Relation between gonadal hormones and sexual maturity of female Kutum Rutilus frisii kutum during spawning season

Journal of Cell and Molecular Research

Article 4, Volume 1, Issue 2, January 0, Pages 96-105   

DOI: 10.22067/jcmr.v1i2.1344

Authors

Saeed Shafiei Sabet^* ; Mohammad Reza Imanpoor; Bagher Aminian Fatideh

Gorgan University of Agricultural Sciences and Natural Resources

Abstract

Relation between sexual maturity and levels of two main steroid hormones in gonads, 17- estradiol (E2)
and testosterone (T) were studied by using histological and radioimmunoassay in female kutum Rutilus frisii
kutum during spawning season of the southern Caspian Sea. The study was carried out from February to May
2008 using 105 migrated fish specimens catched from the River sefid-rood by various tools of catching
including (Gillnet, Cast net, Seine net and Sheyl or Kulham). The results revealed that changes in plasma
levels of gonadal steroids, (E2) and (T) were closely correlated with ovarian development and increased in
Gonadosomatic index (GSI) (P

Keywords

kutum; Rutilus frisii kutum (Kamenskii, 1901); sex steroid hormones; spawning season; Caspian Sea