A cricket has been found with unusually large testicles:
a tuberous bushcricket whose testicles account for over 13 percent of its body mass, a percentage greater than any other creature on Earth!
Here are the details:
“Traditionally it has been pretty safe to assume that when females are promiscuous, males use monstrously-sized testicles to deliver huge amounts of sperm to swamp the competition,” said researcher James Gilbert of Cambridge University.
“Our study shows that we have to rethink this assumption. It looks as though the testes may be that big simply to allow males to mate repeatedly without their sperm reserves being exhausted.”
Said Vahed: “Extra large testes in bushcrickets allow males to transfer relatively small ejaculates to a greater number of females. Males don’t put all their eggs – or rather sperm – in one basket.”