Male Scientists Demonstrate that Ejaculated Fluid is Conceivably Dual-Use

Three male scientists (all of them humans) go to great lengths to demonstrate that females (at least if they are flies) can, should they want or need to, regard ejaculate as a dual-use fluid. Their study is: “Elucidating the function of ejaculate expulsion and consumption after copulation by female Euxesta bilimeki,” Christian Luis Rodriguez-Enriquez, Eduardo […]

Ichthyology’s most salacious study

Is this ichthyology’s most salacious study? “Female mouthbrooders in control of pre- and postmating sexual selection,” Marcel P. Haesler, Charlotte M. Lindeyer, Oliver Otti, Danielle Bonfils, Dik Heg and Michael Taborsky, Behavioral Ecology, epub June 14, 2011. (Thanks to investigator Charles Oppenheim for bringing this to our attention.) The authors, at various institutions in Switzerland, […]

New View of the Importance of Water

A new appreciation of how beetles appreciate fluids: “Female Callosobruchus Maculatus Mate When They are Thirsty: Resource-rich Ejaculates as Mating Effort in a Beetle,” Martin Edvardsson, Animal Behaviour, vol. 74, no. 2, August 2007, pp. 183-8. (Thanks to Kit Howard for bringing this to our attention.) The authors, at Uppsala University and the University of […]