Unusual Reproductive Strategies May Boost Survival in Sharks and Rays
Sharks, rays, and other chondrichthyans have evolved a remarkable range of reproductive strategies, allowing them to thrive for hundreds of millions of years. Two particularly unusual methods—facultative parthenogenesis and multiple embryos per egg case (MEPE)—may provide key survival advantages, though scientists are still investigating their evolutionary benefits. Facultative Parthenogenesis: Reproduction Without Males Facultative parthenogenesis allows ...
