Despite long evolutionary separations, several sharks and tunas share the ability to maintain
slow-twitch, aerobic red muscle (RM) warmer than ambient water. Proximate causes of RM …

Species distribution models (SDMs) are increasingly applied in conservation management
to predict suitable habitat for poorly known populations. High predictive performance of …

After the breeding season, penguins must replenish body condition and accumulate
sufficient energy stores before their annual moult ashore; failure to do so may lead to …

Aim Competition for food among populations of closely related species and conspecifics that
occur in both sympatry and parapatry can be reduced by interspecific and intraspecific …

Two main hypotheses have been debated about the biogeography of the Southern
Ocean:(1) the Antarctic Polar Front (APF), acting as a barrier between Antarctic and sub …

Everyone uses species. All human cultures, whether using science or not, name species.
Species are the basic units for science, from ecosystems to model organisms. Yet, there are …

Mechanisms promoting coexistence between closely related species are fundamental for
maintaining species diversity. Mechanisms of niche differentiation include allochrony which …

Aim Species that breed sympatrically often occupy different foraging niches to mitigate
competition for prey. When resource availability declines at the end of the breeding season …

Seabirds breeding on the Antarctic continent must cope with extreme changes in sea ice
cover and day length throughout the year. Adélie penguins are expected to adjust their …

Magellanic penguins Spheniscus magellanicus are upper trophic level predators and play a
key role within their marine ecosystems. However, we lack detailed understanding of their …