Effects of copper on early life history stages of northern anchovy, Engraulis mordax

Journal Article · Tue Jul 01 04:00:00 EDT 1980 · Fish. Bull.; (United States)

OSTI ID:6482198

Rice, Jr, D W ^[1]; Harrison, F L; Jerald, A Jr

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1. Univ. of California, Livermore

The sensitivity to copper of embryonic and larval stages of the northern anchovy, Engraulis mordax, was determined using a flow-through bioassay system. Northern anchovy embryos were exposed continuously from 8 to 10 hours after fertilization until hatching, and the larvae were exposed within 12 hours after hatching until yolk-sac absorption. During the testing both total copper concentrations and the percent copper in labile forms were determined. From the cumulative mortality versus measured copper exposure data, a series of median lethal concentrations (LC/sub 50/) were determined. These LC/sub 50/ values were used to construct comparative toxicity curves. The northern anchovy life stage most sensitive to copper was the embryonic stage. For northern anchovy embryos the 12-h LC/sub 50/ was 200 ..mu..g Cu/l, and the estimated incipient lethal concentrations (ILC/sub 50/) was 190 ..mu..g Cu/l; a sensitive period of embryonic development was noted prior to closure of the blastopore. The 12 hours, 24 hours, and ILC/sub 50/ for northern anchovy larvae were 460, 400, and 370..mu..g Cu/l.

• OSTI ID: 6482198
• Journal Information: Fish. Bull.; (United States), Journal Name: Fish. Bull.; (United States) Vol. 78:3; ISSN FSYBA
• Country of Publication: United States
• Language: English

Related Subjects

560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BIOASSAY
BIOLOGICAL EFFECTS
COPPER
ELEMENTS
EMBRYOS
FISHES
LARVAE
METALS
MORTALITY
TRANSITION ELEMENTS
VERTEBRATES