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Title Effects of copper on early life history stages of northern anchovy, Engraulis mordax
Creator/Author Rice, D.W. Jr. (Univ. of California, Livermore) ; Harrison, F.L. ; Jerald, A. Jr.
Publication Date1980 Jul 01
OSTI IdentifierOSTI ID: 6482198
Other Number(s)CODEN: FSYBA
Resource TypeJournal Article
Resource RelationFish. Bull. ; Vol/Issue: 78:3
Subject560305 -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987); ;COPPER-- BIOLOGICAL EFFECTS;FISHES-- MORTALITY; BIOASSAY;EMBRYOS;LARVAE
Related SubjectANIMALS;AQUATIC ORGANISMS;ELEMENTS;METALS;TRANSITION ELEMENTS;VERTEBRATES
Description/Abstract 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.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 675-683
System Entry Date2001 May 13

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