scholarly journals In situ morphology of the gut microbiota of wood-eating termites [Reticulitermes flavipes (Kollar) and Coptotermes formosanus Shiraki].

1977 ◽  
Vol 33 (2) ◽  
pp. 406-426 ◽  
Author(s):  
J A Breznak ◽  
H S Pankratz
Keyword(s):  
Gut Microbiota ◽  
Reticulitermes Flavipes ◽  
Coptotermes Formosanus ◽  
Coptotermes Formosanus Shiraki ◽  
In Situ Morphology

New Termite (Isoptera: Kalotermitidae, Rhinotermitidae) Records from Georgia

2001 ◽  
Vol 36 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Rudolf H. Scheffrahn ◽  
Nan-Yao Su ◽  
James A. Chase ◽  
Brian T. Forschler
Keyword(s):  
Reticulitermes Flavipes ◽  
Coptotermes Formosanus ◽  
Pest Species ◽  
Nomen Nudum ◽  
Termite Species ◽  
Incisitermes Minor ◽  
Coptotermes Formosanus Shiraki

Deliberate surveys and submitted samples have yielded five termite species not previously recorded from Georgia including Coptotermes formosanus Shiraki (Family Rhinotermitidae), and Calcaritermes nearcticus (Snyder), Cryptotermes brevis (Walker), Incisitermes minor (Hagen), and Kalotermes approximatus Snyder (Family Kalotermitidae) bringing the total number of termite species in Georgia to nine. Coptotermes formosanus, C. brevis, and I. minor are all non-endemic pest species in Georgia. The Georgia records for C. nearcticus are the first outside of Florida and represent new northern limits, while collections of K. approximatus bridge a former gap in its north-south distribution. Previous records for Reticulitermes flavipes (Kollar), R. hageni Banks, and R. virginicus (Banks) (Family Rhinotermitidae), and Incisitermes snyderi (Light) (Kalotermitidae) are confirmed, while the name R. malletei is relegated to nomen nudum status. The prospects for additional termite records and status of Reticulitermes taxonomy in Georgia are discussed.

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 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.

scholarly journals Concentration-Dependent Feeding Deterrence to 20-Hydroxyecdysone for Three Subterranean Termite Species (Blattodea: Rhinotermitidae)

Insects ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 218
Author(s):  
Lucas Carnohan ◽  
Sang-Bin Lee ◽  
Nan-Yao Su
Keyword(s):  
Reticulitermes Flavipes ◽  
Coptotermes Formosanus ◽  
Subterranean Termite ◽  
Choice Test ◽  
Molting Hormone ◽  
Feeding Deterrence ◽  
Insect Feeding ◽  
Substrate Consumption ◽  
Termite Species ◽  
Potential Methods

Effective active ingredients in toxicant bait formulations must be non-deterrent to insect feeding behavior at lethal concentrations. This study evaluated feeding deterrence for Coptotermes formosanus Shiraki, C. gestroi (Wasmann), and Reticulitermes flavipes (Kollar) when provided access to cellulose impregnated with various concentrations of the insect molting hormone, 20-hydroxyecdysone (20E). Termites were exposed to 20E concentrations of 200, 500, 1000 and 2000 ppm and to noviflumuron at 5000 ppm in a 24 h choice-test, and the mass of substrate consumption from treated and untreated media pads was compared for each treatment. 20E feeding deterrence was detected at 500, 1000 and 2000 ppm for C. gestroi, and at 2000 ppm for C. formosanus. No significant differences in consumption of treated and untreated substrate was detected at any concentration for R. flavipes. Potential methods for reducing deterrence are discussed.

The Effect of Variables on Laboratory Termite Testing: Part 4—Test Block Species, Size, and Test Photoperiod

2021 ◽  
Vol 71 (2) ◽  
pp. 95-100
Author(s):  
G. B. Lindsey ◽  
T. L. Amburgey ◽  
H. M. Barnes
Keyword(s):  
Native Species ◽  
Wood Sample ◽  
Treated Wood ◽  
Reticulitermes Flavipes ◽  
Coptotermes Formosanus ◽  
Standard Laboratory ◽  
Yellow Pine ◽  
Southern Yellow Pine ◽  
The Impact ◽  
Standard Tests

Abstract The objective of this study was to determine the impact on termite feeding of wood sample size and species and test photoperiod in standard tests. Native species (Reticulitermes flavipes) and introduced species (Coptotermes formosanus) were tested in an American Wood-Preservers' Association E1 standard laboratory test. For testing involving treated wood, southern yellow pine was determined to be preferable to spruce based on its treatability and availability. Test blocks of 25 by 25 by 6 mm were deemed adequate for testing, with large blocks presenting difficulty with retrieval of termites to determine mortality and smaller blocks being consumed too rapidly by the termites in the test. Photoperiod comparisons were not significantly different for R. flavipes; however, C. formosanus indicated a preference for 100 percent darkness. Therefore, the recommendation is to maintain tests using each species in a 100 percent dark environment.

Sign in / Sign up

Export Citation Format

Share Document