Risk assessment procedures for biological control agents in New Zealand: two case studies for generalists

BioControl ◽  
2020 ◽  
Author(s):  
Philippa J. Gerard ◽  
Barbara I. P. Barratt
BioControl ◽  
2021 ◽  
Vol 66 (1) ◽  
pp. 141-142 ◽  
Author(s):  
Débora P. Paula ◽  
David A. Andow ◽  
Barbara I. P. Barratt ◽  
Robert S. Pfannenstiel ◽  
Philippa J. Gerard ◽  
...  

2002 ◽  
Vol 106 (2) ◽  
pp. 228-232 ◽  
Author(s):  
Joël L. Vanneste ◽  
Robert A. Hill ◽  
Stuart J. Kay ◽  
Roberta L. Farrell ◽  
Patrick T. Holland

2019 ◽  
Vol 72 ◽  
pp. 280
Author(s):  
Emiliano R. Veronesi ◽  
Oluwashola Olaniyan ◽  
Stephen D. Wratten ◽  
Melanie Davidson ◽  
Chris Thompson

The tomato/potato psyllid (TPP), Bactericera cockerelli (Hemiptera, Triozidae), is an adventive psyllid in New Zealand that is a major pest of solanaceous crops and a serious threat to growers in the glasshouse industry. Worldwide, evaluation of potential biological control (BC) agents is normally conducted using single species and this is the case with some potential BC agents for TPP. However, the idea that multiple species can act synergistically remains largely untested so that is the aim of the current work, which is funded by Tomatoes New Zealand. The introduced parasitoid Tamarixia triozae is a BC agent of TPP that attacks mainly late instars. It lives for just 1 day when provided with water but can live up to 11 days (and consume more pests) when nectar in the flowers of buckwheat (Fagopyrum esculentum) is provided. In addition, another potential BC agent, the mirid bug Engytatus nicotianae, prefers young nymphal instars, while the ladybird Cleobora mellyi is voracious and consumes all instars. We are testing combinations of these species to understand the potential for synergies between and within trophic levels for better biological control.


2018 ◽  
Vol 10 ◽  
pp. 117954331875749 ◽  
Author(s):  
Maria Luisa Dindo ◽  
Satoshi Nakamura

Oviposition strategies and mechanisms of host selection in parasitoids may be crucial for the success of parasitization and parasitoid production. These aspects are far less known in tachinid parasitoids than in hymenopteran parasitoids. Depending on the species, parasitoid flies may adopt direct or indirect oviposition strategies. The ‘direct type’ females lay eggs on or, in relatively a few species, inside the host body. This review describes cues involved in host selection by tachinid parasitoids and their oviposition strategies and presents 2 case studies in more detail, focusing on Exorista larvarum and Exorista japonica. These 2 polyphagous parasitoids of Lepidoptera lay macrotype eggs directly on the host cuticle. Both species have been used as biological control agents in inoculative release against the gypsy moth Lymantria dispar in the Northern United States. Improved knowledge of the mechanisms involved in host selection and oviposition strategies may increase the possibility of eliciting oviposition by these tachinids on target lepidopterous hosts (and even artificial substrates), thus facilitating their rearing and ultimately making their exploitation as regulators of target insect pests more feasible and efficient.


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