| 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 |
