New Zealand Plant Protection 55 (2002): 390-395
European earwigs (Forficula auricularia L.) were sampled in a Canterbury apple orchard over two growing seasons using shelter traps comprised of corrugated cardboard rolls. Adult activity peaked during December and January in both seasons, while activity of nymphs peaked two weeks earlier. Earwig counts were consistently higher in a block receiving herbicide treatments, compared with an adjacent block receiving pea straw mulch. Competition between the sampling unit and the surrounding peastraw habitat probably explains this effect. Factors affecting the sampling method used are discussed, and the need for an alternative sampling system that better reflects absolute abundance is concluded.
Keywords: biological control, predation, European earwig, apples.
|European earwig as a potential biological control agent of apple leaf-curling midge|
X.Z. He, Q. Wang and J. Xu (2008)
New Zealand Plant Protection 61: 343-349
|Effect of cardboard shelter traps on predation of diaspidid scale insects by european earwigs, Forficula auricularia, in kiwifruit|
D.P. Logan, B.J. Maher, P.G. Connolly and M.J. Pettigrew (2007)
New Zealand Plant Protection 60: 241-248
|European earwigs, Forficula auricularia, and predation of scale insects in organic and conventionally managed kiwifruit|
B.J. Maher and D.P. Logan (2007)
New Zealand Plant Protection 60: 249-253
|A technique for measuring growth rate and survival of armoured scale insects|
M.G. Hill, N.A. Mauchline, L.R. Cate and P.G. Connolly (2005)
New Zealand Plant Protection 58: 288-293
Copyright © 2002 New Zealand Plant Protection Society (Inc.).