Jodie L. Rummer

TL;DR: Investigating the thermal range at which aerobic metabolic performance is optimum in equatorial populations of coral reef fish in northern Papua New Guinea indicates that low-latitude reef fish populations are living close to their thermal optima and may be more sensitive to ocean warming than higher-latitudes populations.

TL;DR: Research shows that reef fishes at natural volcanic CO2 seeps also exhibit behavioural abnormalities, and that behaviour does not acclimate with extended exposure to high CO2, suggesting fish communities are likely to face a serious threat from CO2-induced behavioural abnormalities in the future as ocean acidification becomes widespread.

TL;DR: Standard metabolic rate estimates in swimming respirometry were similar to those in resting respirometry when a three-parameter exponential or power function was used to extrapolate the swimming speed– relationship to zero swimming speed, and MMR estimates using the Ucrit protocol was higher than MMR derived from the 15 min chase protocol.

TL;DR: Using a flow-through high-pressure chamber, subadult red snapper were acclimated to 101.2, 405.3, 608.0, and 1,215.9 kPa, simulating depths typical of their distribution, and X-ray imaging in combination with necropsy showed that swim bladders expanded in a predictable manner.

TL;DR: It is reported that when rainbow trout are exposed to elevated water carbon dioxide, red muscle partial pressure of oxygen (PO2) increases by 65%—evidence that Root hemoglobins enhance general tissue O2 delivery during acidotic stress, and argues that CA activity in muscle capillaries short-circuits red blood cell (RBC) pH regulation.