<i>Neolema ogloblini</i> exploring a new option for the control of tradescantia (<i>Tradescantia fluminensis</i>)

Authors

  • S.D. Jackman
  • P.G. Peterson
  • A.W. Robertson
  • C. van_Koten

DOI:

https://doi.org/10.30843/nzpp.2015.68.5804

Abstract

The leaf beetle Neolema ogloblini was released in 2011 as a biological control agent for Tradescantia fluminensis a major warm temperate forest environmental weed in New Zealand To assess whether N ogloblini can suppress T fluminensis and improve native seedling growth and survival a glasshouse experiment was established Kawakawa (Macropiper excelsum) and mahoe (Melicytus ramiflorus) seedlings were planted underneath uncontrolled T fluminensis and compared with seedlings (1) under T fluminensis damaged by N ogloblini (2) under T fluminensis sprayed with herbicide (triclopyr) and (3) released from competition by manually removing T fluminensis Seedlings did not grow faster in response to reduced T fluminensis biomass and increased light levels following feeding by N ogloblini over the 12 week experiment However seedling survival rates were higher (kawakawa 87 and mahoe 93) with N ogloblini feeding than herbicidetreatment (kawakawa 17 and mahoe 3) T fluminensis Survival in uncontrolled T fluminensis (kawakawa 90 and mahoe 57) varied for the two species This experiment suggests that regeneration of native plants may benefit from damage to T fluminensis caused by N ogloblini feeding in the field

Published

2015-01-08

How to Cite

Jackman, S., Peterson, P., Robertson, A., & van_Koten, C. (2015). <i>Neolema ogloblini</i> exploring a new option for the control of tradescantia (<i>Tradescantia fluminensis</i>). New Zealand Plant Protection, 68, 187-192. https://doi.org/10.30843/nzpp.2015.68.5804

Issue

Section

Benefits and challenges of insect biocontrol

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