Associations between plasma testosterone levels and season, nutritional status, age, and body size in free-ranging male Asian black bears (Ursus thibetanus) in central Honshu, Japan
Jumpei Tomiyasu, Mitsunori Kayano, Ken Hazano, Motozumi Matsui, Yui Nemoto, Tomoko Naganuma, Shinsuke Koike, Koji Yamazaki
Topics & Concepts
Testosterone (patch)BiologySeasonal breederReproductionUrsusInternal medicineEndocrinologyZoologyEcologyDemographyPopulationMedicineSociologyWildlife Ecology and ConservationAnimal Behavior and ReproductionHormonal and reproductive studies