There are only 30 to 50 panthers remaining, and the reason for the decline has been a mystery. In England and the U.S., cryptorchidism has more than doubled in men during the last four decades. Furthermore, some Florida panthers are sterile and others produce abnormal or deformed sperm. Petrochemical corporations and agricultural giants continually dump billions of pounds of endocrine-disrupting toxins into the environment each year. Government goes along.
Scientists continue to study birds, uncovering new evidence of reproductive damage.
He attributes this behavior partly to male gulls' growing indifference to sex. Effects on Androgenic Status. Effects on Sexual Behavior and the Regulation of Luteinizing Hormone Secretion in Adulthood. Effects on Spermatogenesis and Reproductive Capability.