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| 14. |  | CASTILHOS, R. V.; RIBEIRO, L. P. Circadian feeding behavior of Dichelops melacanthus (Hemiptera: Pentatomidae) on maize crops. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 27., CONGRESSO LATINO-AMERICANO DE ENTOMOLOGIA, 10., 2018, Gramado, RS. Resumos... Londrina, PR: Sociedade Entomológica do Brasil, 2018.| Biblioteca(s): Epagri-Sede. |
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| 15. | | CASTILHOS, R. V.; BRUGNARA, E. C. EVALUATING BOTANICAL INSECTICIDES AGAINST Palpita forficifera (LEPIDOPTERA: CRAMBIDAE) LARVAE IN LABORATORY. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 28., ENCONTRO NACIONAL DE OLIVICULTURA, 5., 2023, Pelotas, RS. Anais... Jaboticabal, SP: SBF, 2023.| Biblioteca(s): Epagri-Sede. |
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| 17. | | CASTILHOS, R. V.; SILVA, A. K. Initial damage of Dichelops melacanthus (Hemiptera: Pentatomidae) on different maize genotypes in greenhouse condition. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 27., CONGRESSO LATINO-AMERICANO DE ENTOMOLOGIA, 10., 2018, Gramado, RS. Resumos... Londrina, PR: Sociedade Entomológica do Brasil, 2018.| Biblioteca(s): Epagri-Sede. |
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| Registros recuperados : 71 | |
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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
26/10/2018 |
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Data da última atualização: |
26/10/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CASTILHOS, R. V.; RIBEIRO, L. P. |
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Título: |
Circadian feeding behavior of Dichelops melacanthus (Hemiptera: Pentatomidae) on maize crops. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 27., CONGRESSO LATINO-AMERICANO DE ENTOMOLOGIA, 10., 2018, Gramado, RS. Resumos... Londrina, PR: Sociedade Entomológica do Brasil, 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
The green-belly stink bug Dichelops melacanthus (Hemiptera: Pentatomidae) has worried growers due it?s high incidence and intensive damage on maize initial phase. The monitoring and control of this pest with spray of insecticides are unsuccessful owing to lack of knowledge about some behavioral aspects of this pest such as its location and preferred feeding time along the day. Therefore, this work aimed to evaluate circadian rhythm of feeding of D. melacanthus on maize. For that, plants from a maize field of the genotype P30F53 VYHR were artificially infested with D. melacanthus adults. Previously to infestation, plants were covered with a cage (1m length x 0,5m width x 0,5m height) coated with a Tulle fabric. Each cage encompassed 5 plants, and 10 adults (5 couples) were released into each cage. It were used 10 cages (experimental units), randomly distributed in maize field. After 24 h hours of infestation, the behavior of the insects was evaluated by visual observations every 3 hours (6:00, 9:00, 12:00, 15:00, 18:00, 21:00 and 24:00 h), and the number of insects present in the plants (stalk and leaves) was recorded. For nocturnal evaluations, a red led flashlight was used in order to visualize the insects without driving them off. The aforementioned procedures were carried twice, at 15 and 21 days after emergence, corresponding to V3 and V5 stages, respectively. Climatic factors were monitored and correlated to insects? feeding in plants. The number of D. melacanthus on plants was low at morning period, and increased in the afternoon with peak at 15:00 h on both stages evaluated. This may indicate that a heat uptake and raise in body temperature are necessary for beginning of foraging activity (basking behavior). Most of the insects visualized in maize plants were at the stalk region (>96%), evidencing feeding behavior. The feeding activity was positively correlated with air temperature, and negatively correlated with atmospheric pressure. MenosThe green-belly stink bug Dichelops melacanthus (Hemiptera: Pentatomidae) has worried growers due it?s high incidence and intensive damage on maize initial phase. The monitoring and control of this pest with spray of insecticides are unsuccessful owing to lack of knowledge about some behavioral aspects of this pest such as its location and preferred feeding time along the day. Therefore, this work aimed to evaluate circadian rhythm of feeding of D. melacanthus on maize. For that, plants from a maize field of the genotype P30F53 VYHR were artificially infested with D. melacanthus adults. Previously to infestation, plants were covered with a cage (1m length x 0,5m width x 0,5m height) coated with a Tulle fabric. Each cage encompassed 5 plants, and 10 adults (5 couples) were released into each cage. It were used 10 cages (experimental units), randomly distributed in maize field. After 24 h hours of infestation, the behavior of the insects was evaluated by visual observations every 3 hours (6:00, 9:00, 12:00, 15:00, 18:00, 21:00 and 24:00 h), and the number of insects present in the plants (stalk and leaves) was recorded. For nocturnal evaluations, a red led flashlight was used in order to visualize the insects without driving them off. The aforementioned procedures were carried twice, at 15 and 21 days after emergence, corresponding to V3 and V5 stages, respectively. Climatic factors were monitored and correlated to insects? feeding in plants. The number of D. melacanthus on pl... Mostrar Tudo |
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Palavras-Chave: |
basking behavior; green-belly stink bug; seedling pest. |
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Categoria do assunto: |
O Insetos e Entomologia |
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Marc: |
LEADER 02630naa a2200169 a 4500
001 1127874
005 2018-10-26
008 2018 bl uuuu u00u1 u #d
100 1 $aCASTILHOS, R. V.
245 $aCircadian feeding behavior of Dichelops melacanthus (Hemiptera$bPentatomidae) on maize crops.$h[electronic resource]
260 $c2018
520 $aThe green-belly stink bug Dichelops melacanthus (Hemiptera: Pentatomidae) has worried growers due it?s high incidence and intensive damage on maize initial phase. The monitoring and control of this pest with spray of insecticides are unsuccessful owing to lack of knowledge about some behavioral aspects of this pest such as its location and preferred feeding time along the day. Therefore, this work aimed to evaluate circadian rhythm of feeding of D. melacanthus on maize. For that, plants from a maize field of the genotype P30F53 VYHR were artificially infested with D. melacanthus adults. Previously to infestation, plants were covered with a cage (1m length x 0,5m width x 0,5m height) coated with a Tulle fabric. Each cage encompassed 5 plants, and 10 adults (5 couples) were released into each cage. It were used 10 cages (experimental units), randomly distributed in maize field. After 24 h hours of infestation, the behavior of the insects was evaluated by visual observations every 3 hours (6:00, 9:00, 12:00, 15:00, 18:00, 21:00 and 24:00 h), and the number of insects present in the plants (stalk and leaves) was recorded. For nocturnal evaluations, a red led flashlight was used in order to visualize the insects without driving them off. The aforementioned procedures were carried twice, at 15 and 21 days after emergence, corresponding to V3 and V5 stages, respectively. Climatic factors were monitored and correlated to insects? feeding in plants. The number of D. melacanthus on plants was low at morning period, and increased in the afternoon with peak at 15:00 h on both stages evaluated. This may indicate that a heat uptake and raise in body temperature are necessary for beginning of foraging activity (basking behavior). Most of the insects visualized in maize plants were at the stalk region (>96%), evidencing feeding behavior. The feeding activity was positively correlated with air temperature, and negatively correlated with atmospheric pressure.
653 $abasking behavior
653 $agreen-belly stink bug
653 $aseedling pest
700 1 $aRIBEIRO, L. P.
773 $tIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 27., CONGRESSO LATINO-AMERICANO DE ENTOMOLOGIA, 10., 2018, Gramado, RS. Resumos... Londrina, PR: Sociedade Entomológica do Brasil, 2018.
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