Mortalities of Eastern and Pacific Oyster Larvae Caused by the Pathogens Vibrio coralliilyticus and Vibrio tubiashii Public Deposited

http://ir.library.oregonstate.edu/concern/articles/1v53jz72g

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by the American Society for Microbiology and can be found at:  http://aem.asm.org/.

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Vibrio tubiashii is reported to be a bacterial pathogen of larval Eastern oysters (Crassostrea virginica) and Pacific oysters (Crassostrea gigas) and has been associated with major hatchery crashes, causing shortages in seed oysters for commercial shellfish producers. Another bacterium, Vibrio coralliilyticus, a well-known coral pathogen, has recently been shown to elicit mortality in fish and shellfish. Several strains of V. coralliilyticus, such as ATCC 19105 and Pacific isolates RE22 and RE98, were misidentified as V. tubiashii until recently. We compared the mortalities caused by two V. tubiashii and four V. coralliilyticus strains in Eastern and Pacific oyster larvae. The 50% lethal dose (LD₅₀) of V. coralliilyticus in Eastern oysters (defined here as the dose required to kill 50% of the population in 6 days) ranged from 1.1 x 10⁴ to 3.0 x 10⁴ CFU/ml seawater; strains RE98 and RE22 were the most virulent. This study shows that V. coralliilyticus causes mortality in Eastern oyster larvae. Results for Pacific oysters were similar, with LD₅₀s between 1.2 x 10⁴ and 4.0 x 10⁴ CFU/ml. Vibrio tubiashii ATCC 19106 and ATCC 19109 were highly infectious toward Eastern oyster larvae but were essentially nonpathogenic toward healthy Pacific oyster larvae at dosages of ≥ 1.1 x 10⁴ CFU/ml. These data, coupled with the fact that several isolates originally thought to be V. tubiashii are actually V. coralliilyticus, suggest that V. coralliilyticus has been a more significant pathogen for larval bivalve shellfish than V. tubiashii, particularly on the U.S. West Coast, contributing to substantial hatchery-associated morbidity and mortality in recent years.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Richards, G. P., Watson, M. A., Needleman, D. S., Church, K. M., & Häse, C. C. (2015). Mortalities of Eastern and Pacific oyster larvae caused by the pathogens Vibrio coralliilyticus and Vibrio tubiashii. Applied and Environmental Microbiology, 81(1), 292-297. doi:10.1128/AEM.02930-14
Series
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Erin Clark(erin.clark@oregonstate.edu) on 2015-02-17T21:30:13Z (GMT) No. of bitstreams: 1 HäseClaudiaVetMedMortalitiesEasternPacific.pdf: 341998 bytes, checksum: 73408210b0707f42d61e88962b356d5b (MD5)
  • description.provenance : Made available in DSpace on 2015-02-17T21:30:13Z (GMT). No. of bitstreams: 1 HäseClaudiaVetMedMortalitiesEasternPacific.pdf: 341998 bytes, checksum: 73408210b0707f42d61e88962b356d5b (MD5) Previous issue date: 2015-01
  • description.provenance : Submitted by Erin Clark (erin.clark@oregonstate.edu) on 2015-02-17T21:29:58Z No. of bitstreams: 1 HäseClaudiaVetMedMortalitiesEasternPacific.pdf: 341998 bytes, checksum: 73408210b0707f42d61e88962b356d5b (MD5)

Relationships

In Administrative Set:
Last modified: 07/26/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items