Plant resistance to the grass grubCostelytra zealandica(Coleoptera: Scarabaeidae)

摘要

Costelytra zealandicalarvae feeding on roots ofLotus pedunculatusgained significantly less weight than those feeding on aL. pedunculatus#xD7;L. corniculatushybrid, or on otherLotusandTrifoliumspecies. Among cultivars ofLotus pedunculatus, body-weight gains and survival rates were significantly lower under #x2018;Grasslands 4704#x2019; and #x2018;Grasslands 4705#x2019; (Maku tetraploid) than under #x2018;Grasslands 4703#x2019;. Weight gains and survival rates of C. zealandica larvae feeding on #x2018;Lupinus angustijolius#x2019; (blue lupin) were significantly lower than those of larvae feeding on #x2018;Trifolium pratense#x2019; (red clover),