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Larval development ratio test with the calanoid copepod Acartia tonsa as a new bioassay to assess marine sediment quality.
Ecotoxicol Environ Saf. 2018 Mar; 149:1-9.EE

Abstract

The copepod Acartia tonsa was used as a model species to assess marine sediment quality. Acute and chronic bioassays, such as larval development ratio (LDR) and different end-points were evaluated. As a pelagic species, A. tonsa is mainly exposed to water-soluble toxicants and bioassays are commonly performed in seawater. However, an interaction among A. tonsa eggs and the first larval stages with marine sediments might occur in shallow water environments. Here we tested two different LDR protocols by incubating A. tonsa eggs in elutriates and sediments coming from two areas located in Tuscany Region (Central Italy): Livorno harbour and Viareggio coast. The end-points analyzed were larval mortality (LM) and development inhibition (DI) expressed as the percentage of copepods that completed the metamorphosis from nauplius to copepodite. Aims of this study were: i) to verify the suitability of A. tonsa copepod for the bioassay with sediment and ii) to compare the sensitivity of A. tonsa exposed to different matrices, such as water and sediment. A preliminary acute test was also performed. Acute tests showed the highest toxicity of Livorno's samples (two out of three) compared to Viareggio samples, for which no effect was observed. On the contrary, LDR tests with sediments and elutriates revealed some toxic effects also for Viareggio's samples. Results were discussed with regards to the chemical characterization of the samples. Our results indicated that different end-points were affected in A. tonsa, depending on the matrices to which the copepods were exposed and on the test used. Bioassays with elutriates and sediments are suggested and LDR test could help decision-makers to identify a more appropriate management of dredging materials.

Authors+Show Affiliations

ISPRA, Piazzale dei marmi, 12, 57123 Livorno, Italy. Electronic address: isabella.buttino@isprambiente.it.ISPRA, Piazzale dei marmi, 12, 57123 Livorno, Italy.ISPRA, Piazzale dei marmi, 12, 57123 Livorno, Italy.ISPRA, Piazzale dei marmi, 12, 57123 Livorno, Italy.ISPRA, Piazzale dei marmi, 12, 57123 Livorno, Italy.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29145160

Citation

Buttino, Isabella, et al. "Larval Development Ratio Test With the Calanoid Copepod Acartia Tonsa as a New Bioassay to Assess Marine Sediment Quality." Ecotoxicology and Environmental Safety, vol. 149, 2018, pp. 1-9.
Buttino I, Vitiello V, Macchia S, et al. Larval development ratio test with the calanoid copepod Acartia tonsa as a new bioassay to assess marine sediment quality. Ecotoxicol Environ Saf. 2018;149:1-9.
Buttino, I., Vitiello, V., Macchia, S., Scuderi, A., & Pellegrini, D. (2018). Larval development ratio test with the calanoid copepod Acartia tonsa as a new bioassay to assess marine sediment quality. Ecotoxicology and Environmental Safety, 149, 1-9. https://doi.org/10.1016/j.ecoenv.2017.10.062
Buttino I, et al. Larval Development Ratio Test With the Calanoid Copepod Acartia Tonsa as a New Bioassay to Assess Marine Sediment Quality. Ecotoxicol Environ Saf. 2018;149:1-9. PubMed PMID: 29145160.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Larval development ratio test with the calanoid copepod Acartia tonsa as a new bioassay to assess marine sediment quality. AU - Buttino,Isabella, AU - Vitiello,Valentina, AU - Macchia,Simona, AU - Scuderi,Alice, AU - Pellegrini,David, Y1 - 2017/11/13/ PY - 2017/04/05/received PY - 2017/10/24/revised PY - 2017/10/30/accepted PY - 2017/11/18/pubmed PY - 2018/5/16/medline PY - 2017/11/18/entrez KW - Chronic test KW - Development inhibition KW - Ecotoxicology KW - Larval mortality SP - 1 EP - 9 JF - Ecotoxicology and environmental safety JO - Ecotoxicol. Environ. Saf. VL - 149 N2 - The copepod Acartia tonsa was used as a model species to assess marine sediment quality. Acute and chronic bioassays, such as larval development ratio (LDR) and different end-points were evaluated. As a pelagic species, A. tonsa is mainly exposed to water-soluble toxicants and bioassays are commonly performed in seawater. However, an interaction among A. tonsa eggs and the first larval stages with marine sediments might occur in shallow water environments. Here we tested two different LDR protocols by incubating A. tonsa eggs in elutriates and sediments coming from two areas located in Tuscany Region (Central Italy): Livorno harbour and Viareggio coast. The end-points analyzed were larval mortality (LM) and development inhibition (DI) expressed as the percentage of copepods that completed the metamorphosis from nauplius to copepodite. Aims of this study were: i) to verify the suitability of A. tonsa copepod for the bioassay with sediment and ii) to compare the sensitivity of A. tonsa exposed to different matrices, such as water and sediment. A preliminary acute test was also performed. Acute tests showed the highest toxicity of Livorno's samples (two out of three) compared to Viareggio samples, for which no effect was observed. On the contrary, LDR tests with sediments and elutriates revealed some toxic effects also for Viareggio's samples. Results were discussed with regards to the chemical characterization of the samples. Our results indicated that different end-points were affected in A. tonsa, depending on the matrices to which the copepods were exposed and on the test used. Bioassays with elutriates and sediments are suggested and LDR test could help decision-makers to identify a more appropriate management of dredging materials. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/29145160/Larval_development_ratio_test_with_the_calanoid_copepod_Acartia_tonsa_as_a_new_bioassay_to_assess_marine_sediment_quality_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(17)30739-X DB - PRIME DP - Unbound Medicine ER -