Journal article
Day/night upper thermal limits differ within Ectatomma ruidum ant colonies
Insectes sociaux, v 65(1), pp 183-189
2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In the tropics, daily temperature fluctuations can pose physiological challenges for ectothermic organisms, and upper thermal limits may affect foraging activity over the course of the day. Variation in upper thermal limits can occur among and within species, and for social insects such as ants, within colonies. Within colonies, upper thermal limits may differ among individuals or change for an individual throughout the day. Daytime foragers of the Neotropical ant
Ectatomma ruidum
have higher critical thermal maxima (CT
max
) than nocturnal foragers, but whether these differences occur among or within colonies was not previously known. We investigated the potential mechanisms accounting for day/night variation in CT
max
of
E. ruidum
foragers by testing whether CT
max
varied among or within colonies or due to individuals within colonies acclimating to changes in temperature over a short time scale (3 h). We found within- but not among-colony differences in CT
max
on a diel cycle, and we found no evidence for among- or within-colony partitioning of foraging times by individual workers. Individuals did not acclimate to experimental manipulations of temperature, although additional experiments with more ecologically relevant temperature manipulations are needed to rule out this mechanism. In summary, we have shown that day/night differences in upper thermal limits can occur within ant colonies, but further investigation is needed to elucidate the mechanisms driving this variation.
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Details
- Title
- Day/night upper thermal limits differ within Ectatomma ruidum ant colonies
- Creators
- A. S. Nelson - University of California, IrvineT. Scott - Washington University in St. LouisM. Barczyk - Jagiellonian UniversityT. P. McGlynn - California State University, Dominguez HillsA. Avalos - University of Illinois Urbana-ChampaignE. Clifton - University of ConnecticutA. Das - University of CalcuttaA. Figueiredo - University of Missouri–St. LouisL. L. Figueroa - Cornell UniversityM. Janowiecki - Texas A&M UniversityS. Pahlke - George Washington UniversityJ. D. Rana - George Washington UniversityS. O’Donnell - Drexel University
- Publication Details
- Insectes sociaux, v 65(1), pp 183-189
- Publisher
- Springer International Publishing
- Grant note
- OISE-1130156 / National Science Foundation (http://dx.doi.org/10.13039/100000001) DGE-1321846 / National Science Foundation (US) - Graduate Research Fellowship Program
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES); Neurology
- Web of Science ID
- WOS:000423831700018
- Scopus ID
- 2-s2.0-85030870395
- Other Identifier
- 991019167813204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Entomology