Resistance Mechanisms in Two Color Forms of the Tobacco Aphid (Homoptera: Aphididae)

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.


Cultures of the tobacco aphid, Myzu.s nicotianae Blackman, were collected from tobacco throughout major tobacco-growing regions of North Carolina and maintained in culture in the laboratory. Nine cultures of tobacco aphids were established. Four of these cultures were green in color; five were red. Slide-dip tests were performed with various insecticides and a known synergist. In tests with malathion, monocrotophos, acephate, and the esterase inhibitor S,S,S-tributyl phosphorotrithioate (DEF), resistance of aphids from the five red cultures and one green culture (from Duplin County) increased three to four times compared with the remaining three green cultures. In tests with endosulfan and methamidophos, a breakdown product of acephate, all nine cultures responded equally to treatment. Total carboxylesterase activities of aphids from all nine cultures were measured in a spectrophotometric assay. Aphids from the five red cultures and the green culture from Duplin County demonstrated "'2.5 times the carboxylesterase activity as aphids from the remaining three green cultures. In all cultures, synergism of malathion, acephate, and methamidophos by DEF was apparent.

Document Type: Research Article

Publication date: December 1, 1990

More about this publication?
Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more