Quantcast

Latest Aphids Stories

Betrayal Of The Aphids
2014-06-03 14:58:11

By Iqbal Pittalwala, University of California - Riverside Aphids are devastating insect pests and cause great losses to agriculture worldwide. These sap-feeding plant pests harbor in their body cavity bacteria, which are essential for the aphids' fecundity and survival. Buchnera, the bacterium, benefits also because it cannot grow outside the aphid. This mutually beneficial relationship is sabotaged, however, by the bacterium which proceeds to betray the aphid, a research team led by...

2013-12-05 23:45:13

Viruses alter plant biochemistry in order to manipulate visiting aphids into spreading infection University of Cambridge researchers have shown that viruses use aphids as pawns, discouraging the insects from permanently settling on already-infected crops and using this forced migration to spread infection to healthy vegetation. Aphids are sap-sucking insects that attack many different types of plants and are major transmitters of crop-infecting viruses. By altering plant biochemistry,...

2013-04-10 16:18:02

Scientists at The University of Manchester have found evidence of the genetic basis of the evolutionary arms-race between parasitoids and their aphid hosts. The researchers studied the reaction of aphids when a parasitic wasp with genetic variation laid eggs in them. They found that different genotypes of the wasp affected where the aphids went to die, including whether they left the plant host entirely. The team also found an example of the emergence of a shared phenotype that was partly...

Predator Prey Relationship In Insects And Plants Drives Evolution
2012-10-05 09:30:39

April Flowers for redOrbit.com - Your Universe Online Economists know that the consumer's taste drives variety and innovation in almost every field of industry. It is the same in the natural world. An international team of researchers has determined that just as consumers' diverse food preferences give rise to varied menu offerings, the preferences of plant-eating insects' play a role in maintaining and shaping the genetic variation of their host plants in a geographic area. The new...


Word of the Day
sough
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'
Related