Tsetse fly fertility damaged after just one heatwave, study finds

The fertility of both female and male tsetse flies is affected by a single burst of hot weather, researchers at the University of Bristol and Stellenbosch University in South Africa have found.

"Ultimately, heatwaves can drive insect biodiversity loss through both direct death and fertility losses, which is concerning given that heatwaves are increasing in frequency and intensity due to ongoing climate change." Dr Weaving said:"We looked at this in tsetse flies which spread the disease sleeping sickness in sub-Saharan Africa to humans, livestock and wild animals.

Senior author on the study, Dr Sinead English, said:"Our study provides important insights to how climate change will affect disease-carrying insects. We can't assume that patterns in tsetse match those found in better-studied lab systems like seed beetles or fruit flies."

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