The Marine Mammal Physiology Project is currently assisting in the following studies:

Physiology as a conservation tool for large marine predators (Tursiops truncatus, Delphinapterus leucas)

In this study, the animals are trained to voluntarily participate in multiple underwater swims for the purpose of dive recovery analysis with respect to ventilation, respiration, vasculature, and blood chemistries. By creating a dive recovery timeline, we can compare how metabolic gasses differ at various dive intervals. Specifically, the relationship between CO2 and  O2 can be compared within these intervals. This research can be used to give insights into the diving habits of wild Atlantic bottlenose dolphins and beluga whales, as this is a project in collaboration with other facilities currently housing beluga whales.

Responses of Arctic animals to warming ocean temperatures 

Increased sea surface temperatures changes in our oceans, along with a decrease in sea ice in the Arctic, creates challenges for the Apex predators living in those regions. This research project aims to use Atlantic bottlenose dolphins to study where and how excess heat is lost to the environment and how this changes with increased activity. We can then compare these data with those of other Arctic cetaceans, namely narwhals, bowhead whales, and belugas, to infer how Arctic species will be impacted with the increased temperatures that they will be exposed to in coming decades. Metrics of heat regulation are measured with FLIR cameras, heat flow probes, and suction cup tags.

Thermal neutral zone of Hawaiian monk seals (Neomonachus schauinslandi) across age classes

Rising ocean temperatures may impact Hawaiian monk seals by forcing them to move into colder waters to find food items. For this study, we are interested in knowing if these colder waters would be habitable for this species. Using a temperature controlled tub, we perform voluntary metabolic measurements from 0-25 degrees Celsius. The subjects of this data collection vary in age, allowing us to determine caloric needs and thermal tolerance across age classes. We also have the unique opportunity to collect data from the same individual at different ages that allow us to limit data artifacts that can come from using multiple individuals.

Comparative resting heart rate in pinnipeds

In collaboration with the Reichmuth lab, this study compiles and compares resting heart rate of various pinnipeds. Our contribution to the project focuses on the resting heart rate of Hawaiian monk seals (Neomonachus schauinslandi). This project utilizes a heart rate plate and video recording to compare tachycardia and bradycardia responses. This is integral for determining adaptability to stressors.