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Pre-copulatory reproductive behaviours are preserved in Drosophila melanogaster infected with bacteria
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Pre-copulatory reproductive behaviours are preserved in Drosophila melanogaster infected with bacteria
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Pre-copulatory reproductive behaviours are preserved in Drosophila melanogaster infected with bacteria
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Journal Article
Pre-copulatory reproductive behaviours are preserved in Drosophila melanogaster infected with bacteria
2022
Overview
The activation of the immune system upon infection exerts a huge energetic demand on an individual, likely decreasing available resources for other vital processes, like reproduction. The factors that determine the trade-off between defensive and reproductive traits remain poorly understood. Here, we exploit the experimental tractability of the fruit fly Drosophila melanogaster to systematically assess the impact of immune system activation on pre-copulatory reproductive behaviour. Contrary to expectations, we found that male flies undergoing an immune activation continue to display high levels of courtship and mating success. Similarly, immune-challenged female flies remain highly sexually receptive. By combining behavioural paradigms, a diverse panel of pathogens and genetic strategies to induce the fly immune system, we show that pre-copulatory reproductive behaviours are preserved in infected flies, despite the significant metabolic cost of infection.
Publisher
Royal Society,The Royal Society
