Main Title |
Effects of Ground ULV (Ultra-Low Volume) Applications of Fenthion on Estuarine Biota. 5. Responses of Field and Laboratory Estuarine Benthic Communities. |
Author |
Tagatz, M. E. ;
Plaia, G. R. ;
|
CORP Author |
Environmental Research Lab., Gulf Breeze, FL. |
Year Published |
1985 |
Report Number |
EPA/600/J-85/460 ;CONTRIB-523E; |
Stock Number |
PB87-152807 |
Additional Subjects |
Phosphorus organic compounds ;
Plankton ;
Marshes ;
Pest control ;
Field tests ;
Culcidae ;
Concentration(Composition) ;
Larvae ;
Exposure ;
Mollusca ;
Arthropoda ;
Reprints ;
Fenthion ;
Water pollution effects(Animals)
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB87-152807 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
9p |
Abstract |
The effects of fenthion on macrobenthic animals that colonized sand-filled boxes at two salt marsh sites were determined after two field sprayings within 5 days and in the laboratory after intermittent exposures that simulated field conditions. ULV ground applications for adult mosquito control resulted in water concentrations less than 0.68 micrograms fenthion/l at one site and less than 0.38 micrograms/l the other site. The average numbers of individuals and species of animals that colonized sand-filled boxes in the laboratory (during 9 wk by planktonic larvae from continuously supplied unfiltered seawater) were not significantly affected by two treatments at 1.1 micrograms fenthion/l or by four treatments at 1.3 micrograms/l. However, the average number of species in communities exposed to two treatments at 11.8 micrograms/l was significantly less than that in control communities and those exposed to lower concentrations. Mean abundances of mollusks, arthropods, and chordates were substantially but not statistically significantly, lower in concentration. |