@article{WANG2026, 
author = {Huan-Ting WANG and Li-Fei HUANG and Rui GONG and Xue-Mei CAO and Xia-Lin ZHENG and Lang YANG},
title = {Genetic differentiation analysis of cowpea thrips populations in Guangxi based on mitochondrial COI gene},
year = {2026},
journal = {Journal of Environmental Entomology},
volume = {48},
number = {1},
pages = {258-269},
keywords = {Cowpea thrips, COI genes, population identification, genetic differentiation},
url = {https://www.sciopen.com/article/10.3969/j.issn.1674-0858.2026.01.27},
doi = {10.3969/j.issn.1674-0858.2026.01.27},
abstract = {AimTo elucidate the thrips species composition infesting cowpea fields of Guangxi,Methodssystematic thrips sampling was conducted in cowpea fields across 14 prefecture-level municipalities. Mitochondrial cytochrome oxidase subunit I (COI) gene sequencing was employed to assess diversity, genetic differentiation, and phylogenetic relationships among thrips population.ResultsFrom the 234 successfully amplified sequence fragments, five thrips species were identified: Megalurothrips usitatus, Frankliniella intonsa, Thrips hawaiiensis, Thrips palmi, and Haplothrips chinensis. Among them, M. usitatus was the dominant species. Sequence analysis revealed seven distinct haplotypes in M. usitatus, six in F. intonsa, five each in T. hawaiiensis and H. chinensis, and two in T. palmi. Genetic differentiation and gene flow were observed among M. usitatus populations across most regions, followed by F. intonsa and H. chinensis. In contrast, T. hawaiiensis and T. palmi exhibited minimal genetic differentiation among most sampled locations, except in isolated cases.ConclusionThis research provides a foundation for developing scientifically sound control strategies against cowpea thrips in the region.}
}