REPRODUCTIVE BIOLOGY AND HISTOLOGICAL CHANGES IN THE GONADS OF BARB, Capoeta trutta (HECKEL, 1843) IN ATATÜRK DAM LAKE, TURKEY

Abstract

In this study, it was aimed at investigating the reproductive biology and histologically determining the developmental stages of oocytes of Capoeta trutta (Heckel, 1843) in Atatürk Dam Reservoir. Te sex ratio was calculated as 1: 1.03 F/M (total n=422). It was determined that the mean length of the specimens considered sexually mature for both sexes was 200 mm. The gonado-somatic index (GSI) values peaked in May. The gonads obtained from males and females presented three and six development stages, respectively. The egg diameters were between 0.42 and 1.69 mm. The results indicated that the spawning activity observed in males and females, at 3 years of age or more, seems to be in May and June. The microscopic appearance of the gonads shows similar characteristics to other teleost species.

Keywords

• capoeta trutta
• gonadosomatic index
• fecundity
• gonad histology
• atatürk dam lake
• capoeta trutta
• gonadosomatik indeks
• fekundite
• gonad histolojisi
• atatürk baraj gölü