Control of sex inversion in female Atlantic salmon (Salmo salar) ...

• Main Author: Lee, PS
• Format: Thesis
• Language: unknown
• Published: University Of Tasmania 2023
• Subjects: Atlantic salmon; Salmo salar
• Online Access: https://dx.doi.org/10.25959/23231477; https://figshare.utas.edu.au/articles/thesis/Control_of_sex_inversion_in_female_Atlantic_salmon_Salmo_salar_/23231477

Commercial production of Atlantic salmon, Salmo solar (L.), in Tasmania is becoming increasingly reliant on female stocks for year round production. Hatchery production of female monosex stocks uses milt from sex inverted females (\neomales\") to produce all female offspring. This study was undertaken investigate the effects of aromatase inhibitors (Al) on Atlantic salmon and to facilitate the development of techniques for their commercial application. Dietary treatment for 800 ¬¨‚àûC days from first feeding with methyltestosterone at doses of 1 or 3 mg kg\\(^{-1}\\) food or methyldihydrotestosterone (MDHT) at 1 mg kg\\(^{-1}\\) food resulted in 100% masculinisation of female Atlantic salmon. Masculinisation followed 2 h immersion of alevins in MDHT at 400 ˜í¬¿g\\(^{-1}\\) during the period 0 to 28 days post median hatch (DPMH) and complete masculinisation was achieved after immersion at 14 and 21 or 14 and 28 DPMH. More sex inverted males with patent sperm ducts were produced by immersion than dietary ...