Safety in New Zealand weed biocontrol a nationwide survey for impacts on nontarget plants
Autor: | Quentin Paynter, Chris J. Winks, H. M. Harman, Paul G. Peterson, Toni M. Withers, Lindsay Smith, Shane Hona, M. L. Haines, Simon V. Fowler, J. R. A. Wilson-Davey, A. H. Gourlay |
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Rok vydání: | 2004 |
Předmět: | |
Zdroj: | New Zealand Plant Protection. 57:102-107 |
ISSN: | 1179-352X 1175-9003 |
Popis: | The safety record of weed biocontrol was questioned recently when examples of damage to non-target plants were reported overseas. Until now, systematic investigations of non-target feeding have not been performed in New Zealand. Results of surveys looking for evidence of non-target damage caused by 20 biological control agents released against weeds in New Zealand are presented. Most agents (16) are apparently host-specific. However, two species (Tyria jacobaeae and Phytomyza vitalbae) were recorded attacking native plants, although their attack was very minor and predictable from host-range testing performed prior to release. For two other species, Bruchidius villosus and Cydia succedana, non-target attack was not predicted from host-range testing. Larval feeding by these species was confined to mainly weedy, exotic plants that are closely related to their target plants. The reliability of host-specificity testing and overall safety record of weed biological control in New Zealand are discussed. |
Databáze: | OpenAIRE |
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