News tagged with reproductive strategies
First fruitful, then futile: Ammonites or the boon and bane of many offspring
Ammonites changed their reproductive strategy from initially few and large offspring to numerous and small hatchlings. Thanks to their many offspring, they survived three mass extinctions, a research team ...
Apr 23, 2012 |
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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 ...
Other Sciences / Archaeology & Fossils
Apr 17, 2012 |
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Threats to freshwater mussels and the consequences for ecosystems
At the University of Oklahoma's Aquatic Research Facility in Norman, zoologist Caryn Vaughn shows off freshwater mussels that she's recently collected from rivers in the southeastern part of the state. One river alone may ...
Mar 13, 2012 |
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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 ...
Mar 01, 2012 |
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Complex sex life of goats could have implications for wildlife management
A new study of the mating habits of mountain goats reveals the vastly different strategies of males in different populations and could shed light on the unseen impacts of hunting.
Dec 14, 2011 |
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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 ...
Sep 30, 2011 |
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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 ...
May 16, 2011 |
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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.
Oct 21, 2010 |
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Sex, drugs and moral goals: Study of reproductive strategies and recreational drug use
Why is there so much disagreement about whether using recreational drugs is morally wrong? A University of Pennsylvania psychology study shows that the debate about drugs might really be about sex.
Medicine & Health / Psychology & Psychiatry
Jun 16, 2010 |
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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 ...
Jun 08, 2010 |
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Deep sedimentation of acantharian cysts -- a reproductive strategy?
Spore-like reproductive cysts of enigmatic organisms called acantharians rapidly sink from surface waters to the deep ocean in certain regions, according to new research. Scientists suspect that this is part of an extraordinary ...
Space & Earth / Earth Sciences
Mar 08, 2010 |
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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 ...
Sep 08, 2009 |
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Partner status influences women's interest in men
A study by Indiana University neuroscientist Heather Rupp found that a woman's partner status influenced her interest in the opposite sex.
Medicine & Health / Psychology & Psychiatry
May 28, 2009 |
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Housing shortage alters reproductive behaviour in blue tits
(PhysOrg.com) -- Increased competition for rare breeding sites causes female blue tits to invest more time in their current brood, to spend more time feeding their offspring and also to produce more male offspring ...
Mar 09, 2009 |
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