About: Oodinium

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Oodinium is a genus of parasitic dinoflagellates. Their hosts are 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. Treatment is possible by diluting the commercially available copper salts. Free swimming dinospores are extremely vulnerable to copper compounds. Bringing the water temperature to 30°C helps to release the dinospore from the cyst.

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  • Oodinium (también conocido como Piscinoodinium) es un género de dinoflagelados parásitos microscópicos.​ Viven tanto en agua dulce como salada, causando a los peces la enfermedad de la piel de terciopelo. En el pez se desarrollan unas pequeñísimas manchas de color amarillo oro que parecen espolvoreadas o dispersas en cabeza, aletas y cuerpo. En este momento, la infestación ya es grave. El ataque generalmente comienza en las branquias, etapa que es difícil de detectar. El huésped está irritado y con frecuencia nada al azar mientras se roza contra las rocas. Las manchas amarillentas son más perceptibles bajo la luz artificial o del sol. Los síntomas son muy similares a Ichthyophthirius, aunque en Oodinium las manchas son más pequeñas y de color amarillento. El ciclo de vida de Oodinium comienza como una dinospora que flota en el agua en busca de un huésped. Cuando se adhiere a la piel del huésped, forma una coraza que la protege contra el medio exterior mientras se alimenta de las células de la piel. Esta es la etapa del quiste que se aparece como un polvo que cubre la piel de pez. Después de unos días, el quiste se hunde hasta el fondo, liberando una nueva generación de dinosporas. Y el ciclo se repite. La dinospora debe encontrar un huésped dentro de las siguientes 48 horas, de lo contrario, la dinospora muere. El tratamiento se realiza mediante una dilución de sales de cobre disponible comercialmente. Las dinosporas son extremadamente vulnerables al cobre. Poniendo la temperatura del agua a 30 °C se contribuye a la liberación de las dinosporas de los quistes. (es)
  • Oodinium is a genus of parasitic dinoflagellates. Their hosts are 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. The host typically develops a 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 observe. The host fish is irritated, and often sporadically darts about or rubs itself against rocks. The yellowish spots are more vivid under a strong light source. 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 a new generation of dinospores. As the cycle repeats, the dinospore must find a host within 48 hours or else die. Treatment is possible by diluting the commercially available copper salts. Free swimming dinospores are extremely vulnerable to copper compounds. Bringing the water temperature to 30°C helps to release the dinospore from the cyst. (en)
  • Oodinium è un genere di dinoflagellati parassiti unicellulari dei pesci. Si tratta dell'agente patogeno della malattia nota come oodiniasi, frequente nei pesci d'acquario sia d'acqua dolce che marina. (it)
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  • Oodinium (en)
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  • Chatton, 1912 (en)
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  • Oodinium amylaceum (en)
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  • Oodinium (en)
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  • Oodinium limneticum (en)
  • Oodinium pillularis (en)
  • Oodinium pouchetii (en)
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  • Species (en)
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  • Oodinium è un genere di dinoflagellati parassiti unicellulari dei pesci. Si tratta dell'agente patogeno della malattia nota come oodiniasi, frequente nei pesci d'acquario sia d'acqua dolce che marina. (it)
  • Oodinium (también conocido como Piscinoodinium) es un género de dinoflagelados parásitos microscópicos.​ Viven tanto en agua dulce como salada, causando a los peces la enfermedad de la piel de terciopelo. En el pez se desarrollan unas pequeñísimas manchas de color amarillo oro que parecen espolvoreadas o dispersas en cabeza, aletas y cuerpo. En este momento, la infestación ya es grave. (es)
  • Oodinium is a genus of parasitic dinoflagellates. Their hosts are 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. Treatment is possible by diluting the commercially available copper salts. Free swimming dinospores are extremely vulnerable to copper compounds. Bringing the water temperature to 30°C helps to release the dinospore from the cyst. (en)
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  • Oodinium (es)
  • Oodinium (it)
  • Oodinium (en)
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  • Oodinium (en)
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