Feeding Preference of Coptotermes formosanus (Isoptera: Rhinotermitidae) for Gamma-Irradiated Wood Impregnated with Benzoylphenylurea Compounds Under Laboratory Conditions

2008 ◽  
Vol 101 (3) ◽  
pp. 880-884 ◽  
Author(s):  
Noriaki Katsumata ◽  
Kunio Tsunoda ◽  
Aya Toyoumi ◽  
Tsuyoshi Yoshimura ◽  
Yuji Imamura
Keyword(s):  
Feeding Preference ◽  
Coptotermes Formosanus ◽  
Laboratory Conditions ◽  
Gamma Irradiated

Components of Steamed and Non-Steamed Japanese Larch (Larix leptolepis (Sieb. et Zucc.) Gord.) Heartwood Affecting the Feeding Behavior of the Subterranean Termite, Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae)

Holzforschung ◽  
1999 ◽  
Vol 53 (6) ◽  
pp. 569-574 ◽  
Author(s):  
Wakako Ohmura ◽  
Shuichi Doi ◽  
Masakazu Aoyama ◽  
Seiji Ohara
Keyword(s):  
Soluble Fraction ◽  
Feeding Preference ◽  
Coptotermes Formosanus ◽  
Water Soluble ◽  
Subterranean Termite ◽  
Residual Water ◽  
Larix Leptolepis ◽  
Feeding Deterrence ◽  
Water Soluble Fraction ◽  
Larch Wood

Summary The attraction of steamed Japanese larch (Larix leptolepis (Sieb. et Zucc.) Gord.) heartwood to the subterranean termite, Coptotermes formosanus Shiraki was investigated. Hot-water extracts of the steamed and the non-steamed larch woods were sequentially extracted with n-hexane, diethyl ether, and ethyl acetate. Furthermore, the residual water-soluble fraction of the steamed wood was fractionated by column chromatography using an Amberlite XAD-2 resin. Feeding-preference and feeding-deterrence of the termite were assessed in the two-choice feeding tests using paper discs permeated with each fraction. The diethyl ether extracts of the non-steamed larch wood showed the feeding-deterrence activity. Taxifolin, the main component of these extracts, was found to be the major feeding-deterrence constituent. In the case of the steamed larch wood, taxifolin was not detected in any fractions, and the residual water-soluble fraction showed the feeding-preference activity. Furthermore, it was found that the feeding-preference constituents were contained in the coloring substances adsorbed by the Amberlite XAD-2 resin. From these results, the degradation of taxifolin and the formation of coloring substances during the steam treatment were to be considered as important factors of the attraction of steamed larch wood to the termite.

Efficacy of 1% fipronil dust of activated carbon against subterranean termite Coptotermes formosanus Shiraki in laboratory conditions

Sociobiology ◽  
2016 ◽  
Vol 63 (4) ◽  
pp. 1046 ◽  
Author(s):  
Qingfeng Li ◽  
Qinfen Zhu ◽  
Shijie Fu ◽  
Damin Zhang ◽  
Jianbo Huang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Horizontal Transfer ◽  
Horizontal Transmission ◽  
Coptotermes Formosanus ◽  
Subterranean Termite ◽  
Laboratory Conditions ◽  
Coptotermes Formosanus Shiraki ◽  
Delayed Toxicity ◽  
Effective Transfer ◽  
Dose Dependent

Toxicity and horizontal transmission of 1% fipronil dust of activated carbon were measured using the subterranean termite Coptotermes formosanus Shiraki in laboratory conditions. 1% fipronil dust of activated carbon has delayed toxicity towards C. formosanus compared with 0.5% fipronil dust of French chalk; knockdown times KT50 and KT90 were delayed by >9 and >15 h respectively. Furthermore, 1% fipronil dust of activated carbon showed excellent primary and secondary horizontal transfer levels. In primary horizontal transfer, recipient mortalities reached 100% by 24, 48 and 72 h at donor-recipient ratios of 1:1, 1:5 and 1:10, respectively. High transfer efficacies were also found if donor-recipient ratios were greatly increased: mortality reached 100% at 9 d at ratio 1:25 and >90% at 12 d at 1:50. In secondary horizontal transfer, the toxicant transmitting ability of C. formosanus was greater when the primary horizontal transfer ratio was lower, and the highest transfer efficacy was found with a donor-recipient ratio of 1:1 - recipient mortalities reached 100% at 5 d and 11 d, respectively. Application of 1% fipronil dust of activated carbon overcomes the problem that that too high a concentration kills termites before they can contaminate their nestmates, while a lower concentration may not supply a sufficient dose for effective transfer from treated to untreated termites; this preparation has delayed toxicity, dose-dependent toxicity in horizontal transfer and high efficacy to control C. formosanus.

scholarly journals Super Absorbent Polymers Buried within Dry Soil Attract Formosan Subterranean Termites (Blattodea: Rhinotermitidae)

Forests ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 591 ◽  
Author(s):  
Qinxi Xie ◽  
Zhengya Jin ◽  
Wei Lin ◽  
Kena Xue ◽  
Xuemei Chen ◽  
...  
Keyword(s):  
Feeding Preference ◽  
Coptotermes Formosanus ◽  
Void Volume ◽  
Subterranean Termites ◽  
Feeding Behaviors ◽  
Super Absorbent Polymer ◽  
Dry Soil ◽  
Moisture Conditions ◽  
Bait Stations ◽  
Absorbent Polymer

Baiting is one of the main methods to control subterranean termites. Many previous studies showed that subterranean termites avoid making tunnels within dry soil and feeding on dry wood, which may decrease bait infestation and consumption in drought areas. Super absorbent polymers are a group of materials that can retain large amounts of water and improve the moisture content of soil and bait matrices, and therefore may attract termites. In the present study, choice tests were conducted in the laboratory to investigate the aggregation and feeding behaviors of Formosan subterranean termites, Coptotermes formosanus Shiraki, in response to the three super absorbent polymers—sodium polyacrylate (Na-PAM), potassium polyacrylate (K-PAM), and poly(acrylamide-co-acrylic acid) potassium salt (P(AM/AA))—that were either placed within soil or filled in the void volume of baiting containers. Under dry-soil (30%-moisture) conditions, termites consumed significantly more wood in the chambers where super absorbent polymers were buried than in the control chambers (super absorbent polymer was not placed within soil). In addition, Na-PAM placed within dry soil significantly increased termite aggregation compared with the control chambers. However, no aggregation or feeding preference was detected when super absorbent polymers were placed within wet soil (60%-moisture). Also, filling super absorbent polymers into the void volume of baiting containers did not attract termites, whether the soil was dry or wet. Our study showed that placing super absorbent polymers within soil around bait stations may increase bait consumption by subterranean termites in drought locations.

scholarly journals Using phosphate to increase feeding consumption in termite Coptotermes formosanus

2020 ◽  
Vol 66 (1) ◽  
Author(s):  
Hiroto Suhara
Keyword(s):  
Feeding Preference ◽  
Coptotermes Formosanus ◽  
Choice Test ◽  
Treated Sample ◽  
Feeding Choice ◽  
Dipotassium Phosphate ◽  
Domestic Environments ◽  
The Mean ◽  
Multiple Feeding ◽  
Choice Feeding

AbstractTermites are ecologically significant in positive and negative ways; their role in breaking down debris greatly benefits forest environments, but this activity renders them a pest in domestic environments. This study examines the effect of nutrition on the feeding preference of termite Coptotermes formosanus Shiraki. Among 11 nutrition options tested, dipotassium phosphate (DKP) most significantly increased feeding consumption in the multiple feeding choice test. The mean feeding amount of the DKP-treated sample was 2.5-fold higher than that of the deionized water-treated control. This result suggests that termite colonies are deficient in phosphorus, and an additional supply of phosphate can promote feeding. The result of a no-choice feeding test using DKP shows that DKP does not promote feeding in a small number of termites. The results obtained in this study suggest that phosphorus is needed in termite colonies, making DKP especially effective. DKP will help to improve bait technology, because it is inexpensive and safe for both humans and the environment.

Human drug taking under controlled laboratory conditions.

1988 ◽  
Author(s):  
Marian W. Fischman ◽  
Richard W. Foltin ◽  
Joseph V. Brady
Keyword(s):  
Laboratory Conditions

Multiple recycling of paperboard: Paperboard characteristics and maximum number of recycling cycles— Part I: Multiple recycling of corrugated base paper

TAPPI Journal ◽  
2019 ◽  
Vol 18 (11) ◽  
pp. 631-638
Author(s):  
FREDERIC KREPLIN ◽  
HANS-JOACHIM PUTZ ◽  
SAMUEL SCHABEL
Keyword(s):  
Compression Test ◽  
Production Capacity ◽  
Strength Properties ◽  
Paper Properties ◽  
Corrugated Board ◽  
Laboratory Conditions ◽  
Base Paper ◽  
Study Results ◽  
Short Span ◽  
Multiple Recycling

Paper for recycling is an important fiber source for the production of corrugated base paper. The change in production capacity toward more and more packaging papers affects the composition of paper for recycling and influences the paper quality. This research project investigated the influence of the multiple recycling of five different corrugated base papers (kraftliner, neutral sulfite semichemical [NSSC] fluting, corrugating medium, testliner 2, and testliner 3) on suspension and strength properties under laboratory conditions. The corrugated board base papers were repulped in a low consistency pulper and processed into Rapid-Köthen laboratory sheets. The sheets were then recycled up to 15 times in the same process. In each cycle, the suspension and the paper properties were recorded. In particular, the focus was on corrugated board-specific parameters, such as short-span compression test, ring crush test, corrugating medium test, and burst. The study results indicate how multiple recycling under laboratory conditions affects fiber and paper properties.

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