Male Faeders (IMAGE)
Caption
The male Faeders look so much like the females that they can sneak into the mating arena unnoticed. A superenzyme breaks down testosterone directly in their blood. As a result, there is little testosterone circulating in the body and reaching the brain, but enough in the testes to produce sperm.
Credit
MPI for Biological Intelligence/ Axel Griesch
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License
Original content