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Qin Yujia,Ullah Farman,Fang Yan,Singh Sandeep,Zhao Zhonghua,Zhao Zihua,Li Zhihong 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.4
The peach fruit fly (PFF), Bactrocera zonata (Diptera: Tephritidae), is among the most destructive Bactrocera fruit fly species in Asia and Africa. The peach fruit fly is currently absent from China but has high risk of invasion to China. This study primarily quantifies the direct potential economic impact of B. zonata in China using Monte Carlo simulation model, taking peaches as the example hosts. The results showed that under nil management scenario, the potential economic loss in China caused by B. zonata would be 0.82–3.07 billion dollars (90% confidence level), and potential savings after management will be 0.20–1.00 billion dollars (90% confidence level). Quarantine measures against B. zonata and field control should be strengthened to prevent its introduction and reduce the potential economic impact in China.
Zhongshan Wang,Haiyan Qin,Zhihong Feng,Guofeng Wu,Shizhu Bai,Yan Dong,Yimin Zhao 한국생물공학회 2015 Biotechnology and Bioprocess Engineering Vol.20 No.3
Bacterial invasion and epithelial downgrowth with pocket formation are still severe clinical challenges for transcutaneous implants, and both have a close relationship with the lack of a stable biological seal around the transcutaneous parts. Dermal fibroblasts are the main cells in the skin tissue and have been proven to play vital roles in the formation of biological seals. In this work, platelet-rich plasma (PRP), which can release high concentrations of natural cytokines upon activation, was used to stimulate rapid fibroblast growth. Mussel adhesive proteins (MAPs) were used as mediators to anchor the platelets in the PRP onto Ti surfaces, and MAP/PRP composite-coated Ti surfaces were constructed successfully. This in vitro study indicated increased fibroblast adhesion (P < 0.05), spreading, and proliferation (P < 0.05) and upregulated extracellular matrix-related gene expression (P < 0.05) on a MAP/PRP composite-coated Ti surface compared with a control smooth Ti surface. Our results suggest that MAP/PRP composite-coated Ti surfaces are potentially useful for the formation of a stable biological seal in transcutaneous areas.
Afroz Sultana,Noman Md Shibly,Zhang Yue,Qin Yujia,Chowdhury S.M. Kamrul Hasan,Li Zhihong 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.2
Oriental fruit fly, Bactrocera dorsalis (Hendel), is a destructive and highly polyphagous invasive fruit fly species of numerous fruit crops in global agriculture. Population genetic structure of this species from five different lo cations of Bangladesh was examined with other samples (collected from GenBank) from 15 sites of neighboring Asian countries. A fragment of 770 bp mitochondrial DNA cox1 was used to investigate the genetic diversity and the relationship between genetic patterns and geographical distribution of B. dorsalis. A total of 232 variable sites (33.23% of the 698 bp aligned consensus sequences) and 419 unique haplotypes were identified from 710 in dividuals. Indices of genetic diversity suggested that without exclusion from geographical areas, B. dorsalis retained a relatively high degree of genetic diversity. A demographic assessment [Tajimas’ D test, Fu’s Fs test and sum of square deviation (SSD values)] revealed that both current and historical variables performed a significant role in deciding the weak genetic structure with some exceptions. In Bangladesh, high levels of genetic diversity with a weak genetic structure indicated that the severity of this pest might increase in the future. Proper management techniques should be taken to overcome the future severity of this kind of destructive insect.