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A fish kill associated with a bloom of Amphidinium carterae in a coastal lagoon in Sydney, Australia

Citation

Murray, SA and Kohli, GS and Farrell, H and Spiers, ZB and Place, AR and Dorantes Aranda, JJ and Ruszczyk, J, A fish kill associated with a bloom of Amphidinium carterae in a coastal lagoon in Sydney, Australia, Harmful Algae, 49 pp. 19-28. ISSN 1568-9883 (2015) [Refereed Article]

Copyright Statement

© 2015 Elsevier B.V. All rights reserved.

DOI: doi:10.1016/j.hal.2015.08.003

Abstract

We report on a dense bloom (∼1.80 × 105 cells mL−1) of the marine dinoflagellate species Amphidinium carterae (Genotype 2) in a shallow, small intermittently open coastal lagoon in south eastern Australia. This bloom co-occurred with the deaths of >300 individuals of three different species of fish. The opening of the lagoon to the ocean, as well as localized high nutrient levels, preceded the observations of very high cell numbers. A. carterae is usually benthic and sediment-dwelling, but temporarily became abundant throughout the water column in this shallow (<2 m) sandy habitat. Histopathological results showed that the Anguilla reinhardtii individuals examined had damage to epithelial and gill epithelial cells. An analysis of the bloom water indicated the presence of a compound with a retention time and UV spectra similar to Luteophanol A, a compound known from a strain of Amphidinium. Assays with a fish gill cell line were conducted using a purified compound from cells concentrated from the bloom, and was found to cause a loss of 87% in cell viability in 6 h. The fish deaths were likely due to the low dissolved oxygen levels in the water and/or the presence of Luteophanol A-like compounds released during the bloom.

Item Details

Item Type:Refereed Article
Keywords:toxic algae, algal blooms, ichthyotoxicity
Research Division:Biological Sciences
Research Group:Other Biological Sciences
Research Field:Biological Sciences not elsewhere classified
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Coastal and Estuarine Flora, Fauna and Biodiversity
Author:Dorantes Aranda, JJ (Dr Juan Dorantes Aranda)
ID Code:103320
Year Published:2015
Web of Science® Times Cited:4
Deposited By:IMAS Research and Education Centre
Deposited On:2015-10-05
Last Modified:2017-10-31
Downloads:0

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