Agrow is part of the Business Intelligence Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC’s registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

This copy is for your personal, non-commercial use. Please do not redistribute without permission.

Printed By

UsernamePublicRestriction
UsernamePublicRestriction

Bt toxins safe to insect predators

US researchers have shown that genetically modified crops producing Bt toxins have no adverse effects on two beneficial insect predators or on an entomopathogenic nematode. The scientists took Bt-resistant cabbage looper (Trichoplusia ni) caterpillars and fall armyworms (Spodoptera frugiperda) and fed them Bt maize and cotton producing Cry1Ac, Cry2Ab and Cry1F toxins. They then fed the pests to insidious flower bugs (Orius insidiosus) and big-eyed bugs (Geocoris punctipes) for two generations and compared them with another group of predators that consumed insects fed on non-Bt plants. The researchers found that survival, development, adult mass, fecundity and fertility of the insect predators in both groups were similar. "This research demonstrates that current Bt proteins used in corn and cotton crops globally do not harm G punctipes or O insidious, two important insect predators that help suppress pest populations on corn, cotton and many other crops," says Dr Anthony Shelton, a professor of entomology at Cornell University and one of the co-authors of the study.

Advertisement

Topics

What to read next

Advertisement
UsernamePublicRestriction

Register

AG001032

Ask The Analyst

Please fill in the form below to send over your enquiry or check the Ask The Analyst Page to find out more about the service

Your question has been successfully sent to the email address below and we will get back as soon as possible. my@email.address.

All fields are required.

Please make sure all fields are completed.

Please make sure you have filled out all fields

Please make sure you have filled out all fields

Please enter a valid e-mail address

Please enter a valid Phone Number

Ask your question to our analysts

Cancel