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

Document Type : مقاله

Authors

Saeed Shafiei Sabet

Mohammad Reza Imanpoor

Bagher Aminian Fatideh

Gorgan University of Agricultural Sciences and Natural Resources

https://doi.org/10.22067/jcmr.v1i2.1344

Abstract

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

20.1001.1.20089147.2009.1.2.7.8

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