Gonadal steroids and energy availability during ovarian maturation stages of the Amazonian pirarucu Arapaima gigas (Teleostei: Osteoglossidae) in the wild - Amaral, Juliane S; Venturieri, Rossana Leite; Moreira, Renata Guimarães (Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2019)