Natural parasitism of Diaphorina citri Kuwayama (Hemiptera, Psyllidae) nymphs by Tamarixia radiata Waterston (Hymenoptera, Eulophidae) in São Paulo orange groves

Paiva, Paulo Eduardo Branco; Parra, José Roberto Postali

doi:10.1590/s0085-56262012000400016

Cited by 15 publications

(5 citation statements)

References 20 publications

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“…Results differing from those of the present study were reported by Paiva & Parra (2012) in field conditions, with respect to the 4 citrus varieties most commonly planted in São Paulo. They observed the highest parasitism on Hamlin (35.6%), followed by Pêra (19.2%), Valencia (8.6%), and Natal (7.3%).…”

Section: Choice Behavior Of T Radiata For D Citri Nymphs Reared On Four Citrus Varieties (Free-choice Test)contrasting

confidence: 99%

Can the Choice Behavior and Fitness ofTamarixia radiata(Hymenoptera: Eulophidae) be Affected by the Citrus (Sapindales: Rutaceae) Variety Used to Rear the Asian Citrus Psyllid (Hemiptera: Liviidae)?

Alves

Vieira

Diniz

et al. 2016

Florida Entomologist

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Section: Choice Behavior Of T Radiata For D Citri Nymphs Reared On Four Citrus Varieties (Free-choice Test)contrasting

confidence: 99%

Can the Choice Behavior and Fitness ofTamarixia radiata(Hymenoptera: Eulophidae) be Affected by the Citrus (Sapindales: Rutaceae) Variety Used to Rear the Asian Citrus Psyllid (Hemiptera: Liviidae)?

Alves

Vieira

Diniz

et al. 2016

Florida Entomologist

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“…In addition to predators, adult parasitoids were aggregated in a distinct category, and were excluded from multivariate analyses. We did not assess parasitism rate and did not identify adults to taxonomic levels such as family, thus, even though many parasitoids can have generation times of several days (e.g., Paiva & Parra, ), we cannot say confidently that the adult parasitoid population represents actual parasitism rates. As a result, including parasitoids with predators may bias potential associations between trophic levels.…”

Section: Methodsmentioning

confidence: 99%

Complex indirect effects of epiphytic bromeliads on the invertebrate food webs of their support tree

2019

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Ecosystem engineers are species that affect others through the provision of habitat rather than consumptive resources. The extent to which ecosystem engineers can indirectly affect entire food webs, however, is poorly understood. Epiphytic tank bromeliads (Bromeliaceae) are ecosystem engineers that are common throughout the Neotropics, and are associated with a variety of predatory arthropods. Here, we examine if bromeliads, by increasing predator densities, indirectly benefit their support tree through reduction in herbivorous insects and leaf damage. We observed and manipulated bromeliad densities in Costa Rican orange orchards, and measured impacts on leaf damage and arboreal and bromeliad invertebrate communities in two different seasons. Our results show that bromeliads are associated with predatory and herbivorous invertebrates but not leaf damage. Bromeliads were correlated with increased densities of their associated predators, especially ants and hunting spiders, but we could not confirm a causal link. Associations with bromeliads changed over time, with seasonal shifts interfering with responses to our manipulations. Bromeliads had a reduced association with predators in the dry season. Moreover, a null association between bromeliads and herbivorous invertebrates in the dry season unexpectedly became positive in the wet season. In summary, we have only limited evidence that bromeliads indirectly promote the top‐down control of arboreal herbivores; instead, our manipulations suggest that bromeliads increase herbivore densities in the wet season. This research suggests that although bromeliads may act as ecosystem engineers, indirectly influencing the invertebrate food web on support trees, their effects are trophically complex and seasonally dependent. Abstract in Spanish is available with online material.

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“…Females normally lay one egg per nymph and can parasitize over 100 individuals during their lifespan (Chen & Stansly, 2014). Parasitism rates of 50% have been observed in some locations in Florida, whereas Sao Paulo and Puerto Rico have reported >70% parasitism (Pluke et al., 2008; Qureshi et al., 2009; Paiva & Parra, 2012).…”

Section: Introductionmentioning

confidence: 99%

Topical and field‐tested residual effects of globally used insecticides on the parasitoid Tamarixia radiata released against the Asian citrus psyllid, Diaphorina citri

Rugno,

Qureshi

2023

Entomologia Exp Applicata

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Tamarixia radiata (Waterston) (Hymenoptera: Eulophidae) is the key parasitoid of the Asian citrus psyllid (ACP), Diaphorina citri Kuwayama (Hemiptera: Liviidae), in several citrus‐producing regions of the world. Chemical control is common to suppress ACP. Insecticides from globally used classes of insecticides for controlling ACP were tested on its primary parasitoid, T. radiata. Evaluations included dose–response of dimethoate, fenpropathrin, and imidacloprid in a topical application and lethal and sublethal effects from residues of imidacloprid, fenpropathrin, horticultural mineral oil (HMO), pyrethrin, and spirotetramat at 1, 3, and 7 days after application (DAA) of sprays on citrus trees in the orchard. The parasitism potential of the females that survived insecticide exposure was evaluated on untreated nymphs of ACP developing on citrus shoots and untreated parasitoid females were evaluated on nymphs treated with insecticides. In the topical application, imidacloprid was 8× more toxic to T. radiata than dimethoate and fenpropathrin. The lethal effect of the residues from imidacloprid and fenpropathrin sprays was more detrimental than other insecticides. Parasitoid mortality from 1‐ to 3‐day‐old residues averaged 90–96% for imidacloprid, 83–94% for fenpropathrin, 38–77% for pyrethrin, 43–44% for HMO, and 17–33% for spirotetramat. Parasitism by females that survived insecticide exposure was reduced by 71–88% from fenpropathrin, 28–59% from pyrethrin, 31–55% from imidacloprid, 44–4% from spirotetramat, and 39–11% from HMO compared to untreated females. The lethal and sublethal effects of all insecticides on T. radiata were significantly reduced at 7 DAA, suggesting a lower impact on its establishment and performance if releases are made after a week from spray application.

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Natural parasitism of Diaphorina citri Kuwayama (Hemiptera, Psyllidae) nymphs by Tamarixia radiata Waterston (Hymenoptera, Eulophidae) in São Paulo orange groves

Cited by 15 publications

References 20 publications

Can the Choice Behavior and Fitness ofTamarixia radiata(Hymenoptera: Eulophidae) be Affected by the Citrus (Sapindales: Rutaceae) Variety Used to Rear the Asian Citrus Psyllid (Hemiptera: Liviidae)?

Can the Choice Behavior and Fitness ofTamarixia radiata(Hymenoptera: Eulophidae) be Affected by the Citrus (Sapindales: Rutaceae) Variety Used to Rear the Asian Citrus Psyllid (Hemiptera: Liviidae)?

Complex indirect effects of epiphytic bromeliads on the invertebrate food webs of their support tree

Topical and field‐tested residual effects of globally used insecticides on the parasitoid Tamarixia radiata released against the Asian citrus psyllid, Diaphorina citri

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