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| OLIVEIRA,JOSÉ E.M.; TORRES,JORGE B.; CARRANO-MOREIRA,ALBERTO F.; ZANUNCIO,JOSÉ C.. |
| Avaliou-se a taxa de predação de fêmeas virgens ou acasaladas de Podisus nigrispinus (Dallas) em diferentes densidades de lagartas de Alabama argillacea (Huebner) em condições de laboratório e de campo. Em laboratório, empregaram-se potes plásticos de 500 ml contendo fêmeas do predador, uma folha de algodão e lagartas de A. argillacea (50 ± 10 mg) nas densidades de uma, duas, quatro, oito e 16 lagartas. No campo, algodoeiros na fase de florescimento foram engaiolados, sendo empregadas as mesmas densidades de lagartas que no laboratório. Em ambas as condições, as fêmeas de P. nigrispinus apresentaram ganho de peso e aumento de sua taxa de predação com o aumento da densidade de lagartas de A. argillacea, mas com valores maiores para fêmeas em laboratório.... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Controle biológico; Percevejo predador; Curuquerê-do-algodoeiro; Resposta funcional; Alabama argillacea. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000400020 |
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| REIS,TATIANE C.; SOARES,MARCUS A.; SANTOS,JOSÉ B. DOS; SANTOS,CONCEIÇÃO A. DOS; SERRÃO,JOSE EDUARDO; ZANUNCIO,JOSÉ C.; FERREIRA,EVANDER A.. |
| Abstract Herbicides can impact non-target metabolic pathways in natural enemies and lead to the reduction of these populations in the field. Behavioral characteristics, morphology and histology of reproductive structures and reproduction of females of Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) were evaluated under the effect of the herbicides atrazine, nicosulfuron and the mixture of both. The number of mature oocytes per ovary was lower in females exposed to the herbicides atrazine, nicosulfuron and the mixture of both. Herbicides did not affect the longevity and mortality of P. nigrispinus, therefore, they are selective for this predator. On the other hand, herbicides can cause sublethal effects by affecting the reproduction of predators. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Behavior; Histology; Morphology; Reproduction; Herbicides. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703625 |
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| RAMALHO,FRANCISCO S.; PACHÚ,JÉSSICA K.S.; LIRA,ALINE C.S.; MALAQUIAS,JOSÉ B.; BRITO,BÁRBARA D.S.; ZANUNCIO,JOSÉ C.; FERNANDES,FRANCISCO S.. |
| ABSTRACT The host acceptance behavior and environmental factors as temperature affect the feeding behavior of Lepidoptera pests. Thus, they must be considered in studies about the risk potential of resistance evolution. The current study sets the differences in the feeding behavior of neonate Alabama argillacea (Hübner) (Lepidoptera: Noctuidae) larvae exposed to Bt and non-Bt cotton plants, under different temperatures and time gap after hatching. Two cotton cultivars were used: the Bt (DP 404 BG - bollgard) and the non-transformed isoline, DP 4049. We found that the feeding behavior of neonate A. argillacea is significantly different between Bt and non-Bt cotton. Based on the number of larvae with vegetal tissue in their gut found on the plant and in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cotton leafworm; Feeding behavior; Transgenic cotton; Blended seed refuge. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602955 |
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| FORNAZIER,MAURÍCIO J.; MARTINS,DAVID S.; WILLINK,MARIA CRISTINA G. DE; PIROVANI,VICTOR D.; FERREIRA,PAULO S.F.; ZANUNCIO,JOSÉ C.. |
| ABSTRACT Coffee is one of the most important Brazilian agricultural commodities exported, and Minas Gerais and Espírito Santo States are the main coffee producers. Scale insects are important coffee pests, and 73 species of Cerococcidae (3), Coccidae (18), Diaspididae (6), Eriococcidae (1), Ortheziidae (3), Pseudococcidae (21), Putoidae (2) and Rhizoecidae (19) have been associated with roots, branches, leaves, flowers and fruits of Arabica coffee in the Neotropics. Eight species were found associated with Arabica coffee in Minas Gerais and Espírito Santo States in this study, and Coccidae was the most frequent family. Coccus alpinus, Cc. celatus, Cc. lizeri, Cc. viridis, and Saissetia coffeae (Coccidae) were found in both states; Alecanochiton marquesi,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coccidae; Coffea arabica; Diaspididae; Geographical distribution; Pseudococcidae. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603083 |
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| SILVA,PAULO LUIZ DA; CORDEIRO,GLÁUCIA; SILVA,CAROLINA R. DA; BARROS,RAFAEL A.; SILVA,CAMILA R. DA; ZANUNCIO,JOSÉ C.; CAMPOS,WELLINGTON G.; OLIVEIRA,MARIA G.A.. |
| Abstract The response of plants to grazing includes the production of chemical defense compounds such as proteases inhibitors and secondary metabolites as flavonoids, which makes them less palatable to feeding and negatively affecting the physiology of insects. The aim of this study was to evaluate the phytochemical response of soybean cultivars (Glycine max (L.) Merrill) resistant (IAC-17, IAC-24) and susceptible (IAC-P1) to insects after mechanical damage. These cultivars were mechanically injured, and after 24 hours samples of these plants were analyzed by HPLC to identify and quantify flavonoids. The flavonoids daidzein, quercetin, and rutin were quantified, with the highest concentration of daidzin in soybean cultivars after mechanical damage. Rutin... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Flavonoid; Herbivory; Mechanical damage; Secondary metabolite. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703415 |
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| DELAZARI,FÁBIO T.; ASSIS,IGOR R.; CABRERA,DIEGO F.V.; FERREIRA,MARIANE G.; DIAS,LUIZ E.; RUEDA,ANGELICA; ZANUNCIO,JOSÉ C.; SILVA,DERLY J.H.. |
| Abstract The sweet potato is an alternative energy source, but its sustainability depends on efficient water use. The objective of this study was to evaluate sweet potato morpho-physiological characteristics, and water use efficiency (WUE). Irrigation depths of 50, 75, 100, and 125% of crop evapotranspiration (ETc) were applied. The morpho-physiological indicators, WUE, leaf area index (LAI), leaf water potential, leaf temperature, and leaf chlorophyll index (ICF), were evaluated. The WUE of the sweet potato cultivars increased until the 75% water depth of the ETc. The LAI of these cultivars increased with irrigation depth, with higher values at 100% of the ETc. The leaf water potential of the two sweet potato cultivars was lowest with the lower irrigation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ipomoea batatas; Irrigation management; Leaf temperature; Water stress; Water use efficiency. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703541 |
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