Series:

NIU Jun

In The Cold War and the Origin of Diplomacy of People’s Republic of China, Niu Jun offers a new analytical framework for understanding the Cold War and PRC’s diplomacy from 1949 to 1955. He sees it as an interactive historical process between the Cold War, China’s domestic transition from revolution to nation-building, and the revolutionary ideology in the minds of Chinese leaders and Chinese people.

Niu Jun’s analytical framework sheds fresh light on the widely studied events of PRC’s diplomacy such as China’s alliance with the Soviet Union and confrontation with the U.S., military actions on the Korean Peninsula and in Indochina, settlement of the first Taiwan Strait crisis, development of nuclear weapons, and so on.

Jun-yu Chen, Yu-lin Gao, Dong-yin Han, Lei Li, Fang-ping Zhang, Li-ming Niu and Yue-guan Fu

Abstract

Mango is an important tropical fruit, and thrips are important pests that have threatened mango yield and quality in recent years. It is important to determine the dominant species and distribution of thrips in mango for effective thrips control. In the present study, the species of thrips in mango flowers in the five main mango-producing provinces of China, and the species of thrips in different phenological stages of mango in Hainan Province were investigated. Thrips species on weeds in mango agroecosystems were also determined. The results indicated that in total there are 41 species of thrips in mango orchards in the five main mango-producing provinces of China, belonging to 21 genera, five subfamilies and three families. These are 31 species in 13 genera of Thripidae, nine species in seven genera of Phlaeothripidae, and one species in one genus of Aeolothripidae. The major species of thrips differed across the main mango production areas. Thus, 26, 17, 23, 12 and 7 species of thrips were collected in mango orchards in Hainan, Guangxi, Yunnan, Sichuan and Fujian, respectively. Frankliniella occidentalis (Pergande), an important invasive pest in China, was only discovered in mango orchards in Yunnan and Sichuan. Thrips species and population dynamics are closely related to the phenological stage of mango. In Hainan, the dominant thrips species during the shoot period and young fruit stage was Scirtothrips dorsalis Hood. In the flowering period, the thrips population increased significantly and species composition became complicated in the field, with Thrips hawaiiensis and F. intonsa being the dominant species. Frankliniella intonsa and T. hawaiiensis were the dominant species on weeds in the mango ecosystem, which was consistent with them being dominant thrips species on mango. It is speculated that in mango ecosystems, weeds provide refuge to thrips and removing weeds benefits thrips control in mango orchards during the flowering period.