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Full-Text Articles in Organisms
Influences Of Post-Fledging Protein Supplementation On Growth And Reactive Stress Response In Zebra Finches (Taeniopygia Castanotis), Gabrielle Morris, Mary Lindley Tharp
Influences Of Post-Fledging Protein Supplementation On Growth And Reactive Stress Response In Zebra Finches (Taeniopygia Castanotis), Gabrielle Morris, Mary Lindley Tharp
Honors Theses
Protein needs of non-poultry birds, like Zebra Finches (ZF) are understudied. ZFs consume proteinaceous half-ripe seeds during breeding and chicken eggs are recommended supplements for captive ZFs; but developmental needs are unclear. Eggs contain essential amino acids that impact the “stress” hormone, corticosterone (CORT). Diet and corticosterone influence avian growth and stress management. Juvenile egg-fed ZFs outgrow seed-fed birds. Juvenile egg-supplementation boosts adult male attractiveness due to cheek patch augmentation compared to seed-only birds. Across studies, timing of diet (nestling Vs. fledgling) varies, both sexes have not been included, and simultaneous measures of growth and corticosterone are lacking. We are …
No Difference In Corticosterone Concentrations Between Missouri Three-Toed Box Turtles Living In An Urban And A Rural Site, Bennett A. Lamczyk, Jamie L. Palmer, Corinne P. Kozlowski, Stephen Blake, Sharon L. Deem
No Difference In Corticosterone Concentrations Between Missouri Three-Toed Box Turtles Living In An Urban And A Rural Site, Bennett A. Lamczyk, Jamie L. Palmer, Corinne P. Kozlowski, Stephen Blake, Sharon L. Deem
Human–Wildlife Interactions
Baseline health data for species of conservation concern are important for understanding threats to the long-term viability of populations. One indication of health is physiological stress among individuals. Corticosterone (CORT) is frequently used to quantify stress in free-living reptile populations, as high values may be associated with reduced fitness. Herein, we describe and validate methods for quantifying blood CORT levels in three-toed box turtles (Terrapene mexicana triunguis). We subsequently use this information to evaluate stress levels in 2 populations of free-living three-toed box turtles in Missouri, USA. To our knowledge, this is the first quantification of CORT levels …
Immune-Endocrine Links To Gregariousness In Wild House Mice, Patricia C. Lopes, Esther H. D. Carlitz, Morgan Kindel, Barbara König
Immune-Endocrine Links To Gregariousness In Wild House Mice, Patricia C. Lopes, Esther H. D. Carlitz, Morgan Kindel, Barbara König
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Social interactions are critically important for survival and impact overall-health, but also impose costs on animals, such as exposure to contagious agents. The immune system can play a critical role in modulating social behavior when animals are sick, as has been demonstrated within the context of “sickness behaviors.” Can immune molecules affect or be affected by social interactions even when animals are not sick, therefore serving a role in mediating pathogen exposure? We tested whether markers of immune function in both the blood and the brain are associated with gregariousness, quantified as number of animals interacted with per day. To …