Results 161 to 170 of about 42,048 (203)
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Naphthalene in Formosan Subterranean Termite Carton Nests
Journal of Agricultural and Food Chemistry, 1998Naphthalene was detected in nest cartons of Formosan subterranean termites, Coptotermes formosanus Shiraki. The concentration of naphthalene ranges from 50.56 to 214.6 μg/kg. This is the first report of naphthalene being associated with termites. Some possible functions of naphthalene in a termite society are discussed.
Jian Chen +4 more
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Feeding cessation after feeding on 20‐hydroxyecdysone in the Formosan subterranean termite
Pest Management Science, 2023AbstractBACKGROUNDTo control subterranean termite pests, chitin synthesis inhibitor (CSI) baits have been widely applied. Despite CSI baits having low impacts on the environment, they require a lengthy time period to eliminate colonies. 20‐hydroxyecdysone (20E) was proposed to speed up the baiting process as it showed faster mortality than CSI baits ...
Sang‐Bin Lee +4 more
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Journal of Chemical Ecology, 2003
Eight valencenoid derivatives were evaluated for their repelling activity against Formosan subterranean termites, Coptotermes formosanus Shiraki. Among them, 1,10-dihydronootkatone was the strongest repellent, and valencene was the weakest. Results of the structure-repellency relationships indicated (1) reduction of the ketone group to the alcohol on ...
Betty C R, Zhu +5 more
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Eight valencenoid derivatives were evaluated for their repelling activity against Formosan subterranean termites, Coptotermes formosanus Shiraki. Among them, 1,10-dihydronootkatone was the strongest repellent, and valencene was the weakest. Results of the structure-repellency relationships indicated (1) reduction of the ketone group to the alcohol on ...
Betty C R, Zhu +5 more
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Journal of Economic Entomology, 2016
In termites, it is challenging to recognize the incidence of molting in workers because of their successive stationary molt, asynchronous molting among individuals, cryptic behavior, a soft and poorly sclerotized cuticle, and they immediately consume the shed exuvia of nestmates.
Garima, Kakkar +2 more
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In termites, it is challenging to recognize the incidence of molting in workers because of their successive stationary molt, asynchronous molting among individuals, cryptic behavior, a soft and poorly sclerotized cuticle, and they immediately consume the shed exuvia of nestmates.
Garima, Kakkar +2 more
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Behavioral variation among tunnelers in the Formosan subterranean termite
Journal of Asia-Pacific Entomology, 2010Abstract Division of labor is a common feature of insect societies and has been theorized to account for much of their success. Asymmetries in the work of individuals, whose aggregate labor results in the completion of a task, can lead to the emergence of key individuals that dominate or govern the task. Coptotermes formosanus Shiraki excavate in a
Paul Bardunias +2 more
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Journal of Economic Entomology, 2005
Time trends in mortality for the Formosan subterranean termite, Coptotermes formosanus Shiraki, and eastern subterranean termite, Reticulitermes flavipes (Kollar), were determined for thiamethoxam and fipronil. Filter paper treated with 50 ppm thiamethoxam led to >80% mortality in 2-4 d for R.
Laura N, Remmen, Nan-Yao, Su
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Time trends in mortality for the Formosan subterranean termite, Coptotermes formosanus Shiraki, and eastern subterranean termite, Reticulitermes flavipes (Kollar), were determined for thiamethoxam and fipronil. Filter paper treated with 50 ppm thiamethoxam led to >80% mortality in 2-4 d for R.
Laura N, Remmen, Nan-Yao, Su
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Foraging Behavior of the Formosan Subterranean Termite (Isoptera: Rhinotermitidae)
Environmental Entomology, 1984A field study was conducted to examine the foraging pattern of the Formosan subterranean termite, Coptotermes formosanus Shirah A dye, Sudan Red 7B, was used as a marking material to identify foragers feeding at specific foraging sites. The results showed that the termites selected their foraging sites at random.
Nan-Yao Su +3 more
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Journal of Economic Entomology, 1990
Toxicities of 11 topically applied termiticides to the Formosan subterranean termite, Coptotermes formosanus Shiraki, and the eastern subterranean termite, Reticulitermes flavipes (Kollar) were determined. At LD50, deltamethrin was most toxic (0.12 and 0.01 μg/g for C. Formosan us and R.
Nan-Yao Su, Rudolf H. Scheffrahn
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Toxicities of 11 topically applied termiticides to the Formosan subterranean termite, Coptotermes formosanus Shiraki, and the eastern subterranean termite, Reticulitermes flavipes (Kollar) were determined. At LD50, deltamethrin was most toxic (0.12 and 0.01 μg/g for C. Formosan us and R.
Nan-Yao Su, Rudolf H. Scheffrahn
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Colony Dynamics of the Formosan Subterranean Termite in a Frequently Disturbed Urban Landscape
Journal of Economic Entomology, 2007The success of evaluating areawide control of the Formosan subterranean termite, Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae), in urban landscapes hinges on detailed understanding of colony movement and plasticity of the breeding system. Most previous studies of colony affiliation and breeding systems of C.
Gabriel A, Aluko, Claudia, Husseneder
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Coptotermes formosanus (Formosan subterranean termite).
2021Abstract C. formosanus is often transported by boats and shipping containers to port cities before being carried further inland via landscape materials such as railroad ties (railway sleepers). This may explain the current C. formosanus distribution in the USA with coastal areas more densely infested than inland areas (Hochmair and ...
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