Some important information about cybister chinensis 06/11/2021

It’s @sagorkhan01 from Bangladesh.

Hope everybody is well. Today I will talk about cybister chinensis.

Cybister tripunctatus orientalis Gschwendtner (adult body length: 24–29 mm) is found in China, the Korean Peninsula, Taiwan, and Japan excluding Hokkaido.The numbers of C. tripunctatus orientalis are declining in most regions of Japan, and it is included in the Red Data List of species in 34 of 47 prefectures of Japan [2, 3]. Cybister tripunctatus orientalis has become extinct in Tokyo, Kanagawa, Aichi, Kyoto, Osaka, Wakayama, and Hyogo (it was rediscovered in Hyogo in 2010: [4]). Contributing factors, such as a decreasing number of suitable aquatic habitats due to the abandonment of rice paddies, water pollution, pesticide application, and invasion by alien species, are of great concern [2, 5]. In addition, the sizes of predatory invertebrate populations are limited by their food resources, as is true for any predatory insect [6–8]. Thus, understanding their trophic ecology is necessary to support an insect conservation program. However, basic ecological information about C. tripunctatus orientalis, such as their feeding.

Rice fields are an important breeding habitat for aquatic insects [19] including C. tripunctatus orientalis in Japan. However, the species diversity in rice fields has been declining due to recent land consolidation, the modification of traditional earth ditches to U-shaped concrete ditches in Japan [5, 20]. Therefore, poorly drained paddies, which are wet in winter and kept flooded throughout summer, are suitable to conserve the aquatic invertebrates as well as C. tripunctatus orientalis.