Solving the 250-year- old mystery of the origin and global spread of the German cockroach, Blattella germanica
成果类型：
Article
署名作者：
Tang, Qian; Vargo, Edward L.; Ahmad, Intan; Jiang, Hong; Varadinova, Zuzana Kotykova; Dovih, Pilot; Kim, Dongmin; Bourguignon, Thomas; Booth, Warren; Schal, Coby; Mukha, Dmitry, V; Rheindt, Frank E.; Evans, Theodore A.
署名单位：
National University of Singapore; Texas A&M University System; Texas A&M University College Station; Institute Technology of Bandung; Wuhan University; Charles University Prague; National Museum; Ashoka University; State University System of Florida; University of Florida; Okinawa Institute of Science & Technology Graduate University; Czech Academy of Sciences; Biology Centre of the Czech Academy of Sciences; Virginia Polytechnic Institute & State University; North Carolina State University; Russian Academy of Sciences; Vavilov Institute of General Genetics; University of Western Australia
刊物名称：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN/ISSBN：
0027-12108
DOI：
10.1073/pnas.2401185121
发表日期：
2024-05-28
关键词：
摘要：
the genus is Asian, where its closest relatives are found. To solve this paradox, we sampled genome- wide markers of 281 cockroaches from 17 countries across six continents. We confirm that B. germanica evolved from the Asian cockroach Blattella asahinai approximately 2,100 ya, probably by adapting to human settlements in India or Myanmar. Our genomic analyses reconstructed two primary global spread routes, one older, westward route to the Middle East coinciding with various Islamic dynasties (-1,200 ya), and another younger eastward route coinciding with the European colonial period (-390 ya). While Europe was not central to the early domestication and spread of the German cockroach, European advances in long- distance transportation and temperature- controlled housing were likely important for the more recent global spread, increasing chances of successful dispersal to and establishment in new regions. The global genetic structure of German cockroaches further supports our model, as it generally aligns with geopolitical boundaries, suggesting regional bridgehead populations established following the advent of international commerce.