Main Title |
Effects of Chlorpyrifos on the Diet and Growth of Larval Fathead Minnows, 'Pimephales promelas', in Littoral Enclosures. |
Author |
Brazner, J. C. ;
Kline, E. R. ;
|
CORP Author |
Environmental Research Lab.-Duluth, MN. ;Wisconsin Univ.-Superior. Center for Lake Superior Environmental Studies. |
Publisher |
c1990 |
Year Published |
1990 |
Report Number |
EPA/600/J-90/250; |
Stock Number |
PB91-144956 |
Additional Subjects |
Water pollution effects(Animals) ;
Dursban ;
Feeding behavior ;
Littoral zone ;
Freshwater fishes ;
Growth ;
Larvae ;
Body weight ;
Reprints ;
Pimephales promelas
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB91-144956 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
11p |
Abstract |
A series of 12 littoral enclosures constructed within a 2 ha, mesotrophic pond near Duluth, Minnesota were used to determine if sublethal concentrations of the insecticide chlorpyrifos (0,0,-diethyl 0-(3,5,6-trichloro-2-pyridyl) phosphorothioate) could lead to changes in the diet and growth of fathead minnow larvae. Chlorpyrifos was added to the enclosures at nominal concentrations of 0.0, 0.5, 5.0, and 20.0 microgram/L in a single application on June 16, 1986. Growth rates of larvae were significantly reduced in the treated enclosures during the 32-d study period. The most dramatic differences in the mean size of larvae from the four treatment groups were observed 15 d posttreatment. These differences corresponded to the most significant reductions in cladoceran, copepod, rotifer, and chironomid populations in the treated enclosures. These results indicate that toxicity to chlorpyrifos-sensitive invertebrate forage species forced dietary changes that led to reduced growth of native fathead minnow larvae in the treated enclosures. |
Supplementary Notes |
Pub. in Canadian Jnl. of Fisheries and Aquatic Science, v47 p1157-1165 Jun 90. Prepared in cooperation with Wisconsin Univ.-Superior. Center for Lake Superior Environmental Studies. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Effects of Chlorpyrifos on the Diet and Growth of Larval Fathead Minnows, 'Pimephales promelas', in Littoral Enclosures. |
Category Codes |
68E; 68D; 57Y; 57H |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/03 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
109129942 |
Origin |
NTIS |
Type |
CAT |