An old insect pest reemerges in organic orchards

Sep 28, 2012
This is an adult Orchestes pallicornis (apple flea weevil). Credit: © 2012 Entomological Society of America

The apple flea weevil, a sporadic insect pest in the early 1900s, has reemerged as a severe pest in organic apple orchards in Michigan, where outbreak population levels have been observed since 2008, and damage has resulted in up to 90% losses for apple growers.

According to the authors of "The Reemergence of an Old Pest, Orchestes pallicornis (Coleoptera: Curculionidae)," an open-access article appearing in the lastest issue of the Journal of , the weevil can be managed by broad-spectrum insecticides used in conventional agriculture, but there are currently no proven management options for use in organic production. And, as broad-spectrum materials are replaced by reduced-risk compounds, it is possible that the apple flea weevil will increasingly become an important pest in apple production.

The apple flea weevil is a small, 2-3 millimeter black weevil with enlarged high legs for jumping. Adults feed on buds and leaves, and the larvae are leaf miners.

In the article, the authors discuss the apple flea weevil's biology and the damage it does to plants, as well as methods for growers to monitor and manage them.

Explore further: 'No take zones' in English Channel would benefit marine wildlife and the fishing industry

More information: esa.publisher.ingentaconnect.c… 03/00000003/art00003

add to favorites email to friend print save as pdf

Related Stories

Ag experts issue alfalfa weevil warming

Apr 11, 2007

U.S. agricultural experts expect the past several years of mild winters to increase the populations of many insect species, including alfalfa weevils.

Biocontrol of sweetpotato weevils

Aug 04, 2011

The warm humid conditions of the tropics make it tough for farmers to keep their crops pest free. For sweetpotato growers in Micronesia, the sweetpotato weevil seems to defy efforts to control its population. ...

Pest preferences for cranberry cultivars determined

Jun 22, 2011

To determine whether insect herbivores have a feeding preference for certain cultivars of cranberry, researchers investigated the phenolic profiles in the foliage of two cranberry cultivars, then isolated ...

50 years of cereal leaf beetle management research

Oct 17, 2011

A new, open-access article in the Journal of Integrated Pest Management provides a review of cereal leaf beetle biology, past and present management practices, and current research being conducted.

Discovery of red palm weevil in California

Oct 26, 2010

Scientists and growers met on campus Friday, Oct. 22, to address a potentially devastating new threat to California?s iconic palm trees: the red palm weevil.

Recommended for you

Lifeline extended for critically endangered porpoise

3 hours ago

Mexico's recent decision to buy-out gillnet fisheries in the upper Gulf of California may give one of the world's rarest species the breathing space it needs to survive. Time is still ticking, but the move ...

Hundreds of starving koalas killed in Australia

7 hours ago

Close to 700 koalas have been killed off by authorities in southeastern Australia because overpopulation led to the animals starving, an official said Wednesday, sparking claims of mismanagement.

World's wildlife critical to the economies of nations

Mar 03, 2015

Wildlife is critical to the economies of nations. New Zealand's wildlife – whales, dolphins, red deer, thar, albatross, kiwi, tuatara, fish and kauri – attract tourists. And the tourists who come to see ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.