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Zinc toxicity to the mottled sculpin ( Cottus bairdt ) in high‐hardness water
Author(s) -
Brinkman Stephen,
Woodling John
Publication year - 2005
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1897/04-235r.1
Subject(s) - sculpin , toxicity , zinc , cottus , toxicology , chronic toxicity , biology , acute toxicity , fish <actinopterygii> , zoology , chemistry , environmental chemistry , fishery , organic chemistry
Abstract The median 96‐h lethal zinc concentration (LC50) was 439 μg Zn/L (hardness of 154 mg/L as CaCO 3 ) for feral mottled sculpin ( Cottus bairdi ), decreasing to a median incipient lethal level of 266 μg Zn/L after 13 d. The 30‐d chronic value was 255 μg Zn/L. The acute toxicity‐hardness (ln‐ln) slope of 1.022 exceeded that of the current U.S. Environmental Protection Agency zinc criteria. The mottled sculpin is the second most sensitive fish species for which toxicity data are available.