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



New Zealand Plant Protection 56 (2003): 123-128

The effect of endophyte (Neotyphodium uncinatum) in meadow fescue on grass grub larvae

A.J. Popay, R.J. Townsend and L.R. Fletcher

ABSTRACT

Grass grub (Costelytra zealandica) population density, mean larval weight and visible damage were lower in meadow fescue (Festuca pratensis) infected with the endophyte Neotyphodium uncinatum (E+) than in uninfected meadow fescue (Eľ) in an unreplicated field trial. In two bioassays, third instar grass grubs ate all meadow fescue Eľ roots but significantly less of the E+ roots. Larvae fed E+ roots lost weight at the same rate as unfed control larvae. Larvae given a choice between maize and either E+ or Eľ meadow fescue in a pot trial consumed 33% more of the maize in the E+ treatment than in the Eľ treatment. Weight gain of larvae in E+ treatments was significantly less than in Eľ in both the choice and no-choice pot trials, but survival was the same. It was concluded that meadow fescue infected with N. uncinatum deters grass grub larval feeding but has no major toxic effects.

Keywords: meadow fescue, Neotyphodium uncinatum, endophyte, grass grub, Scarabaeidae.

Related articles
pdfResponse of black beetle and red-headed pasture cockchafer larvae to loline alkaloids in meadow fescue roots
R.H. Bryant, N.E. Cameron and G.R. Edwards (2010)
New Zealand Plant Protection 63: 219-223
pdfEndophyte-infected meadow fescue and loline alkaloids affect Argentine stem weevil larvae
A.J. Popay, B.A. Tapper and C. Podmore (2009)
New Zealand Plant Protection 62: 19-27
pdfRoot loline concentration in endophyteinfected meadow fescue (Festuca pratensis) is increased by grass grub (Costelytra zealandica) attack
B.J. Patchett, R.B. Chapman, L.R. Fletcher and S.R. Gooneratne (2008)
New Zealand Plant Protection 61: 210-214
pdfGrass grub damage and mycorrhizal colonisation of grapevine rootstocks
D.C. Mundy, P.A. Alspach and J. Dufay (2005)
New Zealand Plant Protection 58: 234-238
pdfThe production of loline alkaloids in artificial and natural grass/endophyte associations
O.J.-P Ball and B.A. Tapper (1999)
Proceedings of the NZ Plant Protection Conference 52: 264-269

Copyright © 2003 New Zealand Plant Protection Society (Inc.).

Please refer to the terms of use.