Blackmargined Aphid (<i>Monellia caryella</i>(Fitch); Hemiptera: Aphididae) Honeydew Production in Pecan and Implications for Managing the Pecan Aphid Complex in Texas

Honaker, Jessica Marie; Skrivanek, Sarah; López, J. D.; Martin, Derrel L.; Lombardini, Leonardo; Grauke, L.J.; Harris, Marvin K.

doi:10.3958/059.038.0104

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…Many aphid species are economically important crop pests, and therefore, often have adequate sequence data in public archives to facilitate identification through molecular analysis ( Traugott et al 2008 , Gariepy and Messing 2012 , Zhou et al 2014 , Gómez-Marco et al 2015 , Lefort et al 2017 , Ye et al 2017b , 2017a , Zhu et al 2019 ). Further, the availability of algorithms that assign specimens to operational taxonomic units (OTUs) based on their DNA barcodes provides interim taxonomy (in the form of Barcode Index Numbers, BINs) to unidentified specimens, thereby allowing biodiversity assessments ( Ratnasingham and Hebert 2013 ) The availability of a BIN system for assessing biodiversity in a given cropping system is particularly advantageous for aphids dwelling in orchard crops, and more specifically tree nuts such as pecans ( Carya illinoinensis ), which can be considered underrepresented aphid systems ( Wood et al 1987 , Honaker et al 2013 ).…”

Section: Introductionmentioning

confidence: 99%

A molecular approach to unravel trophic interactions between parasitoids and hyperparasitoids associated with pecan aphids

Slusher,

Cottrell,

Gariepy

et al. 2024

Journal of Insect Science

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Advances in molecular ecology can overcome many challenges in understanding host–parasitoid interactions. Genetic characterization of the key-players in systems helps to confirm species and identify trophic linkages essential for ecological service delivery by biological control agents; however, relatively few agroecosystems have been explored using this approach. Pecan production consists of a large tree perennial system containing an assortment of seasonal pests and natural enemies. As a first step to characterizing host–parasitoid associations in pecan food webs, we focus on aphid species and their parasitoids. Based on DNA barcoding of field-collected and reared specimens, we confirmed the presence of 3 species of aphid, one family of primary parasitoids, and 5 species of hyperparasitoids. By applying metabarcoding to field-collected aphid mummies, we were able to identify multiple species within each aphid mummy to unravel a complex food web of 3 aphids, 2 primary parasitoids, and upward of 8 hyperparasitoid species. The results of this study demonstrate that multiple hyperparasitoid species attack a single primary parasitoid of pecan aphids, which may have negative consequences for successful aphid biological control. Although further research is needed on a broader spatial scale, our results suggest multiple species exist in this system and may suggest a complex set of interactions between parasitoids, hyperparasitoids, and the 3 aphid species. This was the first time that many of these species have been characterized and demonstrates the application of novel approaches to analyze the aphid-parasitoid food webs in pecans and other tree crop systems.

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Section: Introductionmentioning

confidence: 99%

A molecular approach to unravel trophic interactions between parasitoids and hyperparasitoids associated with pecan aphids

Slusher,

Cottrell,

Gariepy

et al. 2024

Journal of Insect Science

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Pecan phenology in Southeastern China

Han

Peng

Marshall

2018

Annals of Applied Biology

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Pecan (Carya illinoensis) is heterodicogamous, which often leads to unstable yield of its nut crops. Relating pecan orchard management to the phenological stage of the trees is the key to increasing yields; however, describing morphology alone does not lead to an orchard management system that is simple and practical. In this work, we extend the BBCH (Biologische Bundesanstalt, Bundessortenamt und Chemische Industrie) coding method to describe the morphology of the protogynous Mahan pecan cultivar over two consecutive years in southern China. Eight main growth stages, from vegetative bud dormancy to fruit harvest, were described and each phenological period was photographed. Pecan orchard management activities were listed for each stage in pecan BBCH scale to allow orchard managers to better manage their trees. This codification will facilitate breeding, conservation of genetic resources and general orchard management of this commercial crop. As well, recording the dates of various morphological stages over time will allow the influence of global climate change on pecan development to be tracked.

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Blackmargined Aphid (Monellia caryella(Fitch); Hemiptera: Aphididae) Honeydew Production in Pecan and Implications for Managing the Pecan Aphid Complex in Texas

Cited by 2 publications

References 12 publications

A molecular approach to unravel trophic interactions between parasitoids and hyperparasitoids associated with pecan aphids

A molecular approach to unravel trophic interactions between parasitoids and hyperparasitoids associated with pecan aphids

Pecan phenology in Southeastern China

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