biosecurity:

https://www.reef2reef.com/ams/biosecurity.812/
Jay

Hi Jay, thanks for the link.

I knew the crabs could carry diseases from fish. My question was about trying to take a sample (swabbing the shell) and checking under the microscope as an alternative to quarantine. And if so, what would be the correct procedure for this.

I believe this could be an interesting possibility. Quarantining is a "blind" approach. You do it because you don't know what your critters are carrying. But microscopy changes this, especially in the cases of CUC where you can easily take samples.

Thanks!

JP