Reproductive endocrinology of macaroni (Eudyptes chrysolophus) and gentoo (Pygoscelis papua) penguins: II. Plasma levels of gonadal steroids and LH in immature birds in relation to deferred sexual maturity

• Published in: General and Comparative Endocrinology
• Main Author: Williams, T.D.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Elsevier 1992
• Subjects: Bird Island; Eudyptes chrysolophus; Pygoscelis papua
• Online Access: http://nora.nerc.ac.uk/id/eprint/519108/; https://doi.org/10.1016/0016-6480(92)90007-7

Plasma levels of LH, testosterone, estradiol, and progesterone were measured, during the breeding season, in adult and immature macaroni (Eudyptes chrysolophus) and gentoo (Pygoscelis papua) penguins, at Bird Island, South Georgia (54°S, 38°W), in relation to deferred sexual maturity. Macaroni pengu...