Egg-laying beginning of the end for dinosaurs

Their reproductive strategy spelled the beginning of the end: The fact that dinosaurs laid eggs put them at a considerable disadvantage compared to viviparous mammals. Together with colleagues from the Zoological Society ...

Coral embryos clone themselves

Forming a unique part of the animal kingdom, corals have built the only living entity visible from space; the Great Barrier Reef. Scientists from the Australian Institute of Marine Science (AIMS) have recently discovered ...

Vicious queen ants use mob tactics to reach the top

Leptothorax acervorum ants live all over the Northern hemisphere, but their reproductive strategy depends on habitat. Colonies are polygynous (more than one queen) in the forest of Siberia and central Europe, but functionally ...

Aggressive male mating behavior can endanger species

Aggressive male mating behavior might well be a successful reproductive strategy for the individual but it can drive the species to extinction, an international research team headed by evolutionary biologist Daniel Rankin ...

Poor start in life need not spell doom in adulthood

Does the environment encountered early in life have permanent and predictable long-term effects in adulthood? Such effects have been reported in numerous organisms, including humans.

Scientists reveal cracks in egg theory

(PhysOrg.com) -- Scientists in Cambridge have found cracks in the long-standing theory that the number of eggs animals have -- and the size of those eggs -- is related to how much parental care they invest in their offspring.

Infertility and the battle of the sexes

About 10% of all couples hoping for a baby have fertility problems. Environmentalists say pollution is to blame and psychiatrists point to our stressful lifestyles, but evolutionary biologist Dr. Oren Hasson of Tel Aviv University's ...

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