Comparative toxicity of dissolved metals to early larval stages of palaemon serratus, Maja squinado, and Homarus gammarus (Crustacea:Decapoda)

• Published in: Archives of environmental contamination and toxicology 2000-10, Vol.39 (3), p.345-351
• Main Authors: MARINO-BALSA, J. C, POZA, E, VAZQUEZ, E, BEIRAS, R
• Format: Article
• Language: English
• Subjects: Animal, plant and microbial ecology; Animals; Applied ecology; Bioassays; Biological and medical sciences; Brachyura; Cadmium; Chromium; Confidence intervals; Crustacea - growth & development; Crustacea - physiology; Crustaceans; Decapoda; Ecotoxicology, biological effects of pollution; Effects of pollution and side effects of pesticides on protozoa and invertebrates; Fecundity; Fundamental and applied biological sciences. Psychology; Heavy metals; Homarus americanus; Homarus gammarus; Larva; Larvae; Maja squinado; Marine; Mercury; Metals, Heavy - toxicity; Nephropidae; Palaemon serratus; Palaemonidae; Seawater; Toxicity; Water Pollutants, Chemical - toxicity; Water quality
• ISSN: 0090-4341; 1432-0703
• DOI: 10.1007/s002440010114

The acute lethal toxicities of mercury, copper, and cadmium to the first larval stage of the prawn (Palaemon serratus), spider crab (Maja squinado), and lobster (Homarus gammarus) were tested. Chromium was also tested with the prawn. Mortality was recorded after 48 h (for lobster) or 72 h (for other species) incubation at 18 degrees C, and the median lethal concentrations (LC(50) +/- 95% confidence intervals) per individual and per mass unit were calculated. The LC(50) values were, 74 microg Hg/L, 3,304 microg Cu/L, 1,686 microg Cd/L, 12,486 microg Cr/L for prawn; 72 microg Hg/L, 50 microg Cu/L, 158 microg Cd/L for spider crab; and 48 microg Hg/L, 46 microg Cu/L, 34 microg Cd/L for lobster. Therefore, larvae of spider crab and lobster were markedly more sensitive than prawn to heavy metals and thus more suitable to use in seawater quality bioassays. Of these two species, spider crab is recommended due to its abundance, easier maintenance, and higher fecundity. The mercury LC(50) values for different larval stages of P. serratus (zoea I, II, V, and VI) were obtained, and no ontogenetic change in sensitivity to the metal could be detected.