Simulation-based evaluation of two insect trapping grids for delimitation surveys

Fang, Hui; Caton, Barney P.; Manoukis, Nicholas C.; Pallipparambil, Godshen R.

doi:10.1038/s41598-022-14958-5

Cited by 4 publications

(3 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We recently investigated factors affecting the performance of delimitation trapping surveys targeting localized populations for which the published designs have almost always been square grids (CDFA 2013, FAO/IAEA 2018). We found that grid shape and trap attractiveness were important factors affecting detection performance (Caton et al 2021b, Fang et al 2022) and also that many published grids were most likely oversized (Caton et al 2021a).…”

Section: Introductionmentioning

confidence: 69%

“…Survey diameters could be increased as warranted with no impact on trap numbers, whereas increasing the size of a regular grid means adding new rows of traps. Trap densities are ideally chosen to ensure acceptable P (Detection) [maximization is probably not efficient, see Fang et al (2022)]. In trap-sects, marginal cost increases from using greater densities would only come from additional supply costs and individual trap servicing times, which are probably a small proportion of the total cost.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Transect-based trapping for area-wide delimitation of insects

Caton

Fang

Pallipparambil

et al. 2023

Journal of Economic Entomology

Self Cite

View full text Add to dashboard Cite

Typical delimitation trapping survey designs for area-wide (nonlocalized) insect populations are regularly spaced grids, and alternative shapes have not been evaluated. We hypothesized that transect-based designs could give similar detection rates with significantly shorter servicing distances. We used the TrapGrid model to investigate novel “trap-sect” designs incorporating crossed, spoked, and parallel lines of traps, comparing them to a regular grid, in single survey and multiple-site scenarios. We calculated minimum servicing distances and simulated mean probabilities of detecting a pest population, judging overall performance of trap network designs using both metrics. For single sites, trap-sect designs reduced service distances by 65–89%, and most had similar detection probabilities as the regular grid. Kernel-smoothed intensity plots indicated that the best performing trap-sect designs distributed traps more fully across the area. With multiple sites (3 side by side), results depended on insect dispersal ability. All designs performed similarly in terms of detection for highly mobile insects, suggesting that designs minimizing service distances would be best for such pests. For less mobile pests the best trap-sect designs had 4–6 parallel lines, or 8 spokes, which reduced servicing distances by 33–50%. Comparisons of hypothetical trap-sect arrays to real program trap locations for 2 pests demonstrated that the novel designs reduced both trap numbers and service distances, with little differences in mean nearest trap distance to random pest locations. Trap-sect designs in delimitation surveys could reduce costs and increase program flexibility without harming the ability to detect populations.

show abstract

Section: Introductionmentioning

confidence: 69%

Section: Discussionmentioning

confidence: 99%

Transect-based trapping for area-wide delimitation of insects

Caton

Fang

Pallipparambil

et al. 2023

Journal of Economic Entomology

Self Cite

View full text Add to dashboard Cite

show abstract

“…Similarly, simulation models such as “TrapGrid” ( Manoukis et al 2014 ) can extrapolate from the decline in trap captures with distance (e.g., Manoukis et al 2015 , Manoukis and Gayle 2016 ) to estimate the temporal cumulative probability of detecting fruit fly populations in trapping grids with particular configurations ( Fig. 4b ; Fang et al 2022 ).…”

Section: Relative Trapping Effortmentioning

confidence: 99%

Review of surveillance systems for tephritid fruit fly threats in Australia, New Zealand, and the United States

Kean,

Manoukis,

Dominiak

2023

Journal of Economic Entomology

View full text Add to dashboard Cite

Many countries conduct fruit fly surveillance but, while there are guidelines, practices vary widely. This review of some countries in the Pacific region demonstrates the diversity of fruit fly surveillance practices. All utilize 3 parapheromones—trimedlure, cuelure, and methyl eugenol—to trap adult male fruit flies. Some target species are not attracted to these compounds so other attractants such as food-based lures are used in certain areas or circumstances. Lure loading and replacement cycles depend on the target species and the local climate. Malathion and dichlorvos (DDVP) are commonly used toxicants, but not in all countries, and other toxicants are being developed to replace these older-generation pesticides. Jackson and Lynfield are commonly used trap designs but newer designs such as cone and Biotrap are being adopted. Local factors such as chemical registrations and climate affect the choice of trap, lure, dispenser, toxicant, and bait concentration. These choices affect the efficacy of traps, in turn influencing optimal trap deployment in space and time. Most states now follow similar practices around trap inspection, servicing, and data handling, but these processes will be disrupted by emerging automated trap technologies. Ultimately, different practices can be attributed to the unique fruit fly risk profiles faced by each state, particularly the suite of fruit flies already present and those that threaten from nearby. Despite the diversity of approaches, international trade in fruit continues with the assurance that fruit fly surveillance practices evolve and improve according to each country’s risk profile and incursion experience.

show abstract

Pest science in Pasteur’s Quadrant

Mangel

2023

J Pest Sci

View full text Add to dashboard Cite

More than 25 years ago, Donald Stokes argued that we must move beyond the false dichotomy of basic or applied research and suggested that when considering a program of scientific research it is important to ask whether (i) the work is motivated by use and (ii) if there is a search for fundamental understanding. Giving yes/no answers to these questions allows us to characterize research more fully, replacing the “or” of “basic or applied” by a richer understanding of the process of science. Stokes proposed that research that was motivated by a consideration of use and sought fundamental understanding be called research in Pasteur’s Quadrant. One advantage of such work is that the search for fundamental understanding means that the problem-solving tools are more likely to be transferrable. After reviewing Stokes’s formulation of research, I illustrate it with examples from the control of tephritid flies and the use of insect parasitoids for biological control. Thinking about one’s work within Stokes’s framework has many advantages for individual scientists, including guidance for journal selection, how to organize and conclude papers and seminars, and the “elevator speech.” Furthermore, since research in Pasteur’s Quadrant has the characteristic of simultaneously increasing our understanding of how the world works and improving applications, it will more likely benefit the community of pest scientists.

show abstract

Simulation-based evaluation of two insect trapping grids for delimitation surveys

Cited by 4 publications

References 51 publications

Transect-based trapping for area-wide delimitation of insects

Transect-based trapping for area-wide delimitation of insects

Review of surveillance systems for tephritid fruit fly threats in Australia, New Zealand, and the United States

Pest science in Pasteur’s Quadrant

Contact Info

Product

Resources

About