Response variability of juvenile hormone and juvenile hormone analogs in workers of the Formosan subterranean termite (Coptotermes formosanus Shiraki) |
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| Institution: | 1. Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China;2. Nanning Institute of Termite Control, Nanning, China;1. State Key Laboratory of Biocontrol, School of Life Sciences/School of Ecology, Sun Yat-sen University, Guangzhou 510275, China;2. Universidade Federal do Espírito Santo, Departamento de Ciências Biológicas, Av. Fernando Ferrari 514, Goiabeiras, 29.075-910, Vitória, ES, Brazil;1. Entomology Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700 019, India;2. Cell and Molecular Therapeutics Laboratory, Department of Biochemistry and Biotechnology, Oriental Institute of Science and Technology, Vidyasagar University, Midnapore 721102, West Bengal, India;1. Entomology Program, Department of Agricultural Biotechnology, Seoul National University, 1, Gwanakro, Gwanakgu, Seoul 08826, Republic of Korea;2. Research Institute of Agriculture and Life Sciences, Seoul National University, 1, Gwanakro, Gwanakgu, Seoul 08826, Republic of Korea;1. Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, No 18, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam;2. Graduate University for Science and Technology, Vietnam Academy of Science and Technology, No 18, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam;3. Vinh University, No 182, Le Duan, Vinh, Nghe An, Viet Nam;1. Department of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea;2. Department of Zoology, Faculty of Life Sciences, University of Ilorin, Kwara State, Nigeria;3. Department of Entomology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Dhaka, Bangladesh;4. Institute of Plant Medicine, Kyungpook National University, Daegu, Republic of Korea |
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| Abstract: | Juvenile hormone (JH) or juvenile hormone analog (JHA) can induce soldier formation in termites. However, different studies have yielded inconsistent results on the effects of JHA on soldier production in Coptotermes formosanus Shiraki. Using filter paper as the testing substrate, the effects of JH III, pyriproxyfen and methoprene on the intact filter paper left, worker mortality and presoldier formation were tested on six colonies. Our results showed that pyriproxyfen and methoprene were more repellent than JH III. No significant difference in toxicity was observed among methoprene, pyriproxyfen and JH III. JH III and pyriproxyfen did not cause workers to differentiate into presoldiers, but methoprene can induce formation of presoldiers. Colony response variability to methoprene was observed. The confirmation of the effects of JH/JHA on C. formosanus establishes the foundation for molecular studies of soldier differentiation in this species. |
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