Population density and reproductive efficiency.
D000311:Adrenal Glands / Q000033:anatomy & histology / Q000502:physiology; D000324:Adrenocorticotropic Hormone / Q000378:metabolism; D000818:Animals; D001522:Behavior, Animal; D001723:Birth Rate; D001835:Body Weight; D001947:Breeding; D003345:Corticosterone / Q000378:metabolism; D004971:Estrus; D005260:Female; D005523:Food Supply; D006854:Hydrocortisone / Q000378:metabolism; D008297:Male; D051379:Mice; D009929:Organ Size; D010902:Pituitary Gland / Q000502:physiology; D011156:Population Density; D011158:Population Growth; D011247:Pregnancy; D011817:Rabbits; D051381:Rats; D012098:Reproduction; D012377:Rodentia / Q000502:physiology; D012621:Seasons; D012726:Sexual Behavior, Animal; D013997:Time Factors
D000324:Adrenocorticotropic Hormone; D003345:Corticosterone; D006854:Hydrocortisone