Lethal and sublethal effects after treatment with conventional and biorational insecticides on eggs of <i>Chrysoperla externa</i> (Neuroptera: Chrysopidae)

The neuropteran <i>Chrysoperla externa</i> is a generalist predator of many important agricultural pests in the Neotropical region. It occurs on several agricultural crops, and therefore it can be affected by pesticides. Here, the lethal and sublethal effects of conventional and bioratio...

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Autor principal: Haramboure, Marina
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Naturales
IPM
Neotropical region
Neuropterans
Pesticides
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87453
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87453
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
IPM
Neotropical region
Neuropterans
Pesticides
spellingShingle Ciencias Naturales
IPM
Neotropical region
Neuropterans
Pesticides
Haramboure, Marina
Lethal and sublethal effects after treatment with conventional and biorational insecticides on eggs of <i>Chrysoperla externa</i> (Neuroptera: Chrysopidae)
topic_facet Ciencias Naturales
IPM
Neotropical region
Neuropterans
Pesticides
description The neuropteran <i>Chrysoperla externa</i> is a generalist predator of many important agricultural pests in the Neotropical region. It occurs on several agricultural crops, and therefore it can be affected by pesticides. Here, the lethal and sublethal effects of conventional and biorational insecticides were assessed against <i>C. externa</i> eggs. The exposure method consisted on immersion of eggs in solutions with the maximum field recommended concentration of 25 mg a.i./L cypermethrin, 200 mg a.i./L acetamiprid, 40 mg a.i./L azadirachtin and 75 mg a.i./L pyriproxyfen. The viability of the eggs was not affected, but 100 % of the neonates from eggs treated with cypermethrin died after 48 h. Larvae from eggs treated with acetamiprid, azadirachtin and pyriproxyfen survived to the adult stage, with survival rates of 75 %, 70.6 % and 84.6 %, respectively. Regarding the reproductive parameters, the preoviposition period was not affected but the fecundity and fertility were lower with acetamiprid and pyriproxyfen, showing the sublethal effects of the insecticides acting in the adult stage.
format Articulo
Articulo
author Haramboure, Marina
author_facet Haramboure, Marina
author_sort Haramboure, Marina
title Lethal and sublethal effects after treatment with conventional and biorational insecticides on eggs of <i>Chrysoperla externa</i> (Neuroptera: Chrysopidae)
title_short Lethal and sublethal effects after treatment with conventional and biorational insecticides on eggs of <i>Chrysoperla externa</i> (Neuroptera: Chrysopidae)
title_full Lethal and sublethal effects after treatment with conventional and biorational insecticides on eggs of <i>Chrysoperla externa</i> (Neuroptera: Chrysopidae)
title_fullStr Lethal and sublethal effects after treatment with conventional and biorational insecticides on eggs of <i>Chrysoperla externa</i> (Neuroptera: Chrysopidae)
title_full_unstemmed Lethal and sublethal effects after treatment with conventional and biorational insecticides on eggs of <i>Chrysoperla externa</i> (Neuroptera: Chrysopidae)
title_sort lethal and sublethal effects after treatment with conventional and biorational insecticides on eggs of <i>chrysoperla externa</i> (neuroptera: chrysopidae)
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/87453
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bdutipo_str Repositorios
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