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Marma-detox

Whales and polar bear in a petri dish: decoding marine mammal toxicology through in vitro and in silico approaches

Image showing an Orca whale ascending towards the sea surface lit by sunlight spreading from a narrow point above
Photo:
Arctic coast photography - Audun Rikardsen

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Large marine mammals play an important role in marine ecosystems as top predators. Unfortunately, their high energy intake also means they accumulate high levels of contaminants that can affect their health and act as indicators of environmental pollution. Orcas are the most contaminated marine mammal species due to their position as top predators, while baleen whales have lower levels of pollutants since they are filter feeders. These contaminants can disrupt animal physiology, growth, and reproduction, as well as immune function and overall health.

To better understand how these contaminants affect marine mammals, researchers have been working on developing new methods to study them. By using in vitro and in silico methods, they can study the effects of environmental contaminants on key molecular targets in animals like orcas, fin whales, and polar bears. Additionally, they can establish fibroblast cell cultures from skin-blubber biopsies that can be used to study toxicological responses in these animals. This research is crucial in helping us monitor and mitigate the impact of pollutants on marine mammals and the wider environment.