American shad Alosa sapidissima were introduced into China for aquaculture several years ago. Growth and reproduction of American shad maintained exclusively in artificial freshwater culture system were reported in this study. Size of cultured population in this experiment was similar to that of the wild population from the coastal North Carolina, and somewhat higher than that of the wild population from the Delaware River near Lambertville, USA. Two-year-old broodfish spawned naturally in ponds, or were induced to spawn with injections of Ovaprim. Mean fertilization, hatching and seventeen day survival rates of larvae were about 15%, 75% and 54% respectively. These results indicate American shad can be successfully established in artificial freshwater culture system when its favorable living environments are provided. Based on these results and other biological characteristics, it can be concluded that American shad may become a potential invader to the aquatic ecosystem in China when escaping from farms [ Acta Zoologica Sinica 53 (4) : 625 - 629, 2007].
Jia Yan-Ju; Chen Yi-Feng (email@example.com) ; Goudie, Cheryl A.; Simco, Bill A.; Liu Qing-Hua.Potential invasion risk of the introduced American shad Alosa sapidissima to aquatic ecosystem in China,Acta Zoologica Sinica,2007,53(4):625-629