Abundance and parasitism of clover root weevil (<i>Sitona lepidus</i>) and Argentine stem weevil (<i>Listronotus bonariensis</i>) in pastures
AbstractThe period from 2006 to 2010 in the North Island encompasses the widespread establishment of Irish Microctonus aethiopoides for the biocontrol of clover root weevil (Sitona lepidus) and a severe drought in 2008 that greatly reduced host availability This parasitoid occupies the same pasture habitat as Microctonus hyperodae a parasitoid with a similar life cycle introduced to control Argentine stem weevil (Listronotus bonariensis) A retrospective study was carried out on L bonariensis data and stored samples collected during S lepidus studies It was found that at all four initial M aethiopoides release sites L bonariensis populations were lowest in 2007 and 2008 while S lepidus populations were lowest in 2008 and 2009 Microctonus hyperodae parasitism levels were lowest in 2009 with overall regional means ranging from 5 in Manawatu to 11 in Waikato whereas corresponding Irish M aethiopoides parasitism levels were 43 and 72 respectively
How to Cite
Gerard, P.J., M. Vasse, and D.J. Wilson. “Abundance and Parasitism of Clover Root Weevil (<i>Sitona lepidus</i>) and Argentine Stem Weevil (<i>Listronotus bonariensis</i≫) in Pastures”. New Zealand Plant Protection 65 (January 8, 2012): 180–185. Accessed January 25, 2022. https://journal.nzpps.org/index.php/nzpp/article/view/5391.