The storage of sperm by females across successive reproductive cycles is well documented in internal fertilisers, yet the fate of stored sperm when they compete with ‘new’ sperm to fertilise a female’
Mammalian spermatozoa, particularly those of rodent species, are extremely complex cells and differ greatly in form and dimensions. Thus, characterization of sperm size and, particularly, sperm shape
Eleven strains of spectinomycin resistant Bacillus subtilis were grown together in a mixed community at various levels of antibiotic selection. The community was sampled at 0, 3, 6, 12, 24, 48, and 72
The sexy-sperm hypothesis posits that polyandrous females derive an indirect fitness benefit from multi-male mating because they increase the probability their eggs are fertilized by males whose sperm
A GLMM fit by the Laplace approximation (R) revealed that the population from which the ova where derived had no effect on the proportion of ova fertilized by the sperm of males from the Rat Island po
