Comparative Effects of Diquat plus Copper Sulfate on Aquatic Organisms
| Autor: | Rue S. Hestand, B. E. May, J. M. Van Dyke |
|---|---|
| Rok vydání: | 1973 |
| Předmět: |
0106 biological sciences
Copper sulfate 04 agricultural and veterinary sciences Plant Science 01 natural sciences Diquat Aquatic organisms 010602 entomology chemistry.chemical_compound chemistry Environmental chemistry 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science |
| Zdroj: | Weed Science. 21:249-253 |
| ISSN: | 1550-2759 0043-1745 |
| DOI: | 10.1017/s0043174500032240 |
| Popis: | Effects of herbicide combinations on aquatic invertebrates were evaluated in Inglis Reservoir, which is located in west coastal Florida. The addition of 6,7-dihydrodipyrido [1,2-a: 2′1′-c]pyrazinediium ion (diquat) plus the triethanolamine complex of copper sulfate (TAC) and diquat plus copper sulfate pentahydrate (CSP) for control of hydrilla (Hydrilla verticillata Casp.) decreased the number of invertebrates inhabiting the treated areas. The diquat plus CSP combination exerted the greatest effect upon invertebrate numbers. Both herbicide combinations, however, did alter significantly the number of taxonomic groups in the areas. Invertebrate declines were due more generally to resultant habitat changes (i.e., loss of hydrilla) than to direct herbicide toxicity. The response of fish to the effects of the herbicide treatments on invertebrates could be ascribed to dietary changes, decreased growth rates, and possible mortality. |
| Databáze: | OpenAIRE |
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