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Taxonomic status of the Bemisia tabaci complex (Hemiptera: Aleyrodidae) and reassessment of the number of its constituent species

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  • URLhttps://db.koreascholar.com/Article/Detail/287797
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한국응용곤충학회 (Korean Society Of Applied Entomology)
초록

Bemisia tabaci (Hemiptera: Aleyrodidae) is one of the most important insect pests in the world. In the present study, the taxonomic status of B. tabaci and the number of species consisting of the B. tabaci complex were determined based on 1059 COI sequences of B. tabaci and 509 COI sequences of 153 hemipteran species. The genetic divergence within B. tabaci was conspicuously higher (onaverage,11.1%) than interspecific genetic divergence within the respective genera of the 153 hemipteran species (on average, 6.5%). This result indicates that B. tabaci is composed of multiple biological species that may belong to different genera or subfamilies. The phylogenetic tree constructed based on 212 COI sequences without duplications revealed that the B. tabaci complex is composed of a total of 31 putative species, including a new species, JpL. However, genetic divergences within five species, Asia III, Asia II 7, Mediterranean, New world, and Sub Saharan Africa 1, were higher than 3.5%, which has previously been used as a threshold of genetic boundary in distinguishing species of the B. tabaci complex. These results suggest the necessity to redefine the threshold for species boundaries to best distinguish the constituent species in the B.tabaci complex.

저자
  • Wonhoon Lee(Crop Protection Division, National Academy of Agricultural Science, RDA, Suwon 441-707, Korea)
  • Seunghwan Lee(Insect Biosystematics Laboratory, Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul 151-921, Korea)
  • Shin-ichi Akimoto(Laboratory of Systematic Entomology, Department of Ecology and Systematics, Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo 060-8589, Japan)
  • Gwan-Seok Lee(Crop Protection Division, National Academy of Agricultural Science, RDA, Suwon 441-707, Korea)