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Pogo Foraging - Final Data File .xlsx (67.37 kB)

Data from: Thermal tolerance regulates foraging behavior of ants

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posted on 2024-02-21, 18:54 authored by Diane V. Roeder, Anna W. Paraskevopoulos, Karl RoederKarl Roeder

Data files for manuscript titled "Thermal tolerance regulates foraging behavior of ants".

Metadata is contained within excel file that describes all variables for each tab.

Abstract from paper:

  1. Theory suggests that performance increases with temperature up to an optimization point before rapidly decreasing as an animal approaches its upper thermal limit. Here we use the red harvester ant, Pogonomyrmex barbatus, to test predictions about how daily temperature fluctuations and thermal tolerance combine to influence one metric of performance — foraging.
  2. Over two years, we tracked 322 foraging trips from 15 colonies in a mixed grass prairie of southwestern Oklahoma. During each trip, we measured surface temperature, distance, time, worker mass, seed mass, and foraging tempo (i.e. running speed). To assess P. barbatus heat tolerance, we measured CTmax and knock-down resistance of field-collected workers in the lab.
  3. Trip time, but not distance, decreased with increasing temperature, resulting in an increased foraging tempo as ants neared their CTmax of 50°C. Knock-down resistance trials confirmed that 50°C is an upper thermal limit, as individuals showed decreasing survival from 100% at 45°C to 0% at 50°C. Worker size and collected seed size were unrelated to temperature.
  4. Our results highlight how daily temperature fluctuations drive activity, not only by limiting foraging but also by increasing foraging rates near the thermal limit. If temperatures continue to increase, the foraging ability of this and similar species may be restricted to an ever-narrowing window with effects potentially extending to the surrounding community.

This research was supported by funding from Cameron University to Diane V. Roeder.

Resources in this dataset:

  • Resource Title: Data for "Thermal tolerance regulates foraging behavior of ants".

    File Name: Pogo Foraging - Final Data File .xlsx

    Resource Description: Excel file with 4 tabs: Metadata, Behavior, CTmax, and Knock-down resistance.




Data contact name

Roeder, Karl

Data contact email


Ag Data Commons

Temporal Extent Start Date


Temporal Extent End Date



  • Not specified

Geographic Coverage


Geographic location - description

Wichita Mountains Wildlife Refuge, Oklahoma, USA

ISO Topic Category

  • biota

National Agricultural Library Thesaurus terms

heat tolerance; foraging; animals; Pogonomyrmex barbatus; prediction; mixed-grass prairies; Oklahoma; surface temperature; seed weight; seed size; body size

Primary article PubAg Handle

Pending citation

  • No

Public Access Level

  • Public

Preferred dataset citation

Roeder, Diane V.; Paraskevopoulos, Anna W.; Roeder, Karl A. (2022). Data from: Thermal tolerance regulates foraging behavior of ants. Ag Data Commons.

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