Knowledge of baleen whales' reproductive physiology is limited and requires long-term
individual-based studies and innovative tools. We used 6 years of individual-level data on …

Fecal samples are a non-invasive and relatively accessible matrix for investigating
physiological processes in resident killer whale (Orcinus orca) populations. The high lipid …

Hormone monitoring of at-risk species can be valuable for evaluation of individual
physiological status. Traditional non-invasive endocrine monitoring from urine and faeces …

Male mammals of seasonally reproducing species typically have annual testosterone (T)
cycles, with T usually peaking during the breeding season, but occurrence of such cycles in …

Individual-level assessments of wild animal health, vital rates, and foraging ecology are
critical for understanding population-wide impacts of exposure to stressors. Large whales …

Simple Summary Our society is increasingly concerned about the well-being of animals like
dolphins, which can be affected by life under professional human care or by anthropogenic …

Endocrine tools can provide an avenue to better understand mammalian life histories and
predict how individuals and populations may respond to environmental stressors; however …

Elk (Cervus canadensis) were reintroduced to Tennessee, USA in the early 2000s, with
limited reproductive monitoring since initial release. We assessed the efficacy of …

The present study presents a new technique for measuring steroid hormones in shark skin.
Results reveal for the first time that shark skin contains measurable levels of testosterone …

Monitoring the physiology of small aquatic and marine teleost fish presents challenges.
Blood samples, often the first choice for endocrinologists, can be difficult or even impossible …