Effect of Benzoylphenyl Ureas on Survival and Reproduction of the Lace Bug, <i>Leptopharsa gibbicarina</i>
The lace bug, <i>Leptopharsa gibbicarina</i> is a vector of <i>Pestalotiopsis</i> fungal complex in oil palm crops in the Americas. The effects of four benzoylphenyl ureas (BPUs) (lufenuron, novaluron, teflubenzuron, and triflumuron) were evaluated against <i>L. gibbica...
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doaj-02675f0e51434b8282931d3e91637b822021-01-07T00:00:21ZengMDPI AGInsects2075-44502021-01-0112343410.3390/insects12010034Effect of Benzoylphenyl Ureas on Survival and Reproduction of the Lace Bug, <i>Leptopharsa gibbicarina</i>Luis Carlos Martínez0Angelica Plata-Rueda1José Eduardo Serrão2Department of General Biology, Federal University of Viçosa, Viçosa 36570-000, BrazilDepartment de Entomology, Federal University of Viçosa, Viçosa 36570-000, BrazilDepartment of General Biology, Federal University of Viçosa, Viçosa 36570-000, BrazilThe lace bug, <i>Leptopharsa gibbicarina</i> is a vector of <i>Pestalotiopsis</i> fungal complex in oil palm crops in the Americas. The effects of four benzoylphenyl ureas (BPUs) (lufenuron, novaluron, teflubenzuron, and triflumuron) were evaluated against <i>L. gibbicarina</i> for toxicity, survival, reproduction, and mortality in semi-field conditions. Concentration-mortality bioassays demonstrated that novaluron (LC<sub>50</sub> = 0.33 ppm), teflubenzuron (LC<sub>50</sub> = 0.24 ppm), lufenuron (LC<sub>50</sub> = 0.17 ppm), and triflumuron (LC<sub>50</sub> = 0.42 ppm) are toxic to <i>L. gibbicarina</i> nymphs. The survival rate was 99% in control nymphs, decreasing to 50% in nymphs exposed to LC<sub>50</sub> of triflumuron, 47% in nymphs treated with lufenuron, 43% in nymphs treated with teflubenzuron, and 43% in those treated with novaluron. Sublethal concentrations of BPUs showed detrimental effects on the adult emergence, longevity, fecundity, and fertility of this insect. The mortality of nymphs caused by these insecticides was similar in both laboratory and semi-field conditions. Our results suggest that novaluron, teflubenzuron, and triflumuron are highly effective against <i>L. gibbicarina</i>, and therefore, have potential applications for this oil palm pest.https://www.mdpi.com/2075-4450/12/1/34chemical insecticidesinsect vectoroil palmpest controlreproductive parameters |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Luis Carlos Martínez Angelica Plata-Rueda José Eduardo Serrão |
spellingShingle |
Luis Carlos Martínez Angelica Plata-Rueda José Eduardo Serrão Effect of Benzoylphenyl Ureas on Survival and Reproduction of the Lace Bug, <i>Leptopharsa gibbicarina</i> Insects chemical insecticides insect vector oil palm pest control reproductive parameters |
author_facet |
Luis Carlos Martínez Angelica Plata-Rueda José Eduardo Serrão |
author_sort |
Luis Carlos Martínez |
title |
Effect of Benzoylphenyl Ureas on Survival and Reproduction of the Lace Bug, <i>Leptopharsa gibbicarina</i> |
title_short |
Effect of Benzoylphenyl Ureas on Survival and Reproduction of the Lace Bug, <i>Leptopharsa gibbicarina</i> |
title_full |
Effect of Benzoylphenyl Ureas on Survival and Reproduction of the Lace Bug, <i>Leptopharsa gibbicarina</i> |
title_fullStr |
Effect of Benzoylphenyl Ureas on Survival and Reproduction of the Lace Bug, <i>Leptopharsa gibbicarina</i> |
title_full_unstemmed |
Effect of Benzoylphenyl Ureas on Survival and Reproduction of the Lace Bug, <i>Leptopharsa gibbicarina</i> |
title_sort |
effect of benzoylphenyl ureas on survival and reproduction of the lace bug, <i>leptopharsa gibbicarina</i> |
publisher |
MDPI AG |
series |
Insects |
issn |
2075-4450 |
publishDate |
2021-01-01 |
description |
The lace bug, <i>Leptopharsa gibbicarina</i> is a vector of <i>Pestalotiopsis</i> fungal complex in oil palm crops in the Americas. The effects of four benzoylphenyl ureas (BPUs) (lufenuron, novaluron, teflubenzuron, and triflumuron) were evaluated against <i>L. gibbicarina</i> for toxicity, survival, reproduction, and mortality in semi-field conditions. Concentration-mortality bioassays demonstrated that novaluron (LC<sub>50</sub> = 0.33 ppm), teflubenzuron (LC<sub>50</sub> = 0.24 ppm), lufenuron (LC<sub>50</sub> = 0.17 ppm), and triflumuron (LC<sub>50</sub> = 0.42 ppm) are toxic to <i>L. gibbicarina</i> nymphs. The survival rate was 99% in control nymphs, decreasing to 50% in nymphs exposed to LC<sub>50</sub> of triflumuron, 47% in nymphs treated with lufenuron, 43% in nymphs treated with teflubenzuron, and 43% in those treated with novaluron. Sublethal concentrations of BPUs showed detrimental effects on the adult emergence, longevity, fecundity, and fertility of this insect. The mortality of nymphs caused by these insecticides was similar in both laboratory and semi-field conditions. Our results suggest that novaluron, teflubenzuron, and triflumuron are highly effective against <i>L. gibbicarina</i>, and therefore, have potential applications for this oil palm pest. |
topic |
chemical insecticides insect vector oil palm pest control reproductive parameters |
url |
https://www.mdpi.com/2075-4450/12/1/34 |
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