Relative dispersal ability of a key agricultural pest and its predators in an annual agroecosystem

Sivakoff, Frances S.; Rosenheim, Jay A.; Hagler, James R.

doi:10.1016/j.biocontrol.2012.09.008

Cited by 57 publications

(48 citation statements)

References 49 publications

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“…; Sivakoff et al. ). However, both the amount and concentration of protein(s) used in these studies were arbitrarily selected and not determined by testing in the field.…”

Section: Discussionmentioning

confidence: 98%

Development of a standardized protein immunomarking protocol for insect mark–capture dispersal research

Hagler

Naranjo

Machtley

et al. 2014

J Applied Entomology

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A field study was conducted to test the marking efficiency of broadcast spray applications of protein marks on stationary (represented by cadavers) and free‐roaming lady beetles Hippodamia convergens Guérin‐Méneville that were strategically placed in blooming alfalfa plots. The marks tested included three different concentrations of egg albumin from chicken egg white, casein from bovine milk and trypsin inhibitor from soy milk. The cadaver and free‐roaming beetle treatments served to measure the acquisition and retention of each protein treatment regime by direct contact with the spray solution and by residual contact with protein‐marked residue on alfalfa, respectively. In addition, the vertical distribution of marking efficacy was determined by sampling alfalfa plant tissue and beetle cadavers that were located on the upper and lower portion of the plant canopy. The data indicated that the backpack spray apparatus was very effective at uniformly administering the various protein marks, regardless of the concentration, throughout the entire plant canopy. Also, the free‐roaming beetles readily self‐marked by contact exposure to protein‐treated plants. We also identified concentrations of each protein type that will mark about 90% of the resident beetle population. Moreover, if a mark–capture‐type study only requires two unique protein marks, we determined that concentrations of 25% for egg white and 100% for bovine milk could be used to mark 98% of the population. Our results provide a significant step towards standardizing protein immunomarking protocols for insect mark–capture dispersal research. In addition, we identify several areas of research that are needed to further standardize the protein mark–capture procedure.

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“…; Sivakoff et al. ). However, both the amount and concentration of protein(s) used in these studies were arbitrarily selected and not determined by testing in the field.…”

Section: Discussionmentioning

confidence: 98%

Development of a standardized protein immunomarking protocol for insect mark–capture dispersal research

Hagler

Naranjo

Machtley

et al. 2014

J Applied Entomology

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“…Settle et al, 1996). Theory suggests that the timing of natural enemy arrival in crops can be influenced by the distance between the crop and source habitat (Bianchi et al, 2009), and the dispersal ability of natural enemies relative to that of the pests (Sivakoff et al, 2012). This implies that pest populations in crops far from natural enemy source habitats have an increased time window for unchecked build-up compared to crops near source habitats (Ekbom et al, 1992;Bianchi et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Early-season movement dynamics of phytophagous pest and natural enemies across a native vegetation-crop ecotone

Macfadyen

Hopkinson²,

Parry

et al. 2015

Agriculture, Ecosystems & Environment

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A B S T R A C TThere is limited understanding about how insect movement patterns are influenced by landscape features, and how landscapes can be managed to suppress pest phytophage populations in crops. Theory suggests that the relative timing of pest and natural enemy arrival in crops may influence pest suppression. However, there is a lack of data to substantiate this claim. We investigate the movement patterns of insects from native vegetation (NV) and discuss the implications of these patterns for pest control services. Using bi-directional interception traps we quantified the number of insects crossing an NV/crop ecotone relative to a control crop/crop interface in two agricultural regions early in the growing season. We used these data to infer patterns of movement and net flux. At the community-level, insect movement patterns were influenced by ecotone in two out of three years by region combinations. At the functional-group level, pests and parasitoids showed similar movement patterns from NV very soon after crop emergence. However, movement across the control interface increased towards the end of the earlyseason sampling period. Predators consistently moved more often from NV into crops than vice versa, even after crop emergence. Not all species showed a significant response to ecotone, however when a response was detected, these species showed similar patterns between the two regions. Our results highlight the importance of NV for the recruitment of natural enemies for early season crop immigration that may be potentially important for pest suppression. However, NV was also associated with crop immigration by some pest species. Hence, NV offers both opportunities and risks for pest management. The development of targeted NV management may reduce the risk of crop immigration by pests, but not of natural enemies.Crown

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“…Unlike insects with similar geographic distributions showing panmictic populations, such as Ostrinia nubilalis (Hü bner) and Helicoverpa zea (Boddie, 1850) (Krumm et al 2008, Groot et al 2011, the relatively limited dispersal ability of cotton ßeahop-pers may also explain the genetic differentiation we have observed. Future studies should look into the dispersal behavior and potential of cotton ßeahopper within cotton Þelds and at the landscape level using available markÐrecapture techniques as have been implemented in several other insect systems (Hagler and Jackson 2001, Russell et al 2005, Sivakoff et al 2012. Such information along with the results from this study should allow us to combine data on physical movement and gene ßow of cotton ßeahopper populations to better understand the structuring of genetic variation and its implications in the management of this pest.…”

Section: Discussionmentioning

confidence: 93%

Population Genetic Structure of <I>Pseudatomoscelis seriatus</I> (Hemiptera: Miridae) in the Cotton-Growing Regions of the United States

Barman¹,

Sansone

Parajulee³

et al. 2013

jnl. econ. entom.

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The cotton fleahopper, Pseudatomoscelis seriatus (Reuter) (Hemiptera: Miridae) is an economically important insect pest of cotton in the United States. However, reports of cotton fleahopper infestation and its management in cotton fields are restricted primarily to Texas, Oklahoma, and Arkansas. The objective of this study was to understand the genetic diversity of cotton fleahopper populations infesting cotton in the cotton-growing areas of the United States. Amplified fragment length polymorphism markers were used to detect genetic diversity and to characterize geographic genotypes across the distribution of the cotton fleahopper in the United States. We used 172 individuals and 559 amplified fragment length polymorphism loci in this study and found significant, but low, level of genetic differentiation among geographic populations (F(ST) = 0.02; P < 0.0001). Molecular fingerprints of cotton fleahopper populations were partitioned into three broad regional genetic populations with a western, central, and eastern distribution. The western (Arizona) and eastern (Florida, Georgia, South Carolina, and North Carolina) populations are genetically distinct, whereas the central (Texas, Oklahoma, Arkansas, Mississippi, Louisiana, and Alabama) population represents an admixed population, which include both western and eastern populations. These results suggest considerable gene flow among the populations within regions but restricted gene flow among populations from eastern and western region.

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Relative dispersal ability of a key agricultural pest and its predators in an annual agroecosystem

Cited by 57 publications

References 49 publications

Development of a standardized protein immunomarking protocol for insect mark–capture dispersal research

Development of a standardized protein immunomarking protocol for insect mark–capture dispersal research

Early-season movement dynamics of phytophagous pest and natural enemies across a native vegetation-crop ecotone

Population Genetic Structure of <I>Pseudatomoscelis seriatus</I> (Hemiptera: Miridae) in the Cotton-Growing Regions of the United States

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