Toxicity of blooms of the cyanobacterium Trichodesmium to zooplankton

The marine filamentous bloom-forming cyanobacteria Trichodesmium thiebautii and Trichodesmium erythraeum were collected at locations in the Caribbean during January-February 1991. They were screened for toxicity using Artemia salina and several species of copepods, which were harpacticoid grazers, f...

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Bibliographic Details
Published in:Journal of applied phycology 1992-03, Vol.4 (1), p.79-86
Main Authors: HAWSER, S. P, O'NEIL, J. M, ROMAN, M. R, CODD, G. A
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied ecology
Artemia salina
Biological and medical sciences
Copepoda
Ecotoxicology, biological effects of pollution
Fundamental and applied biological sciences. Psychology
Marine
Marine and brackish environment
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Summary:The marine filamentous bloom-forming cyanobacteria Trichodesmium thiebautii and Trichodesmium erythraeum were collected at locations in the Caribbean during January-February 1991. They were screened for toxicity using Artemia salina and several species of copepods, which were harpacticoid grazers, filter-feeding calanoids, or cyclopoid copepods. Approximately 50 per cent of the 89 T. thiebautii samples caused more than 50 per cent lethality of A. salina, though none of the 16 T. erythraeum samples caused more than 25 per cent lethality. The T. thiebautii bloom samples were toxic to the calanoid and cyclopoid copepods and non-toxic to the harpacticoid grazers. In contrast, the T. erythraeum bloom samples were not toxic to any copepods tested.
ISSN:0921-8971
1573-5176
DOI:10.1007/bf00003963