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Emile van Lieshout, Joseph L. Tomkins and Leigh W. Simmons Heat stress but not inbreeding affects offensive sperm competitiveness in Callosobruchus maculatus Ecology and Evolution 3

Version of Record online: 24 JUL 2013 | DOI: 10.1002/ece3.667

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Stress is known to affect ejaculate traits, but exactly how genetic stress (inbreeding) and environmental stress (heat shock) interact remains poorly understood. Using the beetle Callosobruchus maculatus, we show that pupal heat stress reduces sperm competitiveness while increasing viability. Inbreeding had neither main nor interactive effects, showing that not all stressors cause similar decreases in function.

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