Why Some Animals Mate Themselves to Death

Portrait of a cute Dusky Antechinus with large watchful eyes.

A cute Dusky Antechinus with large watchful eyes.

Is sex worth dying for? For a few male marsupial species, it is—when they know their offspring will survive, a new study says.    While extremely rare among mammals, so-called semelparity, or suicidal reproduction, is common in nature. Many plants—including all grains, many vegetables, and all plants that live just a year—reproduce this way, as do salmon, insects, and a handful of frogs and lizards.    Just four mammal species are known to reproduce this way, and all are rare insect-eating marsupials. These dads die after devoting all their resources and energy to mating, an effort that helps their sperm—and genes—win out.    Since the 1970s, scientists have suspected that females synchronize mating so that they wean their young at the same time that insect abundance peaks each year. During that shortened, frenzied mating period, competition to mate with the females and methods of doing so are taken to extremes….MORE

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We have a HUGE responsibility to protect our children and their futures. Our Gulf of Mexico has nearly been destroyed by the Deep-water Horizon catastrophe and many families here will never recover. Paradise lost, so it goes. I’m doing my best to apolitically educate anyone that cares about the impact on our environment by technology and “for-profit” progress. We forget, too frequently that we SHARE this planet with millions of other life-forms and as the most “powerful” species, we must be more cognizant of our greed versus the well-being of our planet. Thanks again for visiting and please check back often. -Gregg indianrocksbridge@yahoo.com
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