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dc.contributor.authorMalekzadeh Viayeh, R.
dc.contributor.authorHallajian, A.
dc.contributor.authorKazemi, R.
dc.contributor.authorBahmani, M.
dc.contributor.authorHoushmand, A.
dc.coverage.spatialIranen_US
dc.date.accessioned2018-05-13T13:53:19Z
dc.date.available2018-05-13T13:53:19Z
dc.date.issued2006
dc.identifier.issn1026-1354
dc.identifier.urihttp://hdl.handle.net/1834/12861
dc.description.abstractLevels of two main steroid hormones in gonads, 17-B Estradiol (E2) and testosterone (T) were compared in males and females of Persian sturgeon at the start of autumnal migration to spawning rivers. Hormone levels were also studied for likely relationship with different stages of sexual maturity. The results showed that levels of T and E2 in females at the stage four of sexual maturity is significantly higher than the individuals with immature gonads (ovary in stages 2 and 3). We measured 11.81±2.860ng/ml and 7±1.15ng/ml of T and E2 in mature females compared to 0.2±0.09ng/ml and 0.736±0.161 ng/ml of T and E2 in immature females. Levels of the two hormones in males at different stages of sexual maturity showed that only testosterone was significantly different in mature and immature sturgeons (0.50±0.144 ng/ml and 14.3125±3.121ng/ml in mature and immature males. respectively) (P=0.04). In males and females with higher sexual maturity, differences between the two hormones were significant (T and E2 levels in females and males were 11.81±2.860ng/ml, 7±1.15ng/ml and 0.50±0.144ng/ml, 0.7023±0/212ng/ml, respectively). However, in immature fish of both sexes, only males showed significantly higher T levels (14.3125±3.121ng/ml in comparison with 0.2±0.09ng/ml). Disregarding the sexual maturity stages, we found significantly different levels of E2 in both sexes (4.779±1.827ng/ml in females and 0.709±0.121 ng/ml in males) (P=0.00). Statistical analyses indicated no correlation between fish age and levels of steroid hormones of the fish (at 90% confidence level).en_US
dc.language.isofaen_US
dc.relation.urihttp://isfj.areo.ir/en_US
dc.titleComparing sex hormones levels in Acipenser persicus at the onset of Autumnal migrationen_US
dc.typeJournal Contributionen_US
dc.bibliographicCitation.issue1en_US
dc.bibliographicCitation.titleIranian Scientific Fisheries Journalen_US
dc.bibliographicCitation.volume15en_US
dc.description.statusPublisheden_US
dc.format.pagerangepp.151-162en_US
dc.subject.asfaSexen_US
dc.subject.asfaHormonesen_US
dc.subject.asfaMigrationen_US
dc.subject.asfaPersian sturgeonen_US
dc.subject.asfaAcipenser persicusen_US
dc.subject.asfaSexual maturityen_US
dc.subject.asfaEstradiolen_US
dc.subject.asfaTestosteroneen_US
dc.subject.asfaE2en_US
dc.subject.asfaSpawningen_US
dc.subject.asfaFemalesen_US
dc.subject.asfaMalesen_US
dc.type.refereedRefereeden_US
refterms.dateFOA2021-01-30T18:48:20Z


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