Effects of cowpea cultivars and neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae)

The southern armyworm Spodoptera eridania is a polyphagous species that can feed on cowpea plants. Although there is some knowledge about the resistance of cowpea cultivars, little is known on the effects of neem oil to control pest insects of cowpea in Brazil. This study aimed to evaluate the effec...

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Autores principales:	Rodrigues,Nara Elisa Lobato, Silva,Anderson Gonçalves da, Souza,Bruno Henrique Sardinha de, Costa,Eduardo Neves, Ribeiro,Zulene Antônio, Júnior,Arlindo Leal Boiça
Lenguaje:	English
Publicado:	Universidad de Tarapacá. Facultad de Ciencias Agronómicas 2015
Materias:	Vigna unguiculata Azadirachta indica southern armyworm host plant resistance natural product
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292015000400009
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spelling	oai:scielo:S0718-342920150004000092016-01-27Effects of cowpea cultivars and neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae)Rodrigues,Nara Elisa LobatoSilva,Anderson Gonçalves daSouza,Bruno Henrique Sardinha deCosta,Eduardo NevesRibeiro,Zulene AntônioJúnior,Arlindo Leal Boiça Vigna unguiculata Azadirachta indica southern armyworm host plant resistance natural product The southern armyworm Spodoptera eridania is a polyphagous species that can feed on cowpea plants. Although there is some knowledge about the resistance of cowpea cultivars, little is known on the effects of neem oil to control pest insects of cowpea in Brazil. This study aimed to evaluate the effects of cowpea cultivars combined with neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer). The experiment was carried out under environmentally controlled conditions, and set up in a 6 x 3 factorial arrangement using six cowpea cultivars and two doses of neem oil plus the control (deionized water). Free-choice and no-choice feeding preference assays were performed to assess treatment attractiveness to the larvae and leaf consumption. Duration and survival of larvae, pre-pupae, and pupae, weights of larvae and pupae, longevity of adults, sex ratio, duration of larva-to-adult period, and larval mortality after 3, 6, 12, and 24 days were recorded. Cultivars BRS Urubuquara and BR17 Gurgueia were the least consumed in the free-choice test. Neem oil at 0.35 and 0.7% reduced leaf consumption. Cultivars BRS Novaera and BR17 Gurgueia showed to be the least suitable for S. eridania development. Neem oil at both doses affected S. eridania development. Cultivars BR7 Gurgueia and BRS Novaera were moderately resistant; BR3 Tracuateua, susceptible; and Sempre Verde, Milênio, and BRS Urubuquara were highly susceptible to S. eridania.info:eu-repo/semantics/openAccessUniversidad de Tarapacá. Facultad de Ciencias AgronómicasIdesia (Arica) v.33 n.4 20152015-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292015000400009en10.4067/S0718-34292015000400009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Vigna unguiculata Azadirachta indica southern armyworm host plant resistance natural product
spellingShingle	Vigna unguiculata Azadirachta indica southern armyworm host plant resistance natural product Rodrigues,Nara Elisa Lobato Silva,Anderson Gonçalves da Souza,Bruno Henrique Sardinha de Costa,Eduardo Neves Ribeiro,Zulene Antônio Júnior,Arlindo Leal Boiça Effects of cowpea cultivars and neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae)
description	The southern armyworm Spodoptera eridania is a polyphagous species that can feed on cowpea plants. Although there is some knowledge about the resistance of cowpea cultivars, little is known on the effects of neem oil to control pest insects of cowpea in Brazil. This study aimed to evaluate the effects of cowpea cultivars combined with neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer). The experiment was carried out under environmentally controlled conditions, and set up in a 6 x 3 factorial arrangement using six cowpea cultivars and two doses of neem oil plus the control (deionized water). Free-choice and no-choice feeding preference assays were performed to assess treatment attractiveness to the larvae and leaf consumption. Duration and survival of larvae, pre-pupae, and pupae, weights of larvae and pupae, longevity of adults, sex ratio, duration of larva-to-adult period, and larval mortality after 3, 6, 12, and 24 days were recorded. Cultivars BRS Urubuquara and BR17 Gurgueia were the least consumed in the free-choice test. Neem oil at 0.35 and 0.7% reduced leaf consumption. Cultivars BRS Novaera and BR17 Gurgueia showed to be the least suitable for S. eridania development. Neem oil at both doses affected S. eridania development. Cultivars BR7 Gurgueia and BRS Novaera were moderately resistant; BR3 Tracuateua, susceptible; and Sempre Verde, Milênio, and BRS Urubuquara were highly susceptible to S. eridania.
author	Rodrigues,Nara Elisa Lobato Silva,Anderson Gonçalves da Souza,Bruno Henrique Sardinha de Costa,Eduardo Neves Ribeiro,Zulene Antônio Júnior,Arlindo Leal Boiça
author_facet	Rodrigues,Nara Elisa Lobato Silva,Anderson Gonçalves da Souza,Bruno Henrique Sardinha de Costa,Eduardo Neves Ribeiro,Zulene Antônio Júnior,Arlindo Leal Boiça
author_sort	Rodrigues,Nara Elisa Lobato
title	Effects of cowpea cultivars and neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae)
title_short	Effects of cowpea cultivars and neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae)
title_full	Effects of cowpea cultivars and neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae)
title_fullStr	Effects of cowpea cultivars and neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae)
title_full_unstemmed	Effects of cowpea cultivars and neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae)
title_sort	effects of cowpea cultivars and neem oil on attractiveness, feeding, and development of spodoptera eridania (cramer) (lepidoptera: noctuidae)
publisher	Universidad de Tarapacá. Facultad de Ciencias Agronómicas
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292015000400009
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Effects of cowpea cultivars and neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae)

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