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E-Mail IMAGE: Two year study finds Artificial Light at Night (ALAN) is causing young clownfish to grow less and die faster. view more Credit: Frederic Zuberer Young clownfish living closest to shore are dying faster than those further offshore because they are being exposed to artificial lighting, says an international research team. Working on the reefs around Moorea in French Polynesia, scientists from France, the United Kingdom, Chile and Australia found that nearshore juvenile clownfish living in anemones under lights had higher mortality than juveniles in anemones not exposed to artificial light. The scientists also found that the surviving clownfish grew 44 per cent more slowly than clownfish under natural lighting conditions. ....
Climate change damage to the homes of clown fish can have a negative impact on their physiology, according to new research. Scientists studied what happens to clown fish, known from the film Finding Nemo, living in bleached coral reefs. Mass coral bleaching is the result of extreme heatwaves caused by worldwide climate change. The study found that the fish, also known as anemone fish, living in bleached anemones for longer than a month progressively decreased their metabolism, had less growth and modified their behaviour to become less active. The research was led by an international team of scientists from the University of Glasgow and researchers from France, Chile and Denmark, and was carried out at Criobe (Centre for Island Research and Environmental Observatory) in French Polynesia. ....
Issued: Tue, 12 Jan 2021 05:00:00 GMT The metabolism of clownfish – or anemonefish – decreases when their sea ‘homes’ are damaged by climate change, according to a new study. The research – led by an international team of scientists from the University of Glasgow and CRIOBE, and published today in Functional Ecology – found that exposure to bleached coral reefs can have a negative effect on the physiology and growth of anemonefish. The study found that anemonefish living in bleached anemones for longer than a month progressively decreased their metabolism, had less growth and modified their behavior to become less active. Mass coral bleaching is the result of extreme heat waves caused by worldwide climate change. On tropical reefs, anemones are home to anemonefishes. When anemones bleach, they don’t just lose their color, but also the algae that live in their tissues that provide energy to anemones and also anemonefishes. ....