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Occurrence of a novel strain of Scirtothrips dorsalis (Thysanoptera: Thripidae) in Japan and development of its molecular diagnostics |
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| Authors: | Satoshi Toda Takuya Hirose Kanako Kakiuchi Hirosato Kodama Keisuke Kijima Masatoshi Mochizuki |
| Affiliation: | 1. Breeding and Pest Management Division, NARO Institute of Fruit Tree Science (NIFTS), National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8605, Japan 2. Kochi Prefectural Agriculture Research Center, Nankoku, Kochi, 783-0023, Japan 3. Okinawa Prefectural Plant Protection Center, Naha, Okinawa, 902-0072, Japan 6. Okinawa Prefectural Government, Naha, Okinawa, 900-8570, Japan 4. Okinawa Prefectural Agricultural Research Center, Itoman, Okinawa, 901-0336, Japan 5. Okitsu Citrus Research Station, NARO Institute of Fruit Tree Science (NIFTS), National Agriculture and Food Research Organization (NARO), Shizuoka, Shizuoka, 424-0292, Japan |
| Abstract: | Scirtothrips dorsalis Hood is a cosmopolitan and polyphagous thrips species. Recently, a novel strain of S. dorsalis attacking capsicum crops was found in Japan. A molecular phylogenetic analysis using mitochondrial cytochrome c oxidase subunit I sequences revealed that the capsicum-associated populations were genetically different from Japanese native strains and were closely related to Southeast Asian populations. We named the capsicum-associated populations “strain C” and the Japanese native ones “strain YT”. A total of 10 haplotypes were found in strain C and 26 in strain YT. To differentiate the two strains, we developed a multiplex-PCR method using the ribosomal ITS2 region. |
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