scholarly journals Comparative Study of the Resistance of Six Hawaii-Grown Bamboo Species to Attack by the Subterranean Termites Coptotermes formosanus Shiraki and Coptotermes gestroi (Wasmann) (Blattodea: Rhinotermitidae)

Insects ◽  
2011 ◽  
Vol 2 (4) ◽  
pp. 475-485 ◽  
Author(s):  
Nirmala K. Hapukotuwa ◽  
J. Kenneth Grace
Keyword(s):  
Comparative Study ◽  
Coptotermes Formosanus ◽  
Subterranean Termites ◽  
Bamboo Species ◽  
Coptotermes Formosanus Shiraki ◽  
Coptotermes Gestroi

scholarly journals Performance of Altriset (TM) (Chlorantraniliprole) Termiticide Against Formosan Subterranean Termites, Coptotermes formosanus Shiraki, in Laboratory Feeding Cessation and Collateral Transfer Trials, and Field Applications

Sociobiology ◽  
2015 ◽  
Vol 59 (2) ◽  
pp. 531 ◽  
Author(s):  
Robert T. Puckett ◽  
Chris Keefer ◽  
Roger E Gold
Keyword(s):  
Environmental Protection Agency ◽  
Field Experiments ◽  
Field Trials ◽  
Coptotermes Formosanus ◽  
Post Treatment ◽  
Subterranean Termites ◽  
Feeding Intensity ◽  
Treated Soil ◽  
Coptotermes Formosanus Shiraki ◽  
The Mean

Chlorantraniliprole represents the first compound to be registered as a termiticide by the Environmental Protection Agency (EPA) in over a decade. This novel termiticide is currently registered as a 'reduced-risk pesticide' by the EPA. Laboratory and field trials were conducted to quantify mortality of Formosan subterranean termites (FST), Coptotermes formosanus Shiraki resulting from chlorantraniliprole treated soil, the degree to which the termites curtail feeding intensity post-exposure to chlorantraniliprole treated soil, collateral transfer of chlorantraniliprole among nest mates, and the effectiveness of chlorantraniliprole as a remedial treatment against structural infestations of HT. Termites which were exposed to chlorantraniliprole treated soil consumed significantly less paper than unexposed FST. The mean percent mortality of those termites exposed to chlorantraniliprole treated soil was significantly greater than that of unexposed FST. Depending on donor:recipient ratios, the mean mortality of recipients ranged from 14.65 - 90.00 % in the collateral transfer trials. There was a positive correlation between increased donor density and recipient mortality. Through 24 mo post-treatment, 27.3% of the structures which were treated in field trials were observed to have infestations of termites that required re-treatment; however, no FST were observed during the 30 and 36 month post-treatment inspections. Additionally, a novel scoring rubric was developed that will allow standardization of field study sites with respect to dissimilarity in site variables, and will allow for more consistent comparison of results across disparate field experiments. An explanation for the lack of successful remediation of many of the structures involved in the field trial is proposed and is based on our novel scoring system.

RETENTION TIME AND TOXICITY OF A DYE MARKER, SUNDAN RED 7B, ON FORMOSAN AND EASTERN SUBTERRANEAN TERMITES (ISOPTERA: RHINOTERMITIDAE)

1988 ◽  
Vol 23 (3) ◽  
pp. 235-239 ◽  
Author(s):  
Nan-Yao Su ◽  
Rudolf H. Scheffrahn ◽  
Paul Ban
Keyword(s):  
Population Size ◽  
Retention Time ◽  
Reticulitermes Flavipes ◽  
Coptotermes Formosanus ◽  
Subterranean Termite ◽  
Subterranean Termites ◽  
Mark Recapture ◽  
Coptotermes Formosanus Shiraki ◽  
Eastern Subterranean Termite ◽  
Significant Mortality

Workers of the Formosan subterranean termite, Coptotermes formosanus Shiraki, and the eastern subterranean termite, Reticulitermes flavipes (Kollar) were force-fed a dye marker, Sudan Red 7B, and confined with different proportions of unmarked termites. No significant mortality due to the dye was detected for up to 8 weeks after the treatment in either species. The marked/unmarked proportion did not affect the retention of the dye or mortality. Workers of C. formosanus retained visible dye for 6 weeks, while significant numbers (10–50%) of marked R. flavipes lost the dye within two weeks. Sudan Red 7B is suitable for estimating population size of C. formosanus with the multiple-marking method where the mark-recapture period extends to 6 weeks. The dye is not an adequate marker for R. flavipes when the mark-recapture period is ≥ 2 weeks.

scholarly journals Coptotermes formosanusandCoptotermes gestroi(Blattodea: Rhinotermitidae) Exhibit Quantitatively Different Tunneling Patterns

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Nirmala K. Hapukotuwa ◽  
J. Kenneth Grace
Keyword(s):  
Spatial Dispersion ◽  
Coptotermes Formosanus ◽  
Subterranean Termite ◽  
Foraging Strategies ◽  
Subterranean Termites ◽  
Termite Species ◽  
Coptotermes Gestroi ◽  
Distribution And Ecology ◽  
Tunneling Behavior ◽  
Made In

Tunneling behavior and the spatial dispersion of tunnels constructed by the subterranean termitesCoptotermes formosanusShiraki andCoptotermes gestroi(Wasmann) (formerly known asC. vastatorLight) (Blattodea: Rhinotermitidae) were examined in foraging arenas. The results indicated that these two termite species construct quantitatively different tunnel systems, supporting visual observations made in earlier studies.Coptotermes gestroiconstructed thin, highly branched tunnels, whileC. formosanustended to construct wider and less branched tunnels. Tunnels ofC. gestroishowed more spatial dispersion than those ofC. formosanus, and this species constructed a larger number of tunnels compared toC. formosanus. The presence or absence of food (wood) within the arena did not influence the tunneling pattern of either species. Although previous observations have suggested that these two termite species exhibit different tunneling behaviors; this is the first quantification of the differences. Comparative studies of the foraging behavior of subterranean termite species contribute to our understanding of their distribution and ecology and may help to improve pest management programs, particularly those based on placement of toxic baits. Moreover, differences in tunneling patterns may reflect different foraging strategies optimized for either tropical (C. gestroi) or subtropical/temperate (C. formosanus) environments.

scholarly journals Temperature-Mediated Variations in Behavior and Mortality Caused by Non-Repellent Insecticides in Subterranean Termites (Blattodea: Rhinotermitidae)

Insects ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 37
Author(s):  
Franklin Quarcoo ◽  
Xing Hu ◽  
Arthur Appel
Keyword(s):  
Reticulitermes Flavipes ◽  
Coptotermes Formosanus ◽  
Subterranean Termite ◽  
Behavioral Symptoms ◽  
Subterranean Termites ◽  
Coptotermes Formosanus Shiraki ◽  
Lethal Time

Behavioral symptoms and mortality associated with intoxication with insecticides fipronil and indoxacarb were determined in field-collected eastern subterranean termites, Reticulitermes flavipes (Kollar), and Formosan subterranean termites, Coptotermes formosanus Shiraki. Behaviors and mortality were evaluated at three temperatures (16, 22, and 28 °C) and three concentrations of fipronil (0.5, 1, and 5 ppm) and indoxacarb (50, 75, and 100 ppm). LT50 (median lethal time to kill 50% of the termites) values declined with increasing concentrations and temperatures for both fipronil-exposed eastern and Formosan subterranean termites, whereas these values were not always the highest at 16 °C for indoxacarb-treated termites. The greatest change (reduction) in LT50 values occurred for both species between 16 and 22 °C at the lowest concentration of each insecticide. Intoxication and moribundity were the most frequently observed behaviors for fipronil-exposed termites, whereas intoxication, ataxia, and moribundity were observed for most concentration and temperature combinations for indoxacarb-exposed termites. The inherent toxicity of fipronil was higher than that of indoxacarb. The higher presence and duration of intoxication behaviors may positively affect the performance of indoxacarb against subterranean termite colonies.

Terpene-lnduced Morphological Changes to Exoskeleton of Formosan Subterranean Termites (Isoptera: Rhinotermitidae): Toxic Effects of cis-nerol

2003 ◽  
Vol 38 (2) ◽  
pp. 225-233
Author(s):  
Betty C. R. Zhu ◽  
Gregg Henderson ◽  
Huixin Fei ◽  
Xiao Ying ◽  
Roger A. Laine
Keyword(s):  
Soluble Fraction ◽  
Morphological Changes ◽  
Significant Loss ◽  
Coptotermes Formosanus ◽  
Water Soluble ◽  
Subterranean Termite ◽  
Subterranean Termites ◽  
Water Soluble Fraction ◽  
Coptotermes Formosanus Shiraki ◽  
Scanning Electron

The terpenoid, cis-nerol was found to be highly toxic to the Formosan subterranean termite, Coptotermes formosanus Shiraki. Morphological abnormalities were observed in the exoskeleton including the spiracles and trichoid sensilla using scanning electron microscopy after exposure of termites to cis-nerol for 2 h. Proteins were found in a water-soluble fraction collected from the whole termite body exposed to cis-nerol for 60 min. It appears that terpenoids cause damage to cell membranes resulting in a significant loss of proteins.

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