Plasma prolactin during the breeding season in adult and immature macaroni (Eudyptes chrysolophus) and gentoo (Pygoscelis papua) penguins
| Autor: | T.D. Williams, P.J. Sharp |
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| Rok vydání: | 1993 |
| Předmět: |
Male
medicine.medical_specialty Zoology Breeding Birds Endocrinology Species Specificity Internal medicine medicine Seasonal breeder Animals Sexual Maturation Incubation Eudyptes chrysolophus biology biology.organism_classification Prolactin Breed Altricial Brood patch Animal Science and Zoology Female Seasons Pygoscelis papua |
| Zdroj: | General and comparative endocrinology. 92(3) |
| ISSN: | 0016-6480 |
| Popis: | Plasma prolactin levels were measured in free-living breeding adult and immature (prebreeding) macaroni (Eudyptes chrysolophus) and gentoo (Pygoscelis papua) penguins at Bird Island, South Georgia (54°S, 38°W). Macaroni and gentoo penguins first breed at 5-6 and 2 years of age, respectively. In adult birds, of both species, prolactin was low ( |
| Databáze: | OpenAIRE |
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