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Susceptibility of Antarctic krill (Euphausia superba Dana) to ultraviolet radiation
journal contributionposted on 2023-05-16, 11:42 authored by Newman, SJ, Nicol, S, Ritz, DA, Marchant, H
We irradiated captive juvenile Euphausia superba in the laboratory with lower than spring surface levels of ultraviolet-B, ultraviolet-A and photosynthetically active radiation, in order to examine their response in terms of mortality and generalised activity. Levels of photosynthetically active radiation 3-5 times below surface irradiance caused krill to die within a week, while animals in the dark survived. Addition of ultraviolet-B typical of depths up to 15 m were found to significantly accelerate mortality and lead to a drop in activity in all experiments. A drop in activity in krill exposed to ultraviolet-A wavelengths was evident without an increase in mortality. The protein content of animals from various treatments was found not to vary.
Publication titlePolar Biology
Department/SchoolInstitute for Marine and Antarctic Studies
Place of publicationBerlin, Germany