Cases of shell disease in the giant oyster Crassostrea gigas (Bivalvia) cultivated in the Black Sea

Cases of shell disease in the giant oyster Crassostrea gigas (Bivalvia) cultivated in the Black Sea This paper presents the first description of shell disease in the Crassostrea gigas oyster cultivated in the Black Sea. The shell margin, hinge and the site of adductor muscle attachment are affected by a fungus. The oyster’s exhaustion caused by excessive sedimentation results in high susceptibility to disease. It is suggested that spores of the fungus Ostracoblabe implexa were found in the silt. The disease was discovered in oysters that were lacking growth zones or that had died. Microphotos show the fungus’s ramified hyphae, 1.5–3 μm in diameter, with nodes and septa located in the fragments of affected oyster nacre matrix. They also show the close contact between two hyphae and the presence of “suckers” spreading from the mycelium to the bells of aragonite. We discuss the issue of a temporary symbiosis between the fungus and the microalga Coccolithus pelagicus, which could explain the adaptability of the fungus and the fact that its life cycle continues after the death of infected oysters. Russian Journal of Marine Biology Springer Journals

Cases of shell disease in the giant oyster Crassostrea gigas (Bivalvia) cultivated in the Black Sea

Loading next page...
SP MAIK Nauka/Interperiodica
Copyright © 2008 by MAIK Nauka
Life Sciences; Freshwater & Marine Ecology
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial