Compatibility of Orius insidiosus (Hemiptera: Anthocoridae) with Amblyseius swirskii (Acari: Phytoseiidae) for control of Flankliniella occidentalis (Thysanoptera: Thripidae) in pepper

Compatibility of Orius insidiosus (Hemiptera: Anthocoridae) with Amblyseius swirskii (Acari: Phytoseiidae) for control of Flankliniella occidentalis (Thysanoptera: Thripidae) in pepper

Biological control programs in greenhouses increasingly resort to the release of several natural enemies simultaneously. In Uruguay, pest management in peppers is based on the release of Orius insidiosus and Amblyseius swirskii, to control Frankliniella occidentalis and Bemisia tabaci. Amblyseius sw...

Full description

Saved in:
Bibliographic Details
Published in:Agrociencia Uruguay Vol. 25; no. 2; p. e838
Main Authors: Lorenzo Larregui, Maria Eugenia, Bao, Leticia, Grille, Gabriela, Mendez, Luciana, Bonato, Oliver, Basso, César
Format: Journal Article
Language:English
Published: Facultad de Agronomía - Instituto de Nacional de Investigación Agropecuaria 01-01-2021
Universidad de la República, Facultad de Agronomía
Subjects:
AGRICULTURAL ECONOMICS & POLICY
AGRICULTURAL ENGINEERING
AGRICULTURE, DAIRY & ANIMAL SCIENCE
anthocorids
biological control
change of prey
intraguild predation
preference
anthocorids
preference
antocorídeos
control biológico
biological control
preferência
mudança de presa
change of prey
predação intra-guilda
depredación intragremial
controle biológico
intraguild predation
preferencia
antocóridos
cambio de presa
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Biological control programs in greenhouses increasingly resort to the release of several natural enemies simultaneously. In Uruguay, pest management in peppers is based on the release of Orius insidiosus and Amblyseius swirskii, to control Frankliniella occidentalis and Bemisia tabaci. Amblyseius swirskii can feed on both preys. Zoophytophagous predators not only feed on pests or plant food, but also on natural enemies with which they share prey (intraguild predation). Hence, the combined release of generalist predators could have a negative result in the control of the target pest. Thus, it was important to evaluate the compatibility of O. insidiosus and A. swirskii as predators of F. occidentalis. Studies carried out at Petri dishes level assessed: (1) the effect of the density and the composition of the prey on their predation by O. insidiosus, (2) the change of prey by O. insidiosus and (3) the effect of the genus of O. insidiosus on prey preference. Results show that if the relative densities of F. occidentalis and A. swirskii varied, O. insidiosus always changed to the most abundant prey. Male and female O. insidiosus preferred nymphs of F. occidentalis over A. swirskii, and females killed more prey than males. Since O. insidiosus fed on A. swirskii, it is advisable to be cautious when combining anthocorids and phytoseid mites for the F. occidentalis control. Studies at greenhouse will be necessary to clarify the final effect of both predators.
ISSN:2730-5066
2730-5066
DOI:10.31285/AGRO.25.838