Twenty-First-Century Environmental Change Decreases Habitat Overlap of Antarctic Toothfish (Dissostichus mawsoni) and Its Prey.

ABSTRACT: Antarctic toothfish are a commercially exploited upper-level predator in the Southern Ocean. As many of its prey, the ectothermic, water-breathing Antarctic toothfish is specifically adapted to the temperature and oxygen conditions present in the high-latitude Southern Ocean. Additionally, the life cycle of Antarctic toothfish depends on sea-ice dynamics and the transport of individuals by currents between regions with different prey. To assess the impact of 21st-century climate change on potential interactions of Antarctic toothfish and its prey, we here employ the extended aerobic growth index (AGI), which quantifies the effect of ocean temperature and oxygen levels on the habitat viability of individual species. We quantify changes in predator-prey interactions by a change in viable hab

SUBMITTER: Nissen C 

PROVIDER: S-EPMC11811694 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature