Biological Sampling & Physiological Measurement

A novel approach for contactless heart rate monitoring from pet facial videos

Introduction: Monitoring the heart rate (HR) of pets is challenging when contact with a conscious pet is inconvenient, difficult, injurious, distressing, or dangerous for veterinarians or pet owners. However, few established, simple, and non-invasive techniques for HR measurement in pets...

Year Published: 2024Topics: Biological Sampling & Physiological MeasurementAnimal Type: Cat, Dog

Citation: Hu, R., Gao, Y., Peng, G. et al. 2024. A novel approach for contactless heart rate monitoring from pet facial videos. Frontiers in Veterinary Science 11.

Novel method to investigate thermal exchange rates in small, terrestrial ectotherms: A proof-of-concept on the gecko Tarentola mauritanica

Thermoregulating ectotherms may resort to different external heat sources to modulate their body temperature through an array of behavioural and physiological adaptations which modulate heat exchange with the environment and its distribution across the animal's body. Even small-bodied animals are...

Year Published: 2024Topics: Biological Sampling & Physiological MeasurementAnimal Type: Lizard, Reptile

Citation: Mochales-Riaño, G., Barroso, F. M., Marques, V. et al. 2024. Novel method to investigate thermal exchange rates in small, terrestrial ectotherms: A proof-of-concept on the gecko Tarentola mauritanica. PLOS ONE 19(12), e0316283.

Use of the oxygen reserve index/FiO2 as a non-invasive index to estimate venous admixture in anesthetized dogs

The oxygen reserve index (ORi) is a novel, non-invasive parameter that estimates arterial oxygen partial pressure (PaO2) during hyperoxia when the fraction of inspired oxygen (FiO2) is elevated. This study aimed to assess the utility of the ORi/FiO2 ratio as...

Year Published: 2025Topics: Anesthesia & Sedation, Biological Sampling & Physiological MeasurementAnimal Type: Dog

Citation: Bellini, L., Maney, J. K., Zanusso, F. et al. 2025. Use of the oxygen reserve index/FiO2 as a non-invasive index to estimate venous admixture in anesthetized dogs. Frontiers in Veterinary Science 11.

Effects of handling and surgical implant on juvenile wild trout: Physiological and behavioral impact

Fish involved in telemetry studies are usually handled, anaesthetized, and subjected to internal tag implantation, all of which have the potential to disrupt the fish's physiology, migratory patterns, food-seeking behavior, growth, and survival. As fish tagging is a widespread standard...

Year Published: 2024Topics: Biological Sampling & Physiological Measurement, HandlingAnimal Type: Fish, Trout

Citation: Makaras, T., Stankevičiūtė, M. 2024. Effects of handling and surgical implant on juvenile wild trout: Physiological and behavioral impact. Journal of Fish Biology 105(1), 265–278.

First noncontact millimeter-wave radar measurement of heart rate in great apes: Validation in chimpanzees (Pan troglodytes)

Heart rate is a crucial vital sign and a valuable indicator for assessing the physical and psychological condition of a target animal. Heart rate contributes to (1) fundamental information for cognitive research, (2) an indicator of psychological and physical stress,...

Year Published: 2024Topics: Biological Sampling & Physiological MeasurementAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Matsumoto, T., Iwata, I., Sakamoto, T. et al. 2024. First noncontact millimeter-wave radar measurement of heart rate in great apes: Validation in chimpanzees (Pan troglodytes). American Journal of Primatology 86(8), e23633.

Outdoor noncontact respiratory measurements of unrestricted rhesus macaques (Macaca mulatta) using millimeter-wave radar

Respiration is an invaluable signal that facilitates the real-time observation of physiological dynamics. In recent years, the advancement of noncontact measurement technology has gained momentum in capturing physiological activities in natural settings. This technology is anticipated to be found not...

Year Published: 2024Topics: Biological Sampling & Physiological MeasurementAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Minami, T., Sanematsu, D., Iwata, I. et al. 2024. Outdoor noncontact respiratory measurements of unrestricted rhesus macaques (Macaca mulatta) using millimeter-wave radar. American Journal of Primatology 86(9), e23661.

Potential of nail cortisol for welfare assessment in shelter and owned cats

Shelter cats often experience considerable stressors, such as confinement and unfamiliar surroundings, leading to welfare challenges. Evaluating and enhancing their well-being is crucial, and measuring cortisol levels in cats' nails offers a minimally invasive method for assessing stress and welfare....

Year Published: 2024Topics: Biological Sampling & Physiological MeasurementAnimal Type: Cat

Citation: Minh, P. Q. A., Nampimoon, T., Sirirut, S. et al. 2024. Potential of nail cortisol for welfare assessment in shelter and owned cats. Applied Animal Behaviour Science 280, 106422.

Refining urine collection in mice: Development of an innovative urine collection device

Urine collection can be challenging in studies involving small rodents like mice, as the actual methods of collection are anxiogenic and constrain animal welfare while having high variability in the volume of urine collected. To improve the current methods and...

Year Published: 2024Topics: Biological Sampling & Physiological MeasurementAnimal Type: Mouse, Rodent

Citation: Douté, M., Monzali, C., Nicoletti, A. et al. 2024. Refining urine collection in mice: Development of an innovative urine collection device. Laboratory Animals 58(6), 612–615.

Non-invasive blood pressure measurement in conscious rabbits: A comparison of Doppler ultrasonic and oscillometric devices

Background: This study aimed to compare Doppler (the most commonly used technique for non-invasive indirect blood pressure [NIBP] measurement in rabbits) and oscillometric devices for NIBP measurements in conscious rabbits. Methods: Blood pressure (BP) measurements were obtained for 49 conscious...

Year Published: 2024Topics: Biological Sampling & Physiological MeasurementAnimal Type: Rabbit

Citation: González-González, E., González-Alonso-Alegre, E., Montesinos-Barceló, A. et al. 2024. Non-invasive blood pressure measurement in conscious rabbits: A comparison of Doppler ultrasonic and oscillometric devices. Veterinary Record 195(7), e4399.

Measuring heart rate in captive chimpanzees without anesthesia

Heart rate measurements can be useful for the monitoring of both physical and mental condition in humans and nonhuman animals. Yet, information about heart rates in chimpanzees, who are phylogenetically the closest species to humans, is scarce. Existing data on...

Year Published: 2024Topics: Biological Sampling & Physiological MeasurementAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Hirata, S., Nogami, E., Udono, T. 2024. Measuring heart rate in captive chimpanzees without anesthesia. Primates 65(4), 217–222.