Journal
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
Volume 310, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.agee.2021.107299
Keywords
Food-for-protection; Invasive; Linepithema humile; Diaphorini citri; Edge effect; Citrus
Funding
- Citrus Research Board [19-5500-501C]
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The Argentine ant, an invasive species in the United States, disrupts natural ecosystems by displacing native ant species and associating with phloem-feeding insects. The presence of another invasive pest, Asian Citrus psyllid, as well as edge complexity, can impact ant activity rates and species richness within citrus groves. Understanding the spatial patterns of these pests can aid in future management practices for controlling their populations.
The Argentine ant, Linepithema humile, is an invasive ant species well established throughout subtropical climates in the United States. The Argentine ant disrupts natural ecosystems by displacing native ant species and associating with phloem-feeding insects, which they protect from natural enemies in exchange for honeydew excreted by the phloem-feeders. Thus, interactions between these ants and phloem-feeders can be an issue of critical importance in agroecosystems. In this study, we aimed to determine whether the presence or absence of another invasive pest, Asian Citrus psyllid (ACP), Diaphorina citri, adjacent habitat types, and edge complexity impact the species richness, activity, and distribution of ants including the Argentine ant within citrus groves in southern California. When ACP were present and edge complexity was higher, ant activity rates were higher, yet we observed a decline in total ant species richness. Surrounding habitat type had no effect on ant activity or total ant species richness. Understanding the spatial patterns of both the Argentine ant and ACP can aid future management practices for controlling both Argentine ants and Asian citrus psyllid populations.
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