NZPPS   ·  Journal home   ·   Past issues  ·  This volume   ·   Previous abstract   ·   Next abstract

New Zealand Plant Protection 57 (2004): 239-243

Testing for pesticide resistance in lettuce aphid

P.J. Workman, M.A.W. Stufkens, N.A. Martin and R.C. Butler


Lettuce aphid, Nasonovia ribisnigri Mosely (Hemiptera: Aphidoidae), was first detected in New Zealand on lettuce (Lactuca sativa) in Christchurch in March 2002. Lettuce growers immediately found the new pest difficult to control using insecticides. Failure of insecticides to provide adequate control could have been due to inadequate spray coverage because lettuce aphid prefers to feed in the interior of the lettuce or to insecticide resistance, which has been recorded in lettuce aphid in Europe. To determine the efficacy of topically applied insecticides on lettuce aphid in New Zealand, 12 pesticides were applied at recommended field rates with a Potter tower to apterous lettuce aphids on lettuce discs imbedded in agar. Only acephate (80.6%) and methomyl (90.7%) failed to give complete mortality after 48 hours at 18C. The concentration-mortality relationships for acephate, methomyl and pirimicarb were estimated and compared with data from Europe.

Keywords: lettuce aphid, Nasonovia ribisnigri, lettuce, insecticide resistance.

Related articles
pdfEffect of body weight on reproductive performance of Micromus tasmaniae (Walker) (Neuroptera: Hemerobiidae)
A. Yadav, Q. Wang and X.Z. He (2010)
New Zealand Plant Protection 63: 208-213
pdfEffect of photoperiod on development and reproduction in Tasmanian lacewing Micromus tasmaniae (Walker) (Neuroptera: Hemerobiidae)
A. Yadav, X.Z. He and Q. Wang (2008)
New Zealand Plant Protection 61: 338-342
pdfEffectiveness and persistence of six insecticides for control of lettuce aphid on field lettuce in Canterbury, New Zealand
M.A.W. Stufkens and A.R. Wallace (2004)
New Zealand Plant Protection 57: 233-238
pdfDistribution, host range and flight pattern of the lettuce aphid in New Zealand
M.A.W. Stufkens and D.A.J. Teulon (2003)
New Zealand Plant Protection 56: 27-32
pdfNasonovia ribis-nigri, a new aphid pest found on lettuces (Lactuca sativa) and Ribes spp. in Canterbury
M.A.W. Stufkens, D.A.J.Teulon and S.R. Bulman (2002)
New Zealand Plant Protection 55: 437

Copyright © 2004 New Zealand Plant Protection Society (Inc.).

Please refer to the terms of use.