The University of Southampton
University of Southampton Institutional Repository

Epiphytic abundance and toxicity of Prorocentrum lima populations in the Fleet Lagoon, UK

Epiphytic abundance and toxicity of Prorocentrum lima populations in the Fleet Lagoon, UK
Epiphytic abundance and toxicity of Prorocentrum lima populations in the Fleet Lagoon, UK
Planktonic Dinophysis spp. and epiphytic Prorocentrum lima (Ehrenberg) Dodge are known dinoflagellate producers of okadaic acid (OA) and dinophysistoxins (DTX), causative phycotoxins of diarrhetic shellfish poisoning (DSP). Underestimation of toxic dinoflagellates associated with a toxic event may be due to the lack of sampling of species with epiphytic and epibenthic strategies, such as P. lima. As Dinophysis spp. is not found in the Fleet Lagoon, Dorset, but previous DSP events have closed the Crassostrea gigas oyster farm, P. lima is the most likely causative organism. A field assay for separating microalgal epiphytes and concentrating wild cells on to filters was successfully applied to sub-samples of a variety of macroalgae and macrophytes (seagrass) collected from the Fleet during summer 2002. P. lima was present in increasing cell densities on most substratum species, over the sampling period, from 102 to 103 cells g?1 fresh weight (FW) plant biomass. LC–MS analysis detected OA and DTX-1 in extracts of wild P. lima cells, in ratios characteristic of P. lima strains previously isolated from the Fleet. No toxins, however, were detected in oyster flesh.
diarrhetic shellfish poisoning, dinophysistoxin, epiphyte separation, macroalgae, macrophytes, okadaic acid, prorocentrum lima
1568-9883
1063-1074
Foden, J.
a44b7922-c740-4f99-aa8a-0253f2d8d7fd
Purdie, D.A.
18820b32-185a-467a-8019-01f245191cd8
Morris, S.
7e35be34-5a1e-47de-974d-663982a295cf
Nascimento, S.
5653d7e4-dad6-49d5-860f-c61b49d5c886
Foden, J.
a44b7922-c740-4f99-aa8a-0253f2d8d7fd
Purdie, D.A.
18820b32-185a-467a-8019-01f245191cd8
Morris, S.
7e35be34-5a1e-47de-974d-663982a295cf
Nascimento, S.
5653d7e4-dad6-49d5-860f-c61b49d5c886

Foden, J., Purdie, D.A., Morris, S. and Nascimento, S. (2005) Epiphytic abundance and toxicity of Prorocentrum lima populations in the Fleet Lagoon, UK. Harmful Algae, 4 (6), 1063-1074. (doi:10.1016/j.hal.2005.03.004).

Record type: Article

Abstract

Planktonic Dinophysis spp. and epiphytic Prorocentrum lima (Ehrenberg) Dodge are known dinoflagellate producers of okadaic acid (OA) and dinophysistoxins (DTX), causative phycotoxins of diarrhetic shellfish poisoning (DSP). Underestimation of toxic dinoflagellates associated with a toxic event may be due to the lack of sampling of species with epiphytic and epibenthic strategies, such as P. lima. As Dinophysis spp. is not found in the Fleet Lagoon, Dorset, but previous DSP events have closed the Crassostrea gigas oyster farm, P. lima is the most likely causative organism. A field assay for separating microalgal epiphytes and concentrating wild cells on to filters was successfully applied to sub-samples of a variety of macroalgae and macrophytes (seagrass) collected from the Fleet during summer 2002. P. lima was present in increasing cell densities on most substratum species, over the sampling period, from 102 to 103 cells g?1 fresh weight (FW) plant biomass. LC–MS analysis detected OA and DTX-1 in extracts of wild P. lima cells, in ratios characteristic of P. lima strains previously isolated from the Fleet. No toxins, however, were detected in oyster flesh.

Full text not available from this repository.

More information

Published date: 2005
Keywords: diarrhetic shellfish poisoning, dinophysistoxin, epiphyte separation, macroalgae, macrophytes, okadaic acid, prorocentrum lima

Identifiers

Local EPrints ID: 20383
URI: https://eprints.soton.ac.uk/id/eprint/20383
ISSN: 1568-9883
PURE UUID: 4688a322-76bf-4e1e-b68c-4ed5d8f4444e

Catalogue record

Date deposited: 23 Feb 2006
Last modified: 17 Jul 2017 16:28

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×