Work

Prey Preference of Neoseiulus californicus (McGregor) (Mesostigmata: Phytoseiidae) When Offered Two Strawberry Pests, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) and Tetranychus urticae Koch (Acari: Tetranychidae)

Year: 2025

Type: article

Abstract: Mites and thrips often infest strawberry crops across the globe, with devastating outcomes for growers. In fact, Tetranychus urticae Koch and Scirtothrips dorsalis Hood are major pests of strawberries in Florida, USA, often infesting plants at the same time. Chemical control is ineffective because both pests have developed resistance to many pesticides; therefore, many growers are presently utilizing predatory mites. Currently, Amblyseius swirskii Anthis-Henriot is released for S. dorsalis and Phytoseiulus persimilis Athias-Henriot for T. urticae, but this dual-release strategy is costly and can reduce effectiveness since A. swirskii can prey on P. persimilis. This study evaluated whether Neoseiulus californicus (McGregor) could provide a single practical alternative for managing both pests. We assessed its feeding preference in laboratory using no-choice and choice tests where an adult predator was offered different life stages of T. urticae and larvae of S. dorsalis. Results showed that in no-choice tests, N. californicus consumed more T. urticae eggs compared to T. urticae adults. Also, S. dorsalis larvae and T. urticae deutonymphs were consumed in similar proportions. In choice tests, feeding shifted toward mobile prey with higher consumption of S. dorsalis larvae and T. urticae deutonymphs and adults. These results demonstrate that N. californicus is a flexible predator with potential to control both pests and should be investigated further for its potential as a cost-effective tool in strawberry pest management.

Source: Insects

DOI: 10.3390/insects16111077

Authors: Allan Busuulwa, Abigail Campos Gutiérrez, Sriyanka Lahiri

Institutions: University of Florida, Earth University

Language: English

Topic: Insect-Plant Interactions and Control

Subfield: Insect Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: gold

Estimated APC paid: $3,137