The Effect of Dietary Supplementation of 17α -Methyltestosterone and 17β-Estradiol Hormones on Growth, Sex Conversion and Reproduction in Electric Yellow Cichlid (Labidochromis caeruleus)

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dc.authoridAral, Orhan/0000-0001-8550-9970
dc.authoridOz, Unal/0000-0003-1918-3284
dc.contributor.authorKarsli, Zafer
dc.contributor.authorSahin, Dilek
dc.contributor.authoroz, Meryem
dc.contributor.authoroz, Unal
dc.contributor.authorAral, Orhan
dc.date.accessioned2025-03-23T19:27:40Z
dc.date.available2025-03-23T19:27:40Z
dc.date.issued2022
dc.departmentSinop Üniversitesi
dc.description.abstractIn this study, effects of dietary supplementation of two different hormones on growth, sex conversion and reproduction of electric yellow cichlid, Labidochromis caeruleus were investigated. Moreover, possible negative (sterilization, mortality, reproduction performance etc.) and positive (growth, sex conversation etc.) impacts of hormone administration were also assessed. This study had two experiments. In the first experiment, six experimental feeds were prepared by adding two different hormones (17 alpha-Methyltestosterone (Mt), 17 beta-Estradiol (Es) at three different doses (20, 40, 60 mg kg-1) and control feed was without hormone. All six experiment groups receiving experimental diets and control were conducted in 3 replicates in 21 aquariums for 3 months in the first experiment. L. caeruleus were fed orally with these hormone-supplemented feeds and growth parameters, sex conversion and survival rate were examined. In the second experiment, fish from the first experiment were fed with commercial cichlid feed containing no hormones and numbers of fry produced was recorded. At the end of 90-day feeding period in the first experiment, the best growth was obtained in 60 mg kg-1 Mt treated group (1.97 +/- 0.17 g). Sex conversion to all male population (100% male) was observed in 17 alpha-Mt treated groups, while, conversion to 82.22, 86.67 and 86.67% females was observed in 17 beta-Es treated (20, 40 and 60 mg kg-1) groups, respectively. In the second experiment, after feeding the fish with a commercial feed for 3 months, fish fry was released from fish mouth and numbers of fry were counted. The present findings revealed that 17 alpha-Mt hormone was more effective in growth and sex conversion, while the survival rate and number of fry produced were negatively affected by the increased dose of both hormones.
dc.description.sponsorship[MYO 1901-16-22]
dc.description.sponsorshipThe authors are grateful to Sinop University Scientific Research Projects Coordinatorship for providing all facilities for this research (Project No. MYO 1901-16-22) .
dc.identifier.doi10.17582/journal.pjz/20210105110138
dc.identifier.endpage218
dc.identifier.issn0030-9923
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85121692333
dc.identifier.scopusqualityQ4
dc.identifier.startpage213
dc.identifier.urihttps://doi.org/10.17582/journal.pjz/20210105110138
dc.identifier.urihttps://hdl.handle.net/11486/4962
dc.identifier.volume54
dc.identifier.wosWOS:000728459500001
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherZoological Soc Pakistan
dc.relation.ispartofPakistan Journal of Zoology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250323
dc.subjectKey words Development
dc.subjectElectric yellow cichlid
dc.subjectHormone treatment
dc.subjectReproductive performance
dc.subjectSex conversion
dc.titleThe Effect of Dietary Supplementation of 17α -Methyltestosterone and 17β-Estradiol Hormones on Growth, Sex Conversion and Reproduction in Electric Yellow Cichlid (Labidochromis caeruleus)
dc.typeArticle

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