Utilization of hybrid oak hosts by a monophagous gall wasp: How little host character is sufficient?

@article{Moorehead1993UtilizationOH,
  title={Utilization of hybrid oak hosts by a monophagous gall wasp: How little host character is sufficient?},
  author={Jeff R. Moorehead and Mark L. Taper and Ted J. Case},
  journal={Oecologia},
  year={1993},
  volume={95},
  pages={385-392}
}
We examined the utilization by the cynipid gall former, Andricus californicus, of oak trees ranging across a hybrid continuum from pure Quercus dumosa to pure Q. engelmannii. Two components of utilization were considered, the proportion of trees parasitized and the density of galls on parasitized trees. Although the wasp normally only parasitizes Q. dumosa, galls were found on trees with up to 85% of the genetic character of the non-host, as determined by a hybrid index. The proportion of… CONTINUE READING
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