CORRELATION BETWEEN THE STRUCTURE OF BRAINS AND FEEDING HABITS OF THE SCHIZOTHORACINAE FISH IN THE MAQU FISHING GROUND

This paper deals with the analysis of feeding hadits and obeservationon the structure in brains of P. extremrs, S. pylzovi, G. eckloni and G. pachycheilus. The correlation between brain structure and feeding habits was discussed. These fourfish belong to bottom feeders with the aid of taste sense. P. extremus and S pylzovifeed on mud and algae mainly with the aid of taste buds in pharynx. The vagal lobesof their brains developed very prominently. G. pachyeilus uses mainly its barbels tosort out aquatic insects, especially crustacean. Its facial lobe and cerabellum of the.brain are largu. The brain of G. ecklcni fits to ils omnivorous feedind habits.