News tagged with aphids
Rapid evolution within single crop-growing season increases insect pest numbers
New research by scientists at the University of California, Riverside shows that evolution – genetic changes in populations over time – can occur so rapidly in organisms that its impact on population ...
Aug 15, 2011 |
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Soybean aphids starting to increase
The increase in soybean aphid numbers means producers should step up scouting efforts, but they also should take caution to avoid unnecessary spraying.
Aug 04, 2011 |
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Fewer aphids in organic crop fields
Farmers who spray insecticides against aphids as a preventative measure only achieve a short-term effect with this method. In the long term, their fields will end up with even more aphids than untreated fields. This has been ...
Jul 13, 2011 |
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Freefall -- aphids' survival strategy
As soon as aphids feeding on a plant sense the heat and humidity in a mammal's breath, they drop to safety before they are inadvertently ingested together with the plant the animal is feeding on. These findings by Moshe Gish ...
Jul 12, 2011 |
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New and old threats to soybean production
University of Illinois researchers identified the top pathogens, pests and weeds affecting soybean production in a recent article in Food Security. Soybean aphid, soybean rust, soybean cyst nematode, Sclerotina stem rot an ...
Jun 23, 2011 |
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Solving an old mystery with wasps
Swiss researchers at ETH Zurich and the University of Zurich have discovered that a single gene in a particular aphid wasp decides whether the insects reproduce sexually or asexually. This is not only of interest ...
Mar 01, 2011 |
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Identity theft by aphids
Collaborative research at the University of Guam has people asking: "What IS a species" and entomologists wondering about the relationship between an insect species and the host plant or plants it feeds on.
Jan 19, 2011 |
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Color-changing bacterium inside the pea aphid
A bacterium that can live symbiotically inside the pea aphid, Acyrthosiphon pisum, is able to change the insect’s body color from red to green, a RIKEN-led team of molecular entomologists has found. Becaus ...
Jan 07, 2011 |
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In Brief: A symbiotic, color-changing relationship
For the tiny pea aphid, body color is a matter of life and death: Red and green color morphs determine their susceptibility to various predators and parasites in the wild.
Nov 21, 2010 |
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Orchid tricks hoverflies: Eastern marsh helleborine mimics aphid alarm pheromones to attract pollinators
Even Darwin was a self-admitted orchid lover. Dictionaries describe orchids as exotic ornamentals. Indeed, these plants – more than 30000 different species are thought to exist – are exotic due their ...
Oct 14, 2010 |
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Aphid immune system aided by friendly bacteria
(PhysOrg.com) -- Conventional thinking says that animal immune systems have evolved to defend against harmful microorganisms, but a new Cornell study examines the role of friendly bacteria in shaping animal ...
Aug 19, 2010 |
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Plants may benefit from aphid warning pheromone
(PhysOrg.com) -- If your building has 10 false fire alarms one morning, it is human nature to ignore it when it goes off for the 11th time.
Aug 06, 2010 |
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Pest-resistant soybeans grow out of MSU research lab
(PhysOrg.com) -- Two lines of pest-resistant soybean painstakingly developed by a Michigan State University scientist promise healthier harvests for growers and a little green for the university too.
Aug 02, 2010 |
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Organic pesticides not always 'greener' choice, study finds
Consumers shouldn't assume that, because a product is organic, it's also environmentally friendly.
Jun 22, 2010 |
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Using a pest's chemical signals to control it
Agricultural Research Service (ARS) scientists are tapping into the biochemistry of one of the world's most damaging insect pests to develop a biocontrol agent that may keep the pest away from gardens and ...
May 17, 2010 |
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Aphid
Aphids, also known as plant lice and in Britain and the Commonwealth as greenflies, blackflies or whiteflies, (not to be confused with "jumping plant lice" or true whiteflies) are small sap sucking insects, and members of the superfamily Aphidoidea. Aphids are among the most destructive insect pests on cultivated plants in temperate regions. The damage they do to plants has made them enemies of farmers and gardeners the world over, but from a zoological standpoint they are a very successful group of organisms. Their success is in part due to the asexual reproduction capability of some species.
About 4,400 species of 10 families are known. Historically, many fewer families were recognised, as most species were included in the family Aphididae. Around 250 species are serious pests for agriculture and forestry as well as an annoyance for gardeners. They vary in length from 1 to 10 millimetres (0.04 to 0.39 in).
Natural enemies include predatory ladybirds, hoverfly larvae, parasitic wasps, aphid midge larvae, crab spiders, lacewings and entomopathogenic fungi like Lecanicillium lecanii and the Entomophthorales.
For more information about Aphid, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
