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What are 3-D spider webs for?
The classic radial or "orb" spider web captures flying insects efficiently with a small amount of silk but such flat webs leave spiders exposed to their own predators. The derived "araneoid sheet web weavers" transformed the flat orb web into, usually, three-dimensional cobwebs and sheet webs.... view more (2003-01-02)

To deter a predator, kill its young!
Prey have evolved a suite of tricks to avoid falling victim to a predator. They may escape, hide, protect, become toxic/inedible or defend themselves. In principle, they could also scare the predator away, but this is risky when predators are big. Recent work led by a Dutch research team and... view more (2002-07-11)

Female guppies risk their lives to avoid too much male attention
Sexual harassment is a burden that females of many species face, and some may go to extreme lengths to avoid it.   view more (2006-05-15)

Fishing kills Fijian coral reefs
Outbreaks of a coral-eating starfish have occurred in Fiji resulting from overexploitation of the predatory fishes that normally limit its numbers. The impacts of the starfish are dramatic, with previously pristine coral reefs being turned into dull algal mats. Worryingly, Dulvy, Freckleton and... view more (2004-05-04)

Squid Skin Reveals Hidden Messages
In the animal world, squid are masters of disguise. Pigmented skin cells enable them to camouflage themselves-almost instantaneously-from predators.   view more (2006-09-22)

Flighty yet mighty
Those heading to the moors on August 12 may not be aware they are pitting their guns against the most powerful muscles on the planet. Leeds researcher Dr Graham Askew has calculated the muscle power generated by game birds such as quail, pheasant and grouse when taking flight, and found it to be... view more (2003-08-11)

Alien predators are more dangerous than native predators
Introduced predators such as foxes and cats are twice as deadly as native predators to Australia's unique native animals, a new study has found.   view more (2007-03-14)

Zoologists challenge longstanding theory that 'eyespots' mimic the eyes of predators' enemies
Circular markings on creatures such as butterflies are effective against predators because they are conspicuous features, not because they mimic the eyes of the predators' own enemies, according to research published today in the journal, Behavioral Ecology.   view more (2008-02-22)

Poison dart frog mimics gain when birds learn to stay away
Studying neotropical poison dart frogs, biologists at the University of Texas at Austin uncovered a new way that the frog species can evolve to look similar, and it hinges on the way predators learn to avoid the toxic, brightly colored amphibians.   view more (2006-03-09)

Prey not hard-wired to fear predators
Are Asian elk hard-wired to fear the Siberian tigers who stalk them" When wolves disappear from the forest, are moose still afraid of them?   view more (2007-06-21)

Catastrophic shift in species diversity and productivity of an ecosystem
Ecology and environmental management is largely predicated on the view that ecosystems respond to environmental changes in a smooth and straightforward way. However, in Ecology Letters, May, Schmitz reports on a long-term field experiment that may prompt a hard, critical look at this reigning view.... view more (2004-05-04)

Why are cod stocks collapsing?
Sudden collapses in many ecological systems are the rule rather than exceptions to the rule. This is shown by Professor Lennart Persson of Ume'å University, Sweden, in the latest issue of the scientific journal Proceedings of the National Academy of Sciences. Among other things, the article... view more (2002-09-23)

Will lemmings fall off climate change cliff?
Contrary to popular belief, lemmings do not commit mass suicide by leaping off of cliffs into the sea. In fact, they are quite fond of staying alive.   view more (2007-04-23)

Migrating songbirds learn survival tips on the fly
Migrating songbirds take their survival cues from local winged residents when flying through unfamiliar territory, a new Queen's University-led study shows.   view more (2008-06-26)

Theory of oscillations may explain biological mysteries
New mathematical studies of the interactions between oscillating biological populations may shed light on some of the toughest questions in ecology, including the number and types of species in an ecosystem, according to an article in the December 2006 issue of BioScience.   view more (2006-12-04)

Diversity in the deep blue seas
Nature magazine has published an article by Xabier Irigoien, a researcher at AZTI, the Basque Fisheries and Marine Technological Research Centre. The article provides data on the diversity of marine life at the bottom of the sea - particularly amongst algae. Species diversity Most research carried... view more (2004-06-28)

Predators: an overlooked player in plant-pollinator relationships
Biologists have long recognized that predators can help to shape ecological communities -- wolves promote the growth of young trees through predation on moose, otters keep kelp forests thriving by preying on sea urchins, etc. Yet we have seldom considered the consequences of predation on animals... view more (2003-08-13)

Duck-billed dinosaurs outgrew predators to survive
With long limbs and a soft body, the duck-billed hadrosaur had few defenses against predators such as tyrannosaurs. But new research on the bones of this plant-eating dinosaur suggests that it had at least one advantage: It grew to adulthood much faster than its predators, giving it superiority in... view more (2008-08-06)

Predators do more than kill prey
The direct effect predators have on their prey is to kill them. The evolutionary changes that can result from this direct effect include prey that are younger at maturity and that produce more offspring.   view more (2008-01-18)

Sea slug mixes chemical defense before firing at predators
When threatened by predators, sea slugs defend themselves by ejecting a potent inky secretion into the water consisting of hydrogen peroxide, ammonia and several types of acids.   view more (2005-12-19)

Aphids make 'chemical weapons' to fight off killer ladybirds
Cabbage aphids have developed an internal chemical defence system which enables them to disable attacking predators by setting off a mustard oil 'bomb'.   view more (2007-07-11)

Hareless: Yellowstone's rabbits have vanished, study says
A new study by the Bronx Zoo-based Wildlife Conservation Society found that jack rabbits living in the Greater Yellowstone Ecosystem have apparently hopped into oblivion.   view more (2008-02-15)

'Plant-eating predator to fight superweed is not magic bullet'
Plans to introduce plant-eating predators to fight a superweed spreading throughout Britain should not be seen as a 'magic bullet', says a world expert on Japanese knotweed at the University of Leicester.   view more (2008-10-15)

Controlling algal blooms
Diatoms, highly successful photosynthetic plankton responsible for 40% of the net primary production in the oceans, undergo seasonal population explosions called phytoplankton blooms that attract billions of krill, copepods, and other grazing predators.   view more (2006-02-21)

Predators drive the lemming cycle in Greenland
A recent study conducted in eastern Greenland and published in the October 31 issue of the Science magazine provides new understanding of the dynamics of arctic lemming populations. Olivier Gilg and Ilkka Hanski from the University of Helsinki, Finland, and Beno'®t Sittler from the University... view more (2003-10-29)
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