The development of Aspavia armigera Fabricius (Hemiptera: Pentatomidae) and its status as a pest of cowpea and rice

Ewete, F. K.; Olagbaju, R. A.

doi:10.1017/s1742758400010547

Cited by 9 publications

(12 citation statements)

References 7 publications

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“…Thus, losses resulting from such attacks in different genotypes and rice cultivars are probably variable. Moreover, in our study we report the damage by stink bugs of the Oebalus genus; however, several other species of stink bugs are considered pests of panicles in rice production areas worldwide, with prominence for the genera Aspavia, Cletus, Eysarcoris, Leptocorisa, Mictis, Mormidea and Nysius, among others (Ewete;Olagbaju, 1990;Pantoja et al, 1995;Barrigossi;Vieira, 2001;Yasuda;Watanabe, 2007;Tetsuya;Watanabe, 2008).…”

Section: Resultsmentioning

confidence: 71%

Quantitative and qualitative damage caused by Oebalus poecilus (Hemiptera, Pentatomidae) to upland rice cultivated in new agricultural frontier of the Amazon rainforest (Brazil)

Krinski

Foerster

2017

Ciênc. agrotec.

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Index terms: Oryza sativa; stink bug of panicles; damage level; integrated pest management. RESUMOOebalus poecilus (Dallas 1851) é uma das espécies de percevejos de grande importância econômica para os produtores de arroz no Brasil em sistemas de cultivo irrigados, de inundação ou de terras altas. Estes pentatomídeos são conhecidos como percevejos das panículas, porque ninfas e adultos alimentam-se principalmente dessas estruturas. O ataque deste percevejo resulta em grãos manchados, massa inferior, redução germinativa e grãos deformados. Considerando isso, o objetivo deste estudo foi avaliar as perdas quantitativas e qualitativas na cultivar comercial de arroz de terras altas (variedade Cambará), submetidas a diferentes níveis de infestação de percevejos de panículas, O. poecilus, em diferentes estágios de crescimento reprodutivo das plantas de arroz. Os resultados mostram que em arroz de terras altas (variedade Cambará), os grãos de arroz são suscetíveis a danos quantitativos (número e peso) e qualitativos (grãos manchados, atrofiados, gessados e quebrados), durante todo o desenvolvimento da panícula. No entanto, quando os insetos se alimentam durante os estágios de antese/cariopse e leitosa causam percentual significativamente maior de grãos vazios (até 83%) do que quando se alimentam de grãos durante as fases posteriores do desenvolvimento da panícula. Esta característica foi também observada para a redução de peso dos grãos. Esta informação pode beneficiar os produtores e outros pesquisadores, permitindo que concentrem os esforços de monitoramento de O. poecilus em fases mais suscetíveis ao ataque deste inseto. Também serve de base para a tomada de decisão sobre quando e quais medidas de controle devem ser realizadas, a fim de controlar os percevejos das panículas.Termos para indexação: Oryza sativa; percevejo das panículas; nível de dano; manejo integrado de pragas.

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Section: Resultsmentioning

confidence: 71%

Quantitative and qualitative damage caused by Oebalus poecilus (Hemiptera, Pentatomidae) to upland rice cultivated in new agricultural frontier of the Amazon rainforest (Brazil)

Krinski

Foerster

2017

Ciênc. agrotec.

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“…Incidentally, all the rice varieties considered as resistant had fewer number of A. armigera on them and lower grain damage compared to others making them to exhibit either antixenosis or antibiosis type of resistance. Although previous works on rice resistance to A. armigera is scanty, Ewete and Olagbaju (1990) showed that ITA 257 was more susceptible to A. armigera than ITA 128 due to significantly higher damage and shorter developmental period recorded on the former.…”

Section: Discussionmentioning

confidence: 85%

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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“…In studies by Ewete and Olagbaju (1990), 4 bugs panicle -1 caused significant grain damage on cultivar ITA 257 while 8 bugs panicle -1 were required to cause significant grain damage on ITA 128. Mean percentage grain damage at 4 bugs panicle -1 was 14 and 39% for ITA 128 and ITA 257, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…These pots were watered as required. Five bugs/panicle (2 Male: 3 Female) (Ewete & Olagbaju, 1990) was introduced at three different stages of rice reproductive phase -7, 14 and 21 days after flowering (DAF) into the nylon sleeves (30 cm × 15 cm) which accommodated the panicles up to the flag leaf. A treatment was a rice reproductive phase allotted to the panicles using completely randomized design with five replicates, while the control was insect-free.…”

Section: Experiments I: Determination Of the Most Critical Rice Phenolmentioning

confidence: 99%

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Evaluation of Damage Induced by Aspavia armigera Fabricius on Different Rice (Oryza sativa Linn.) Varieties

Joda¹,

Ewete²,

Pitan³

2014

JAS

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Yield-related responses of rice plants to artificial infestation of 5 adult Aspavia armigera per peduncle at 0, 7, 14, 21 days after flowering were examined to determine the critical stage of rice for Aspavia armigera infestation. Damage was also assessed at 7 days after flowering, which was the critical stage of rice, under different bug densities -0, 2, 4, and 8 bugs per peduncle. The highest grain weight loss of 70.0%, which was significantly different from those recorded at 14 days after planting (DAF) and 21 DAF (40% and 39.7%, respectively), occurred at 7 DAF which was the milk stage. Similarly, significantly lower paddy and head weights which were about 48% of that of the control were obtained at 7 DAF, while higher percentage of floating grains caused by A. armigera infestation was obtained at 7 and 14 DAF compared to other times. With increasing insect density there was a corresponding significant increase (P < 0.05) in floating grains and grain weight loss, and reduction in head weight, paddy weight and grain weight. At 2 bugs per peduncle caused a significant reduction in rice yield parameters in both upland and lowland varieties and is therefore the damage threshold for the varieties tested.

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The development of Aspavia armigera Fabricius (Hemiptera: Pentatomidae) and its status as a pest of cowpea and rice

Cited by 9 publications

References 7 publications

Quantitative and qualitative damage caused by Oebalus poecilus (Hemiptera, Pentatomidae) to upland rice cultivated in new agricultural frontier of the Amazon rainforest (Brazil)

Quantitative and qualitative damage caused by Oebalus poecilus (Hemiptera, Pentatomidae) to upland rice cultivated in new agricultural frontier of the Amazon rainforest (Brazil)

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

Evaluation of Damage Induced by Aspavia armigera Fabricius on Different Rice (Oryza sativa Linn.) Varieties

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