| From April in 1989 to May in 1990, specimens of Coilia nasus were collected in Chongming County, Shanghai City and Wuxi County, Jiangsu Province; specimens of C. mystus and C. grayii were collected in Haideng Town, Fujian Province; C. brachygnathus (not fresh) were collected in Gaochun County, Jiangsu Province. The electrophoretic pattern characteristics of LDH isozymes, ES isozymes and myogens of three species (five ecological patterns) of Coilia fishes were studied. Their relationships are discussed internal and external morphological characters are compared, and their interrelations are discussed. The results of the studies are as follows: The biochemistry of the four species (six ecological patterns) of Coilia fishes shows they are identical with species in the old classification.
Comparison of biochemical and morphological characters yielded a cladistic systematics diagram of four spcies (six ecological patterns) of Coilia fisher divided were sister groups, of C. nasus and C. brachygnathus, and of C. mystus and C. grayii.
Biochemical and morphological evidence showed that C. mystus in the Changjiang River and Jiulongjiang River are two subspecies, C. mystus mystus Linnaeus and C. mystus mystus Jiulong jiangensis subsp. nov., but C. nasus in the Changjiang River and in Taihu Lake may be of two ecological patterns. |
