Effect of Rice Bug Leptocorisa oratorius (Hemiptera: Alydidae) on Rice Yield, Grain Quality, and Seed Viability

Jahn, Gary C.; Domingo, I. T.; Liberty, M.; Almazan, P.; Pacia, Jocelyn

doi:10.1093/jee/97.6.1923

Cited by 26 publications

(20 citation statements)

References 2 publications

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“…Similar to the rice leaf bug, many species of stink bugs cause pecky rice (e.g., Harper et al, 1993;Jahn et al, 2004;Takeuchi et al, 2004) and invade paddy fields after the heading of rice (Nakasuji, 1973;Rashid et al, 2006). Flowering rice panicle odor also may be attractive to other species of rice-ear bugs and may cause their invasions into paddy fields.…”

Section: Discussionmentioning

confidence: 99%

Attractants for Rice Leaf Bug, Trigonotylus caelestialium (Kirkaldy), are Emitted from Flowering Rice Panicles

2010

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Volatiles were extracted from rice plants of various growth stages with solid-phase microextraction (SPME) and analyzed by gas chromatography-mass spectrometry (GC-MS) to identify attractants that cause invasion of the rice leaf bug Trigonotylus caelestialium (Kirkaldy) into paddy fields. The composition of volatile blends produced by rice plants changed with rice development. In addition, volatile blend compositions differed between the panicles and the stems and leaves. The relative geranyl acetone content was high in all plant structures analyzed. In volatiles from whole plants in the fourth-leaf stage and panicles in the full-ripe stage, the relative content of green leaf volatiles (GLVs) was higher than that found in other rice plant structures. In contrast, relative terpene levels emitted from whole plants in the panicle-formation stage and by panicles and stems and leaves in the flowering stage were higher than those of other rice plant structures. However, the type of terpenes found differed between the panicles and the stems and leaves. Relative levels of β-caryophyllene in whole plants in the panicle-formation stage and panicles in the flowering stage were much higher than that in stems and leaves in the flowering stage. Our previous studies demonstrated that the odor from whole plants in the panicle-formation stage and panicles in the flowering stage is attractive to rice leaf bugs. Here, the attractiveness of β-caryophyllene to adult bugs was investigated in olfactometer assays. Adult females were attracted to β-caryophyllene at a concentration of 0.001%, which is approximately equivalent to the concentration produced by flowering rice panicles. However, β-caryophyllene also was present in the odor of whole plants in the fourth-leaf stage and in stems and leaves in the flowering stage. Furthermore, the amounts of this compound emitted from these structures were similar. Therefore, we suggest that the relative abundance of this compound in a volatile blend is important for attractance of the bugs.

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Section: Discussionmentioning

confidence: 99%

Attractants for Rice Leaf Bug, Trigonotylus caelestialium (Kirkaldy), are Emitted from Flowering Rice Panicles

2010

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“…One less problematic control is using naturally occurring parasitoids to attack the rice bug eggs. The parasitoids that have been found in eggs of rice bugs include Agrion sp or Hadronotus leptocorisae [7], [8] and Ooencyrtus sp [9], [10], but nature of the rice bug egg parasitoids in the area of West Pasaman Regency, West Sumatra is still unknown. Discovering the species of rice bug egg parasitoids that occur in an area is the first step to determining whether they could be used for biological control there.…”

Section: Introductionmentioning

confidence: 99%

Parasitizations Levels and Temperature Tolerance of Rice Bug (Leptocorisa oratorius Fabricius) Egg Parasitoids: Mass Rearing for Biological Control

Maulina¹,

Nelly²,

Hidrayani³

et al. 2018

International Journal on Advanced Science, Engineering and Information Technology

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Abstract-The rice bug is a significant pest that attacks wet rice fields Rice bug egg parasitoids can be used as a biological control for this pest in the field. Successful parasitoid mass rearing in the laboratory depends on optimum temperatures to ensure the fitness of the adults that are introduced into the field. The objectives of this research were to determine the parasitization levels of rice bug egg parasitoids from two areas in West Pasaman Regency; one in the lowlands (Kinali 56 m asl) and the one at a higher altitude in the foothills (Talamau 47 m asl). Then the best temperature for parasitoid rearing was determined for the dominant parasitoid. A purposive sampling method was used for collecting the rice bug egg samples which were collected along 1 km transect lines in the rice fields. A descriptive method was used to report the parasitization levels. Rearing temperature treatments for the dominant rice bug egg parasitoids in the laboratory were 20 o C, 25 o C, 30 o C and one batch raised as a control with no temperature regulation. 20 replications were conducted for each treatment. The data were analyzed using Completely Randomized Design (Statistics 8). The main species of rice bug egg parasitoids found were Hadronotus leptocorisae and Ooencyrtus malayensis with parasitization levels in the lowlands of 6.4% and 2.2% and the foothills of 28.4 % and 3.1% respectively. The best temperature for mass rearing parasitoid in the laboratory was 25 o C, and they had the longevity of 22.6 ± 5.4 days.

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“…Rice-ear bugs include many species of bugs (Iwata and Yoshihara 1976;Harper et al 1993;Van den Berg and Soehardi 2000;Jahn et al 2004;Takeuchi et al 2004). Rice-ear bugs often invade paddy fields after the flowering of rice (Nakasuji 1973;Rashid et al 2006).…”

Section: Discussionmentioning

confidence: 99%

Host plant volatiles responsible for the invasion of Stenotus rubrovittatus (Heteroptera: Miridae) into paddy fields

Hori

Namatame

2012

J Applied Entomology

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We investigated the attractiveness of synthetic volatile blends or individual volatiles of flowering rice panicles or flowering Scirpus juncoides spikelets to the sorghum plant bug Stenotus rubrovittatus (Matsumura). None of the individual chemicals tested attracted either sex of the bug. Synthetic volatile blends of flowering rice panicles composed of geranyl acetone, β‐caryophyllene, n‐decanal, methyl salicylate, β‐elemene and n‐tridecene attracted females. The synthetic blend of volatiles was just as attractive as natural flowering rice panicles to females. Other synthetic blends did not attract the bug. We sampled headspace volatiles from flowering S. juncoides spikelets with solid‐phase microextraction and analysed them using gas chromatography–mass spectrometry. The main volatile emitted from S. juncoides was β‐caryophyllene, one of the major volatile components of flowering rice panicles. β‐Elemene was a common volatile found in flowering rice panicles and flowering S. juncoides spikelets. Therefore, we investigated the attractiveness of synthetic blends of flowering rice panicles and S. juncoides spikelets composed of β‐caryophyllene and β‐elemene. The synthetic blend of flowering S. juncoides spikelets significantly attracted males but not females. The synthetic blend of flowering rice panicles composed of β‐caryophyllene and β‐elemene did not attract either sex. These results suggest that β‐caryophyllene and β‐elemene are common active compounds responsible for attractiveness of flowering rice panicles and S. juncoides spikelets although some of the other volatile components act synergistically with these two compounds in natural plant odours.

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Effect of Rice Bug Leptocorisa oratorius (Hemiptera: Alydidae) on Rice Yield, Grain Quality, and Seed Viability

Cited by 26 publications

References 2 publications

Attractants for Rice Leaf Bug, Trigonotylus caelestialium (Kirkaldy), are Emitted from Flowering Rice Panicles

Attractants for Rice Leaf Bug, Trigonotylus caelestialium (Kirkaldy), are Emitted from Flowering Rice Panicles

Parasitizations Levels and Temperature Tolerance of Rice Bug (Leptocorisa oratorius Fabricius) Egg Parasitoids: Mass Rearing for Biological Control

Host plant volatiles responsible for the invasion of Stenotus rubrovittatus (Heteroptera: Miridae) into paddy fields

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