SCALE STRUCTURE OF CHUB (Leuciscus cephalus L.) FROM HEATED KONIŃSKIE LAKES

Abstract

Development and structure of scales of chub from heated Konińskie lakes were studied. First sclerites form on the lateral-oral end of the scales at body length of fry 15-20 mm. Along with scale growth, sclerite arrangement at the caual end of the scales became blurred, while at the oral end – condensed. Annual ring appeared in May. Radius length to sclerite number ratios were similar and did not differ among the lakes.