Ejercicio interlaboratorio con bioensayos marinos para la evaluación de la calidad ambiental de sedimentos costeros. III. Bioensayo con embriones del erizo de mar "Paracentrotus lividus"
- M.C. Casado Martínez 1
- N. Fernández 1
- J. Lloret 2
- A. Marín 2
- C. Martínez Gómez 3
- I. Riba 4
- R. Beiras 5
- L. Saco Álvarez 5
- T.A. DelValls 1
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1
Universidad de Cádiz
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2
Universidad de Murcia
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- 3 Instituto Español de Oceanografía, Centro Oceanográfico de Murcia,
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4
Instituto de Ciencias Marinas de Andalucía
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5
Universidade de Vigo
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ISSN: 0185-3880, 2395-9053
Year of publication: 2006
Volume: 32
Issue: 1
Pages: 139-147
Type: Article
More publications in: Ciencias marinas
Abstract
The present paper reports the results of an interlaboratory variability study of a bioassay using larval stages of the marine sea urchin "Paracentrotus lividus". This exercise was developed in two different phases and included four laboratories, each of which determined the toxicity of six sediment samples. The samples were collected from different Spanish ports and were characterized by exposing sea urchin embryos for 48 h to sediment elutriates. Phase I was used to redesign test parameters and to avoid possible interfering factors when interpreting test results. Laboratories were more homogeneous in the classification of sediments according to the toxic responses in Phase II despite the high variability of the elutriate testing protocols. Based on our results, the test seems suitable to characterize dredged material, the interlaboratory variability being similar to that found for other bioassays in previous studies.