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Differential thermal tolerances in geographically distinct lineages of a dominant reef building algaNARA Subscribed
How organisms respond to increasing temperatures could be attributed to existing thermal tolerances or that certain populations are living well below their thermal limits. To address these ideas, we exposed geographically distinct (1144–2332 km apart) lineages of the dominant reef-building crustose coralline alga, Porolithon cf. onkodes , from the Australian Great Barrier Reef and Lord Howe Island to an increasing temperature...
The mixotrophic toxic dinoflagellate Karenia brevis forms red tides almost annually along Florida's Gulf coast. We hypothesize that the nutritional status and abundance of its prey, the picocyanobacterium Synechococcus , will affect its feeding rates and growth responses, with implications for bloom dynamics. This study investigated how prey nutritional quality and quantity (absolute and relative) impact grazing rates by K. br...
High Quality Diet Enhances Immune Response and Affects Gene Expression During Viral Infection in an Insect HerbivoreNARA Subscribed
Herbivorous insects tolerate chemical and metabolic variation in their host plant diet by modulating physiological traits. Insect immune response is one such trait that plays a crucial role in maintaining fitness but can be heavily influenced by variation in host plant quality. An important question is how the use of different host plants affects the ability of herbivorous insects to resist viral pathogens. Furthermore, the tr...
The East Antarctic krill fisheries are spread across two Divisions of the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), Division 58.4.1 between 80-150°E and Division 58.4.2 between 30-80°E. Each of these Divisions is further divided into East and West subregions with separate catch limits. In 2019, CCAMLR agreed to a revised krill fishery management strategy recommended by the Scientific Commit...
Antarctic krill ( Euphausia superba ) aggregations are important in the Southern Ocean ecosystem; however, the amount of energy that krill swarms contain is unknown. We assessed the population structure of E. superba swarms in East Antarctica for two different sectors corresponding to the study areas of the ENRICH (2019) and TEMPO (2021) voyages. We also estimated swarm energy content based on calorific values for whole animal...
Understanding and managing the response of marine ecosystems to human pressures including climate change requires reliable large-scale and multi-decadal information on the state of key populations. These populations include the pelagic animals that support ecosystem services including carbon export and fisheries. The use of research vessels to collect information using scientific nets and acoustics is being replaced with techn...