摘要
The Plesionika material,collected by the National Comprehensive Oceanography Survey from the East China Sea in 1959,has been found to contain three species:P.izumiae Omori,1971,P.marita orientalis Chace,1985,and P.ortmanni Doflein,1902.The ranges,population numbers,population density,and ratios of males,non-ovigerous females and ovigerous females of P.izumiae were found to vary seasonally.
基金
supported by the National Natural Science Foundation of China (Nos.30370186 and 30499340).
