Yunnan Tropical and Subtropical Animal Virus Diseases Laboratory, Yunnan Animal Science and Veterinary Institute, Kunming 650224, Yunnan Province, China.
Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, NT 0909, Australia - Department of Agriculture, Water and the Environment, Darwin, NT 0820, Australia.
Parasite. 2022;29:26. doi: 10.1051/parasite/2022027. Epub 2022 May 11.
Culicoides (Diptera, Ceratopogonidae) are small biting midges, some of which are vectors for animal associated arboviruses such as bluetongue virus (BTV) and Akabane virus (AKAV). BTV and AKAV are both pathogenic for livestock, with BTV in particular posing a major threat to domestic ruminants. Ongoing problems with BTV in ruminants in Shizong County of Yunnan Province, China, promoted a year-long investigation of the Culicoides in Shizong to determine relative abundance and seasonality of midges and to attempt to identify species that might be acting as vectors in the area. Culicoides were collected by UV light trap for one night per week for most weeks between May 2020 and May 2021. More than 21,000 specimens consisting of at least 21 species belonging to six subgenera and one unplaced group, including 5 species previously associated with BTV and one associated with AKAV, were collected. Culicoides tainanus dominated most collections throughout the year although C. sumatrae was often the dominant species over summer. Most species were abundant between May and October. These results indicate that C. tainanus, C. jacobsoni and C. oxystoma are the major midge pests of livestock in Shizong and should be considered in any disease investigation.
虻科（双翅目，蠓科）是小型吸血蠓，其中一些是与动物相关的虫媒病毒（如蓝舌病病毒（BTV）和阿卡斑病毒（AKAV））的载体。BTV 和 AKAV 都对牲畜具有致病性，尤其是 BTV 对家畜反刍动物构成重大威胁。中国云南省师宗县反刍动物 BTV 持续存在问题，促使对师宗的虻进行了为期一年的调查，以确定虻的相对丰度和季节性，并试图确定可能在该地区充当媒介的物种。虻每周用紫外线诱捕器收集一次，持续了 2020 年 5 月至 2021 年 5 月的大部分时间。收集了超过 21000 个标本，至少有 21 个物种属于六个亚属和一个未定位的组，包括 5 种以前与 BTV 相关的物种和一种与 AKAV 相关的物种。在一年中的大部分时间里，台虻都占主导地位，尽管在夏季，苏门答腊虻通常是优势物种。大多数物种在 5 月至 10 月间丰富。这些结果表明，台虻、Jacobson 虻和 Oxystoma 虻是师宗牲畜的主要虻害，在任何疾病调查中都应加以考虑。
