Citation
Lavoie G.K., . (1990) A study of the toxicity of the anticoagulant brodifacoum to American kestrels Falco sparverius. [Proceedings Paper]
Abstract
The objective of this study was to estimate the secondary median lethal concentration LC50 to American kestrels Falco sparverius that were fed meadow voles Microtus sp. that had consumed a lethal dose of brodifacoum. Individually caged voles were offered 50 g of 100 ppm brodifacoum bait ad libtium for 4 consecutive days. Surviving voles were killed on the 5th day and their tissues were ground and mixed with ground tissues of voles that died prior to the 5th day to form a pooled sample containing 6.7 ppm brodifacoum. The pooled sample was diluted with untreated vole tissues to yield concentrations of 0.3 0 8 1.6 3.2 and 6.0 ppm brodifacoum. Five groups of eight kestrels each were fed one of these five concentrations of brodifacoum-vole tissues for 5 days. After the feeding period the birds were observed for 90 days. During the observation period a total of five birds died one each on Days 2 3 6 10 and 56. Four of the five birds that died had been fed at the 6.0 ppm level and one had been fed at the 0.8 ppm level of brodifocoum-vole tissues. These data suggest that the estimated LC50 of brodifacoum-treated vole tissues to American kestrels is near 6.0 ppm
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Abstract
The objective of this study was to estimate the secondary median lethal concentration LC50 to American kestrels Falco sparverius that were fed meadow voles Microtus sp. that had consumed a lethal dose of brodifacoum. Individually caged voles were offered 50 g of 100 ppm brodifacoum bait ad libtium for 4 consecutive days. Surviving voles were killed on the 5th day and their tissues were ground and mixed with ground tissues of voles that died prior to the 5th day to form a pooled sample containing 6.7 ppm brodifacoum. The pooled sample was diluted with untreated vole tissues to yield concentrations of 0.3 0 8 1.6 3.2 and 6.0 ppm brodifacoum. Five groups of eight kestrels each were fed one of these five concentrations of brodifacoum-vole tissues for 5 days. After the feeding period the birds were observed for 90 days. During the observation period a total of five birds died one each on Days 2 3 6 10 and 56. Four of the five birds that died had been fed at the 6.0 ppm level and one had been fed at the 0.8 ppm level of brodifocoum-vole tissues. These data suggest that the estimated LC50 of brodifacoum-treated vole tissues to American kestrels is near 6.0 ppm
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | 2 tables 7 ref. |
| AGROVOC Term: | CONTROL DE ROEDORES |
| AGROVOC Term: | RODENTICIDAS |
| AGROVOC Term: | TOPILLOS |
| AGROVOC Term: | RATA |
| AGROVOC Term: | BRODIFACUM |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:26 |
| URI: | http://webagris.upm.edu.my/id/eprint/14873 |
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