Cited by 16Insect-Plant Interactions and ControlHemiptera Insect StudiesInsect Resistance and Genetics

Natural enemy impacts on B emisia tabaci ( MEAM1 ) dominate plant quality effects in the cotton system

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ASIIMWE, PETER, ELLSWORTH, PETER C., NARANJO, STEVEN E.·2016·Ecological Entomology

Abstract

1. Plant quality (bottom‐up effects) and natural enemies (top‐down effects) affect herbivore performance. Furthermore, plant quality can also influence the impact of natural enemies. 2. Lower plant quality through reduced irrigation increased the abundance of the cryptic species from the B emisia tabaci complex [hereafter B . tabaci Middle East Asia Minor 1 (MEAM1)], but not its natural enemies on cotton. It was therefore predicted that lower plant quality would diminish the impact of natural enemies in regulating this herbivore. 3. Over three cotton seasons, plant quality was manipulated via differential irrigation and natural enemy abundance with insecticides. Life tables were used to evaluate the impact of these factors on mortality of immature B . tabaci ( MEAM1 ) over nine generations. 4. Mortality of B . tabaci ( MEAM1 ) was consistently affected by natural enemies but not by plant quality. This pattern was driven by high levels of sucking predation, which was the primary (key) factor associated with changes in immature mortality across all irrigation and natural enemy treatments. Dislodgement (chewing predation and weather) and parasitism contributed as key factors in some cases. Analyses also showed that elimination of sucking predation and dislodgement would have the greatest effect on overall mortality. 5. The top‐down effects of natural enemies had dominant effects on populations of B . tabaci ( MEAM1 ) relative to the bottom‐up effects of plant quality. Effects were primarily due to native generalist arthropod predators and not more host‐specific aphelinid parasitoids. The findings of this study demonstrate the important role of arthropod predators in population suppression and validate the importance of conservation biological control in this system for effective pest control.

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Crossref · 10.1111/een.12340

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  • Extensive experimental work documented the role of natural enemies generally and their conservation specifically in the suppression and economic management of B. tabaci.

    “Extensive experimental work documented the role of natural enemies generally and their conservation specifically in the suppression and economic management of B. tabaci (Asiimwe et al., 2016;Naranjo andEllsworth, 2005, 2009b;Vandervoet et al., 2018).”

    From Genetically engineered crops help support conservation biological control (2019) · cites this paper as Asiimwe et al., 2016

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Authors
ASIIMWE, P., ELLSWORTH, P. C., & NARANJO, S. E.
Affiliations
  • University of Arizona (US)
  • Agricultural Research Service (US)
Corresponding author
NARANJO, STEVEN E.
Venue
Ecological Entomology
Publisher
Wiley
Published
2016-07-14
Volume
41
Issue
5
Pages
642-652
ISSN
  • 0307-6946 (ISSN-L)
  • 1365-2311
OpenAlex
W2472074603
Cited by
16
References
85
Citations by year
2024: 2 · 2023: 3 · 2022: 1 · 2021: 2 · 2020: 2 · 2019: 2 · 2018: 3 · 2017: 1
FWCI
2.16
Type
journal article
Language
en
Open access
Locations
  • Ecological Entomology (publishedVersion)
  • UA Campus Repository (The University of Arizona) (acceptedVersion, public-domain)
Funders
Cotton Incorporated
Topics
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect-Plant Interactions and Control
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Hemiptera Insect Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Insect Resistance and Genetics
Keywords
Bemisia tabaci MEAM1, whitefly, natural enemies, plant quality, bottom-up effects, top-down effects, cotton, irrigation, dislodgement, parasitism, predatory arthropods, aphelinid parasitoids, insecticide effects, immature mortality, life tables, conservation biological control, pest population suppression

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