The Stylet Sheath as an Indicator of Feeding Activity of the Rice Stink Bug2

Bowling, C. C.

doi:10.1093/jee/72.2.259

Cited by 55 publications

(22 citation statements)

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“…A atividade dos insetos foi avaliada por meio das seguintes determinações: número de bainhas de estilete, ou sinais de alimentação, por espigueta (Bowling, 1979); porcentagem de espiguetas com bainhas; porcentagem de perda de germinação, calculada com base na subtração do poder germinativo dos tratamentos infestados do valor obtido na testemunha sem infestação. A presença de bainhas de estilete nas espiguetas foi detectada utilizando o méto-do da fucsina ácida, e o poder germinativo das sementes foi determinado pelo teste de germinação.…”

Section: Methodsunclassified

“…Relações entre populações de plantas de arroz e perdas quantitativas, qualitativas, ou ambas, decorrentes de níveis de infestação de Oebalus spp., visando adequar medidas de controle ou para avaliação de resistência de plantas hospedeiras, têm sido estudadas em experimentos de campo, utilizando gaiolas teladas de vários tamanhos (Swanson & Newsom, 1962;Kennard, 1966;Latson et al, 1976;Bowling, 1979;Robinson et al, 1981;Heinrichs et al, 1985;Link et al, 1987;Martins et al, 1989). Depen-dendo das características de consumo e de mercado de arroz, quatro exemplares de O. poecilus/m 2 de cultura são suficientes para definir a necessidade de controle (Weber, 1989).…”

Section: Introductionunclassified

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Avaliação dos danos de Oebalus spp. em genótipos de arroz irrigado

Ferreira

Vieira

Rangel

2002

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a reação de genótipos de arroz irrigado ao dano causado por percevejos adultos (Oebalus spp., Hemiptera: Pentatomidae), confinados nas panículas, durante os períodos de desenvolvimento e maturação das espiguetas. Dez genótipos foram comparados pelas perdas quantitativas, qualitativas e totais provocadas por O. poecilus, no primeiro e segundo experimentos de campo, respectivamente. Paralelamente, cinco genótipos do primeiro experimento foram comparados quanto às perdas quantitativas causadas por O. ypsilongriseus. Ocorreu reação significativamente diferente entre os genótipos com relação às duas espécies de percevejo. O. poecilus causou uma perda geral média, nos dois experimentos, de 52,7%. A porcentagem média de perda total foi maior em Metica 1 e CNA 7545, e menor, na linhagem CNA 8033.Termos para indexação: Oryza sativa, espigueta, perda, inseto. Evaluation of damages caused by Oebalus spp. in irrigated rice genotypesAbstract -The objective of this study was to evaluate the reaction of irrigated rice genotypes to the damage caused by adult paddy bugs (Oebalus spp., Hemiptera: Pentatomidae) during spikelet development and maturation. Quantitative and qualitative losses, as well as total loss, caused by O. poecilus were compared among ten genotypes in the first and second field experiments, respectively. At the same time, five genotypes, in the first experiment, were also compared to damage caused by O. ypsilongriseus. Significant differences were observed among the evaluated genotypes in relation to reaction to insect species. For both experiments, the overall average loss caused by O. poecilus was 52.7%. The average total loss was greater for Metica 1 and CNA 7545 and smaller for CNA 8033.

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Section: Methodsunclassified

Section: Introductionunclassified

Avaliação dos danos de Oebalus spp. em genótipos de arroz irrigado

Ferreira

Vieira

Rangel

2002

Pesq. agropec. bras.

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“…Proportion of soybean pods with stylet sheaths collected from the five study sites in 2006 (A). Stylet sheaths on the pods (B, C) were identified by staining with acid fuchsin according to the method of Bowling (1979). See text and Table 2 for the statistics.…”

Section: Resultsmentioning

confidence: 99%

“…When pods reached nearly full size (R4 stage), five pods from each planting unit were collected randomly from both host egg-inoculated and control sites until harvest. The pods were brought to the laboratory and then stained with acid fuchsin according to the method of Bowling (1979). After washing, stylet sheaths formed on the pods with a distinct red color ( Fig.…”

Section: Methodsmentioning

confidence: 99%

Inoculation of refrigerated non-viable eggs of Riptortus clavatus (Heteroptera: Alydidae) to enhance parasitism by egg parasitoids in soybean field

Lim

Mahmoud

2009

Appl. Entomol. Zool.

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Riptortus clavatus Thunberg (Heteroptera: Alydidae) is an important soybean pest in Korea and Japan. Chemical application is a common control method against R. clavatus although it is not always effective at reducing crop damage. As a biological control, the release of refrigerated stink bug eggs has been suggested because the eggs become non-viable but can still be parasitized by parasitoids. We evaluated the inoculation of refrigerated eggs of R. clavatus as a method to enhance natural parasitism. Overall, 9,000-10,600 refrigerated eggs of R. clavatus were inoculated in soybean fields. A higher seasonal parasitism rate on both natural and released host eggs was found at the treated sites. Gregarious parasitoids, including Ooencyrtus nezarae Ishii (Hymenoptera: Encyrtidae) and solitary Gryon japonicum Ashmead (Hymenoptera: Scelionidae), emerged from natural eggs. On the released eggs, the parasitism rate by gregarious parasitoids was greatly reduced for an unknown reason. The proportion of bean pods with stylet sheaths as an index of crop damage was also significantly reduced; however, neither the seasonal number of unparasitized eggs nor nymphs and adults of R. clavatus was affected by host egg inoculation. This is the first trial to inoculate non-viable host eggs to enhance natural parasitism.

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“…armigera mass rearing method was adapted from Nilakhem (1976), Bowling (1979aBowling ( , 1979b and Heinrichs et al (1985). Thirteen cages which were constructed using water-resistant wood and aluminum wire mesh were placed in a trench of about 15 cm deep outside the Plant Biology Laboratory, Olabisi Onabanjo University, Ago-Iwoye, Nigeria.…”

Section: Mass Rearing Of a Armigeramentioning

confidence: 99%

Varietal Differences in Rice (Oryza sativa L.) Resistance to the Shield Bug, Aspavia armigera (Fabricius) (Hemiptera: Pentatomidae)

Joda¹,

Ewete²,

Singh³

et al. 2015

JAS

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Sixty rice accessions were assessed in the field for resistance to Aspavia armigera F. attack under natural and artificial infestations. Out of these, 30 were lowland and 19 upland varieties derived from the International Institute for Tropical Agriculture (IITA) breeding programmes, while the others were obtained from other local and international organizations. From the upland varieties, the highest population density of A. armigera was recorded on CAN 4143 (p < 0.05), while the highest percentages of unfilled grains were obtained on ITA 132 (33.1%) and CAN 4143 (32%), and were both rated the most susceptible to A. armigera. CAN 6656, on which the lowest value for unfilled grains (4.7%) was found was rated resistant. Among the lowland varieties, TOX 3118-2-E2-2-1-2, on which was recorded the highest population density of A. armigera and highest percentage of unfilled grains (p < 0.05) was considered susceptible, while ITA 230, ITA 308, ITA 123, TOX 3100-32-2-1-3-5, TOX 3107-39-1-2-1-3, TOX 3027-43-1-E3-1-1, TOX 3441-7-1-1-1, TOX 3226-5-2-2-2, TOX 3716-15-1-1 and TOX 3561-56-2-3-2 were considered resistant. However, no-choice tests revealed that five from each of ten upland and lowland varieties initially rated as resistant were severely damaged. The other five upland ITA 315, IRAT 169, ITA 321, FAROX 41 and M 55 with consistent expression of resistance which also had low number of stylet sheath: 11, 17, 23, 24.3, and 29.3, respectively, were therefore rated resistant. Similarly, lowland ITA 230, TOX 3561-56-2-3-2, TOX 3100-2-1-3-5, TOX 3226-5-2-2-2 and TOX 3107-39-1-2-1-3 with low number of stylet sheath were rated resistant as well.

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The Stylet Sheath as an Indicator of Feeding Activity of the Rice Stink Bug2

Cited by 55 publications

References 0 publications

Avaliação dos danos de Oebalus spp. em genótipos de arroz irrigado

Avaliação dos danos de Oebalus spp. em genótipos de arroz irrigado

Inoculation of refrigerated non-viable eggs of Riptortus clavatus (Heteroptera: Alydidae) to enhance parasitism by egg parasitoids in soybean field

Varietal Differences in Rice (Oryza sativa L.) Resistance to the Shield Bug, Aspavia armigera (Fabricius) (Hemiptera: Pentatomidae)

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