- News Home
12 December 2013 1:00 pm ,
Vol. 342 ,
The iconic 125-year-old Lick Observatory on Mount Hamilton near San Jose, California, is facing the threat of closure...
Recent results from the Curiosity Mars rover have helped scientists formulate a plan for the next phase of its mission...
A new, remarkably powerful drug that cripples the hepatitis C virus (HCV) came to market last week, but it sells for $...
In pretoothbrush populations, gumlines would often be marred by a thick, visible crust of calcium phosphate, food...
Evolutionary biologists have long studied how the Mexican tetra, a drab fish that lives in rivers and creeks but has...
Victorian astronomers spent countless hours laboriously charting the positions of stars in the sky. Such sky mapping,...
In an ambitious project to study 1000 years of sickness and health, researchers are excavating the graveyard of the now...
Stefan Behnisch has won awards for designing science labs and other buildings that are smart, sustainable, and...
- 12 December 2013 1:00 pm , Vol. 342 , #6164
- About Us
ScienceShot: Largest Testes Found on Tiny Insect
9 November 2010 7:01 pm
Who's got the biggest testicles? Put your hands down, guys. Bragging rights belong to the bush cricket Platycleis affinis, according to a paper published online today in Biology Letters. The insect's testes (inset) average 70 mg a piece, together making up almost 14% of its body mass. (Human testes, by contrast, make up a mere 0.04% to 0.08% of body mass.) That gives the crickets the largest relative testicles of any known animal. The gift seems to help them score mates, but they don't release any more sperm than less endowed insects. That may be because species with big testicles often have notoriously promiscuous females as well, so the males don't want to spend all of their seed in one place.
See more ScienceShots.