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Download fileInfluence of intracellular toxin concentrations on cylindrospermopsin bioaccumulation in a freshwater gastropod (Melanoides tuberculata)
journal contribution
posted on 2017-12-06, 00:00 authored by Susan KinnearSusan Kinnear, Leo Duivenvoorden, Larelle FabbroLarelle Fabbro, G EagleshamScant information is available regarding the bioaccumulation of cylindrospermopsin (CYN) in aquatic organisms, particularly in invertebrates. This study examined toxin bioconcentration and bioaccumulation in the aquatic snail, Melanoides tuberculata, following exposure to freeze-thawed whole cell extracts and a live Cylindrospermopsis raciborskii culture containing CYN. Both bioconcentration and bioaccumulation were evident, but exposure to toxin in the freeze-thawed solutions resulted in minor tissue contamination in comparison that resulting from live C. raciborskii exposure. Thus, whilst CYN uptake resulted from both extracellular and intracellular exposures, the availability of intracellular toxin was critical in affecting tissue CYN values. M. tuberculata did not bioconcentrate CYN into the shell. Bioaccumulation of the analog deoxy-CYN was also recorded. Knowledge of intracellular toxin concentrations may be critical in evaluating the bioaccumulation, ecological and human health risks associated with contaminated systems. Keywords: Cylindrospermopsis raciborskii, bioaccumulation, bioconcentration, blue-green algae, cyanobacteria, deoxy-cylindrospermopsin.
Funding
Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)
History
Volume
47Issue
5Start Page
497End Page
509Number of Pages
13ISSN
0041-0101Location
OxfordPublisher
ElsevierPublisher DOI
Full Text URL
Language
en-ausPeer Reviewed
- Yes
Open Access
- No
External Author Affiliations
Centre for Environmental Management; Centre for Plant and Water Science; Scientific Services; TBA Research Institute;Era Eligible
- Yes