Sampling and interpretation of psyllid nymph counts in potatoes

Martini, Xavier; Seibert, Shawn; Prager, Sean M.; Nansen, Christian

doi:10.1111/j.1570-7458.2012.01235.x

Cited by 15 publications

(17 citation statements)

References 26 publications

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“…In potato plants, the top portion of plants consists of newer growth, and multiple studies have demonstrated that TPPs are more prevalent in the top portion of potato plants (Butler and Trumble 2012b, Martini et al 2012). Similarly, the Asian citrus psyllid prefers new shoots to older leaves (Hall et al 2012, GraftonCardwell et al 2013, which is not reßected in stratiÞcation but does inßuence where TPPs are located within plants.…”

Section: Discussionmentioning

confidence: 94%

The Influence of Maturity and Variety of Potato Plants on Oviposition and Probing ofBactericera cockerelli(Hemiptera: Triozidae)

Prager¹,

Lewis

Michels

et al. 2014

Environ Entomol

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The ecological theory on host plant choice by herbivores suggests that mothers should choose plants that will maximize their offspring's success. In annual host plants, physiology (and therefore host suitability) is sometimes influenced by maturity and growth stage, which may influence female choice. Potato plants were grown under greenhouse conditions and used in choice and no-choice bioassays to determine the effect of plant maturity and variety on oviposition and number of stylet sheaths (which approximate stylet insertions) by tomato/potato psyllids. No-choice bioassays suggested that maturity (time since planting) did not influence oviposition behavior, but oviposition varied significantly among potato plant varieties. There was a significant effect of both maturity and variety on the number of stylet sheaths, which peak toward the middle of the growing season. We also examined tomato/potato psyllid responses to plants grown in a commercial field and again found no effect on oviposition but differences in stylet sheaths. The results suggest that differential susceptibility to zebra chip disease may be associated with unequal feeding rates. Future studies should examine whether the maturity of plants influences larval fitness. Finally, potato variety has an influence on both oviposition and "probing," and has implications for management strategies and the development of resistant potato varieties.

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Section: Discussionmentioning

confidence: 94%

The Influence of Maturity and Variety of Potato Plants on Oviposition and Probing ofBactericera cockerelli(Hemiptera: Triozidae)

Prager¹,

Lewis

Michels

et al. 2014

Environ Entomol

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“…However, if dispersal centers are located within an agricultural field, the bell-shaped curve distribution of insects will result in lower population density along field edges and higher population density in the interior. Such a counter-edge effect distribution pattern has been noted in nymphs of potato psyllid, Bactericera cockerelli Sulc (Hemiptera: Triozidae), in commercial fields of potato (Martini et al 2012). …”

Section: Simple Diffusion Modelmentioning

confidence: 99%

Edge-biased distributions of insects. A review

Nguyen

Nansen

2018

Agron. Sustain. Dev.

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Spatial ecology includes research into factors responsible for observed distribution patterns of organisms. Moreover, the spatial distribution of an animal at a given spatial scale and in a given landscape may provide valuable insight into its host preference, fitness, evolutionary adaptation potential, and response to resource limitations. In agro-ecology, in-depth understanding of spatial distributions of insects is of particular importance when the goals are to (1) promote establishment and persistence of certain food webs, (2) maximize performance of pollinators and natural enemies, and (3) develop precision-targeted monitoring and detection of emerging outbreaks of herbivorous pests. In this article, we review and discuss a spatial phenomenon that is widespread among insect species across agricultural systems and across spatial scales-they tend to show "edge-biased distributions" (spatial distribution patterns show distinct "edge effects"). In the conservation and biodiversity literature, this phenomenon has been studied and reviewed intensively in the context of how landscape fragmentation affects species diversity. However, possible explanations of, and also implications of, edge-biased distributions of insects in agricultural systems have not received the same attention. Our review suggests that (1) mathematical modeling approaches can partially explain edge-biased distributions and (2) abiotic factors, crop vegetation traits, and environmental parameters are factors that are likely responsible for this phenomenon. However, we argue that more research, especially experimental research, is needed to increase the current understanding of how and why edge-biased distributions of insects are so widespread. We argue that the fact that many insect pests show edge-biased distribution patterns may be used to optimize both pest monitoring practices and precision targeting of pesticide applications and releases of natural enemies.

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“…This is the only sampling plan published for B. cockerelli on any plant. However, it is known that both host plant and plant variety influence life history parameters of B. cockerelli . Consequently, crop‐specific sampling plans and spatial analysis are necessary for optimal management of these pests.…”

Section: Introductionmentioning

confidence: 99%