Antarctica
- Cervical air sac oxygen profiles in diving emperor penguins: parabronchial ventilation and the respiratory oxygen store
Summary: Air sac oxygen profiles of emperor penguins demonstrate that air flow between the air sacs and through the lungs maintains gas exchange during dives as well as on the surface.
- Rapid cold hardening protects against sublethal freezing injury in an Antarctic insect
Summary: Rapid cold hardening has a well-established role in preventing death from cold; present data show it also protects against non-lethal freezing injury in a freeze-tolerant Antarctic insect.
- Will the Antarctic tardigrade Acutuncus antarcticus be able to withstand environmental stresses related to global climate change?
Highlighted Article: Acutuncus antarcticus tolerates stressors as desiccation, temperature and ultraviolet radiation, although radiation negatively affects its life cycle. This tardigrade is able to adapt to changing environmental conditions.
- Juvenile Antarctic rockcod (Trematomus bernacchii) are physiologically robust to CO2-acidified seawater
Summary: Juvenile Antarctic emerald rockcod are robust to projected ocean acidification scenarios and may have the capacity to adjust for future increases in PCO2 by increasing acid-base compensation through increased ventilation.
- Elevated temperature causes metabolic trade-offs at the whole-organism level in the Antarctic fish Trematomus bernacchii
Summary: High-Antarctic fish exposed to a temperature increase of 2°C show an 84% reduction in growth, in contrast to a complete temperature compensation of routine metabolism.