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Circulating concentrations of testosterone and its precursor androstenedione, as well as dehydroepiandrosterone (DHEA) and the adrenal hormones cortisol and corticosterone were measured at monthly intervals in 14 male killer whales (Orcinus orca) aged 0.8–38 years. Analyses were performed for examination of the relationships of age, sexual maturation status (STATUS), season, and environmental temperature...
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