science top stories popular news  

Daily non-political popular news in brief.

Wood ant queen has no egg-laying monopoly

06-27-2007 · EurekAlert!

Insect queens were thought to have an egg-laying monopoly, but nine wood ant species revealed widespread reproductive activity by worker ants. Genetic analysis showed that as many as one in four eggs were laid by workers. Workers in many insect species can lay unfertilized male eggs, but usually workers in large colonies enforce the exclusive reproduction of the queen.

Read more »

Keywords: wood, ant, queen, egg-laying, monopoly, egg, laying

« Previous | Next »

Similar news on "Wood ant queen has no egg-laying monopoly":

  1. Why do some queen bees eat their worker bee's eggs?
    12-04-2006 · EurekAlert!
    Worker bees, wasps and ants are often considered neuter. But in many species they are females with ovaries, who although unable to mate, can lay unfertilized eggs which turn into males if reared. For some species, such as bumble bees, this is the source of many of the males in the species. But in others, like the honeybee, workers "police" each other -- killing eggs laid by workers or confronting egg-laying workers.
    Similar news · Read more »
  2. How do marine turtles return to the same beach to lay their eggs?
    02-26-2007 · EurekAlert!
    French scientists from CNRS and other groups shows that the marine turtles use a relatively simple navigation system involving the earth's magnetic field, and this allows them to return to the same egg-laying site without having the ability to correct for the deflection of ocean currents. Published in the Current Biology and Marine Ecology Progress Series.
    Similar news · Read more »
  3. Worker or queen? Harvester ant moms set daughters' fates
    02-14-2008 · EurekAlert!
    When it comes to deciding what harvester ant daughters will be when they grow up, mother queens hold considerable sway, according to a new study...
    Similar news · Read more »
  4. Egg Shell Game
    05-12-2007 · Science News Online
    Birds apparently cheat chance when it comes to laying eggs that contain sons or daughters.
    Similar news · Read more »
  5. Fire Ant-attacking Fly Spreading Rapidly In Texas
    09-29-2006 · ScienceDaily
    Parasitic flies introduced to control red imported fire ants have spread over four million acres in central and southeast Texas since the flies' introduction in 1999, researchers at the University of Texas at Austin have discovered using new flytraps they developed.
    Similar news · Read more »
  6. Frog molecule could provide drug treatment for brain tumors
    06-26-2007 · EurekAlert!
    A synthetic version of a molecule found in the egg cells of the Northern Leopard frog (Rana pipiens) could provide the world with the first drug treatment for brain tumors.
    Similar news · Read more »
  7. Laying sleeping sickness to rest
    03-19-2007 · EurekAlert!
    The parasite that leads to sleeping sickness can be lulled to sleep itself using a newly discovered pathway, according to research published online this week in EMBO reports. Trypanosoma brucei is a parasite that causes sleeping sickness resulting in neurological damage and death.
    Similar news · Read more »
  8. Queen bee promiscuity boosts hive health
    12-08-2006 · EurekAlert!
    Though promiscuity may be risky behavior for humans, it's healthy for honeybees: Queen honeybees who indulge in sexual surfeits with multiple drones produce more disease-resistant colonies than monogamous monarchs, according to a new study.
    Similar news · Read more »
  9. Enzyme discovery sheds light on vitamin D
    07-24-2007 · EurekAlert!
    Surprising findings by Queen's University researchers have shed new light on how the "sunshine vitamin" D -- increasingly used to treat and prevent cancer and other diseases -- is broken down by our bodies.
    Similar news · Read more »
  10. Comatose locusts may help relieve migraines
    02-07-2008 · EurekAlert!
    The way locusts react to stress may provide an important clue to understanding what causes human migraines -- and how to reduce their painful effects, says Queen's University biology professor Mel Robertson.
    Similar news · Read more »