Seasonal reproductive cycle and variability in plasma testosterone levels in the domestic duck (Anas platyrhynchos) . Bioscience Journal [online], 2017. [online], vol. 33, no. 1, pp. 153–164. [Accessed9 April 2025]. DOI 10.14393/BJ-v33n1a2017-34113. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/34113.