Regulation of Oxygen Consumption and Body Temperature during Torpor in a Hummingbird, Eulampis jugularis

1970/04/17 by F. Reed Hainsworth, Larry L. Wolf · 2 citations
Environmental Science · Agricultural and Biological Sciences · Chemistry · #Physiological and biochemical adaptations #Bat Biology and Ecology Studies #Avian ecology and behavior #Torpor #Hummingbird #Oxygen #Homeothermy #Chemistry #Atmospheric temperature range #Thermoregulation #Animal science #Biology #Ecology #Physics #Thermodynamics

paper · doi:10.1126/science.168.3929.368

openalex publication_date 1970/04/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/23

Abstract

The West Indian hummingbird, Eulampis jugularis, maintained its body temperature in torpor at 18 degrees to 20 degrees C over an ambient temperature range of 2.5 degrees to 18 degrees C. At ambient below 18 degrees C oxygen consumption during torpor increased linearly with decreasing temperature. Thermal conductances were the same for resting and torpid Eulampis regulating their body temperatures at 40 degrees and 18 degrees C, respectively.

Citations

• Torpidity in the White-Throated Swift, Anna Hummingbird, and Poor-Will

Cited by

• Hummingbird torpor in context: duration, more than temperature, is the key to nighttime energy savings
• Hummingbird [wikipedia]