Ammonia as confounding factor in toxicity tests with the sea urchinParacentrotus lividus(Lmk)

Autor:	Volpi Ghirardini Annamaria, Arizzi Novelli Alessandra, Losso Chiara, Picone Marco
Rok vydání:	2003
Předmět:	biology Health Toxicology and Mutagenesis Confounding biology.organism_classification Blastula Pollution Paracentrotus lividus Toxicology Ammonia chemistry.chemical_compound chemistry Environmental chemistry biology.animal Toxicity Environmental Chemistry Bioassay Sea urchin EC50
Zdroj:	Toxicological & Environmental Chemistry. 85:183-191
ISSN:	1029-0486 0277-2248
Popis:	The aim of this study was to investigate the toxicity of total ammonia towards sea urchin bioassays, in order to elucidate the role of ammonia as confounding factor in sediment quality assessment studies. New toxicity data, expressed as EC50, NOEC and LOEC are reported for Paracentrotus lividus based on experiments at differing pH values. Results confirmed that sperm cell toxicity test is not very sensitive to ammonia, while total ammonia embryotoxicity is strictly pH dependent. Accurate observations of embryotoxic effects at increasing total ammonia concentrations evidenced progressive shifts from malformed plutei to gastrula and blastula blockages. Toxicity data obtained for P. lividus are comparable with previous results with other echinoid species.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::31563b6ca1fb8f0c9c9552d4366c4d7d https://doi.org/10.1080/02772240410001665418 Zobrazit plný text záznamu