Abstract
The possible introduction of potential mosquito vectors of disease from one country to another is a matter of considerable public health concern. Such introductions have occurred both by aircrafts and by ships. A survey was therefore carried out on vessels arriving from abroad at Qinhuangdao Port, P. R. China, to determine whether mosquitoes were aboard the incoming ships. Many of the arriving ships were found positive for mosquitoes with an average rate of positive ships being 56. 81% (417/734). Thirteen species of mosquitoes were identified, but three species, namely: Culex modestus Ficalbi, 1889, Cx. tritaeniorhynchus Giles, 1901 and Aedes dorsalis (Meigen, 1830) were the dominant mosquito species found. The findings show that introduced mosquitoes may represent a serious problem.
