Skip to main content
hyi
Banner
banner
bn

Costridium botulinum (type E) occurs and grows in the alga, Cladophoraglomerata

This article is now listed as in press by the Canadian Journal of  Fisheries and Aquatic Sciences.  The article highlights occurrence of  the pathogens C. botulinum and C. perfringens in this alga in waters  around Sleeping Bear Dunes and growth in a simple algal mesosm.. We  can now add these bacteria to the growing list of pathogens now  documented in these nuisance mats of algae.    In recent years, massive avian die-offs from C. botulinum  Type E infection have occurred in the Sleeping Bear Dunes National  Lakeshore (SLBE) area of Lake Michigan. These outbreaks have been  coincidental with massive blooms of the green algae, Cladophora, mostly  C. glomerata.  We tested the hypothesis that Clostridium botulinum  (Type E) can grow under suitable conditions in these algal mats.  In a  lab mesocosm study, Cladophora from four outbreak impacted beaches  from Sleeping Bear were compared to four un-impacted beaches in the  Milwaukee/Racine area for BontE gene of C. botulinum.  BontE gene  frequency was higher after incubation (25°C for up to 6 weeks) of  Cladophora from impacted vs. the un-impacted area.  Since no Type E  gene was detected initially in Cladophora from any of the eight  locations, we infer that the increased occurrence of Type E gene arose  from spore germination or vegetative Clostridium growth within the  existing algal mats of SLBE.  Moreover, we found that the congener,  Clostridium perfringens (C. perfringens), readily grows in mesocosms  containing  Cladophora. 

Status
In progress
Type
Project
Start Date
End Date
Researchers
Richard WhitmanPrincipal Investigator
Associated with 1 projects
Agencies

Funding 2 projects for a total of $8,025.00
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Biochemical
Organism
Impact of Pollutants
Nutrients, Including Phosphorus
Lake Basin Connecting Channels
Lake Michigan
State Province
Wisconsin
Annex Numbers
Pollution from Non-Point Sources
Research & Development
Annex 17
Cause-effect inter-relationships of productivity and ecotoxicity
Physical and transformational processes affecting delivery of pollutants
General
Annex
  • Annex Numbers
    Annex Numbers
    Pollution from Non-Point Sources
    Research & Development
  • Annex 17
    Annex 17
    Cause-effect inter-relationships of productivity and ecotoxicity
    Physical and transformational processes affecting delivery of pollutants

The Great Lakes - St. Lawrence Research Inventory is an
interactive, Internet-based, searchable database created as a tool to collect and disseminate
up-to-date information about research projects in the
Great Lakes - St. Lawrence Region.