ORIGIN AND EVOLUTION OF SOME BIOLOGICAL CHARACTERS OF Anabarilius grahami AS REFERRED TO GEOLOGICAL DEVELOPMENT OF FUXIAN LAKE
Yang Junxing (Kunming Institute of Zoology, Academia Sinica 650107)
Based on data collected in Fuxian Lake from November, 1988 to March, 1991, the habits in living spaces, feeding and breeding of Anabarilius grahami (Regan) have been described. From the view of organic evolution and geological development of the lake, the origin and evolution of these biological characters have been further discussed. The biological characters of A. grahami are closely correlated to its origination.It shares a most recent common ancestor with A. andersoni and A, qiluensis (Yang et al., 1987). Their common ancestor would be a stream-lived and omnivorous fish because the primitive extant species of Anabarilius are all stream-dwellers.