Evidence for sperm transfer during sneaky mating in wild Trinidadian guppies


Author to whom correspondence should be addressed. Tel.: 01334 476161; fax: 01334 463600; email: em1@st-andrews.ac.uk


Among Trinidadian guppies Poecilia reticulata, 15% of non-receptive females had recoverable sperm that must have come from successful sneaky matings. These results provide the first evidence that sneaky mating is a successful method of sperm transfer in wild populations of the guppy.