World Library  
Flag as Inappropriate
Email this Article

Oodinium

Article Id: WHEBN0006332900
Reproduction Date:

Title: Oodinium  
Author: World Heritage Encyclopedia
Language: English
Subject: Bath treatment (fishkeeping), Disease in ornamental fish, Dinoflagellate, Zebrafish, Algae
Collection: Dinoflagellates, Dinoflagellates Genera
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Oodinium

Oodinium infected fish. Clearly visible gold dust on the head.

Oödinium (also known as Piscinoodinium) is a genus of microscopic parasitic dinoflagellates. They live off salt and fresh water fish, causing a type of fish velvet disease (also called gold dust disease). One species has also been recorded on various cnidarians [1].

The host typically develops small yellow or gold dust scattered on its head, fins and body. At this stage, the infestation is already severe. The attack usually starts at the gills at which stage it is difficult to notice. The host is irritated and often swims in fuzziness while rubbing itself against rocks. The yellowish spots are more vivid under sunlight or flashlight. It is very similar to Ichthyophthirius, though the oodinium spots are yellowish and smaller.

The life cycle of oodinium starts as a dinospore that swims in the water to look for a suitable host. As it attaches itself onto the host skin, it forms a hard shell protecting itself against the outside environment while it is eating the fish skin cells. This is the cyst stage seen as dust covering the fish skin. After few days, the cyst sinks to the bottom, freeing new generation of dinospores. And the cycle repeats. The dinospore must find a host within 48 hours, otherwise the dinospore would die.

Treatment is possible by diluting the commercially available copper salts. Free swimming dinospore is extremely vulnerable to copper. Bringing the water temperature to 30°C helps to release the dinospore from cyst.

See also

References

  1. ^ Chatton, E. (1912). Diagnose préliminaires de Péridiniens parasites nouveaux. Bulletin de la Société Zoologique de France 37: 85-93.

External links

  • Amlyodinium or Oodinium; Shawn Prescott Aquarium.Net; May 1997
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.