Abstract – Creeping towards success against a loathed invasive vine in New Zealand

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Abstract

A biocontrol programme against a South American vine, moth plant Araujia sericifera, in New Zealand (NZ) was initiated in 2002. Surveys in South America commenced in 2004 and revealed a natural enemy biota attacking the plant rich in potential biocontrol agents for NZ. By 2008, a chrysomelid beetle with root-boring larvae, Freudeita cupripennis, and a defoliating rust fungus, Puccinia araujiae, were prioritised as candidate biocontrol agents, and a fruit fly, Anastrepha nigrotaenia, was added to this shortlist in 2010. All three species proved sufficiently host-specific to be released in NZ. However, the implementation of the Convention on Biological Diversity and associated development of Access and Benefit Sharing legislation in Argentina, a taxonomic conundrum, and an objection to the release of one of the agents by New Zealand’s Ministry for Primary Industries due to potential impacts on trade, have all caused significant delays. To date, only F. cupripennis has been released, although prospects for releasing P. araujiae are good. At this stage, we still do not know if and when A. nigrotaenia will be released.

keywords 

Moth plant Araujia sericifera 

Anastrepha 

Colour morph 

Regulatory system 

Trade 

Highlights 

Surveys in South America revealed a rich natural enemy biota attacking moth plant 

One candidate agent, a fruit fly belonging to the genus Anastrepha posed a taxonomic conundrum 

This was resolved but a potential threat to trade has delayed its release in New Zealand