Kaitlin Baudier

Kaitlin Baudier
University of Southern Mississippi | USM

PhD

About

37
Publications
4,976
Reads
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345
Citations
Introduction
Assistant Professor at the University of Southern Mississippi in the School of Biological, Environmental and Earth Sciences. Research areas include social macrophysiology, behavioral ecology, and tropical ecology.
Additional affiliations
January 2021 - present
University of Southern Mississippi
Position
  • Assistant Professor
May 2017 - January 2021
Arizona State University
Position
  • PostDoc Position
September 2012 - April 2017
Drexel University
Position
  • Research Assistant
Education
September 2012 - April 2017
Drexel University
Field of study
  • Biology
August 2007 - December 2007
Kansai Gaidai University
Field of study
  • Japanese Language
January 2006 - December 2008
Louisiana State University
Field of study
  • Biological Sciences

Publications

Publications (37)
Article
Full-text available
Models that predict organismal and population responses to climate change may be improved by considering ecological factors that affect species thermal tolerance. Species differences in microhabitat use can expose animals to diverse thermal selective environments at a given site and may cause sympatric species to evolve different thermal tolerances...
Article
Social insect nestmates often differ in thermal tolerance (the range of temperatures at which an individual functions). Worker thermal physiology can covary with body size, development, genetics and gene expression. Because colonies rely on the integration of diverse colony members, individual thermal tolerance differences can affect group performa...
Article
Full-text available
The climatic variability hypothesis (CVH) is a cornerstone of thermal ecology, predicting the evolution of wider organismal thermal tolerance ranges in more thermally variable environments. Thermal tolerance ranges depend on both upper and lower tolerance limits (critical thermal maxima [CTmax] and critical thermal minima [CTmin]), which may show d...
Article
Full-text available
Endothermic animals do not always have a single adaptive internal temperature; some species exhibit plastic homeostasis, adaptively allowing body temperature to drop when thermoregulatory costs are high. Like large-bodied endotherms, some animal societies exhibit collective thermal homeostasis. We tested for plasticity of thermoregulation in the se...
Article
Full-text available
Tests of hypotheses for the evolution of thermal physiology often rely on mean temperatures, but mounting evidence suggests geographic variation in temperature extremes is also an important predictor of species’ thermal tolerances. Although the tropics are less thermally variable than higher latitude regions, rain shadows on the leeward sides of mo...
Article
Investigations of thermally adaptive behavioral phenotypes are critical for both understanding climate as a selective force and for predicting global species distributions under climate change conditions. Cooperative nest founding is a common strategy in harsh environments for many species, and can enhance growth and competitive advantage, but whet...
Article
Army ants are frequently used as charismatic organismal representatives of collective behavior in nature, providing templates for modern engineered systems as well as continuing to drive aspirational goals for the engineered systems of the future. Most attention on army ants has been focused on the ability of groups of ants to self-assemble into ad...
Preprint
Army ants are frequently used as charismatic organismal representatives of collective behavior in nature, providing templates for modern engineered systems as well as continuing to drive aspirational goals for the engineered systems of the future. Most attention on army ants has been focused on the ability of groups of ants to self-assemble into ad...
Article
Individual heterogeneity within societies provides opportunities to test hypotheses about adaptive neural investment in the context of group cooperation. Here we explore neural investment in defense specialist soldiers of the eusocial stingless bee (Tetragonisca angustula) which are age sub-specialized on distinct defense tasks and have an overall...
Preprint
Full-text available
Individual heterogeneity within societies provides opportunities to test hypotheses about adaptive neural investment in the context of group cooperation. Here we explore neural investment in defense specialist soldiers of the eusocial stingless bee (Tetragonisca angustula) which are age sub-specialized on distinct defense tasks, and have an overall...
Article
Full-text available
Social insects face threats to the colony during the day but also at nighttime. Multiple strategies have evolved across social insect species that protect the nest and each other at night. We asked what behaviors are employed by stingless bees, Tetragonisca angustula at night. We describe two layers of defense, nightly nest closing and night guardi...
Conference Paper
Army ants are frequently used as charismatic organismal representatives of collective behavior in nature, providing templates for modern engineered systems as well as continuing to drive aspirational goals for the engineered systems of the future. Most attention on army ants has been focused on the ability of groups of ants to self-assemble into ad...
Article
Full-text available
Warfare between social groups has long been a popular topic of study among ethologists, but less well studied are the mechanisms by which interacting groups maintain peace. We report on the use of transient living walls as a mechanism by which avoidance is established between army-ant mass raids and non-prey ant species commonly encountered in the...
Article
Full-text available
Collective defense is one of the most ubiquitous behaviors performed by social groups. Because of its importance, complex societies may engage a set of defensive specialists, with physical and/or neurological attributes tuned for defense against specific invaders. These strategies must be balanced, however, with the need to flexibly respond to diff...
Article
Predicting the effects of climatic warming on social insects remains an important challenge. While warming is known to speed many rate processes, the acute effects of temperature on performance under field conditions remain poorly studied. The effects of temperature are usually nonlinear, and tropical animals have been predicted to be particularly...
Article
Task allocation is a central challenge of collective behavior in a variety of group-living species, and this is particularly the case for the allocation of social insect workers for group defense. In social insects, both benefits and considerable costs are associated with the production of specialized soldiers. We asked whether colonies mitigate co...
Article
We consider here the use of heterogeneous UAV swarms to defend a high-value target. We gain inspiration from the guarding system used by colonies of Tetragonisca angustula bees, which uses both high-cost hovering guards and low-cost standing guards to protect within-nest resources from theft by their own and other species (con- and heterospecific i...
Article
In social insects, group members can differ in thermal physiology, and these differences may affect colony function. Upper thermal tolerance limits (CTmax) generally increase with body size among and within ant species, but size effects on lower thermal tolerances (CTmin) are poorly known. To test whether CTmin co-variation with body size matched p...
Conference Paper
We consider here the use of heterogeneous UAV swarms to defend a high-value target. We gain inspiration from the guarding system used by colonies of Tetragonisca angustula bees, which uses both high-cost hovering guards and low-cost standing guards to protect within-nest resources from theft by their own and other species (con-and hetero-specific i...
Article
Social insect colonies are high-value foraging targets for insectivores, prompting the evolution of complex colony defensive adaptations as well as specialized foraging tactics in social insect predators. Predatory ants that forage on other social insects employ a diverse range of behaviors targeted at specific prey species. Here, we describe a sol...
Article
Full-text available
Previous feeding studies showed the polyalcohol erythritol was toxic when ingested by adult laboratory fruit flies (Drosophila melanogaster). We asked whether erythritol could additionally affect fly population growth either through larval toxicity or through effects on adult reproduction. Females did not avoid laying on food substrates with 1M ery...
Thesis
Full-text available
Temperature is a major abiotic factor governing organismal performance and biotic distribution patterns worldwide. How different spatial resolutions of temperature variation relate to the thermal adaptiveness of organisms living within these environments informs predictions of physiological range limitations and response to climate change. Here I u...
Article
Full-text available
Previous work showed the non-nutritive polyol sweetener Erythritol was toxic when ingested by Drosophila melanogaster (Meigen, 1930). This study assessed whether insect toxicity is a general property of polyols. Among tested compounds, toxicity was highest for erythritol. Adult fruit flies (D. melanogaster) fed erythritol had reduced longevity rela...
Article
Full-text available
Active brood-warming in army ant nests (bivouacs) is well documented for surface-dwelling Eciton burchellii and E. hamatum colonies in lowland tropical forests. However, little is known about thermoregulation by the below-ground bivouacking army ants that comprise all other species in subfamily Dorylinae. Here we report the first observations of su...
Conference Paper
Full-text available
The occurrence of active brood-warming in army ant nests (bivouacs) is well documented among surface-dwelling Eciton burchellii colonies in the lowlands, but how this species interacts with the variety of conditions experienced across its expansive range remains understudied. Even less is known about if and how thermoregulation is achieved in other...
Conference Paper
Full-text available
Temperature variation along elevational clines generates locally stable but spatially diverse temperatures in the tropics, potentially selecting for the evolution of thermally specialized animal populations. The Neotropical army ant Eciton burchellii parvispinum is distributed across a wide elevation range spanning 11°C mean annual temperature. The...
Conference Paper
Full-text available
How will different animal species respond to climate change? Will climate change have the same effects across species’ geographic ranges? Current models that address these important questions are limited by the assumption that species at a given location experience the same thermal environment, and by lack of data on geographic variation in thermal...
Conference Paper
We show that Erythritol, a non-nutritive sugar alcohol, was toxic to the fruit fly Drosophila melanogaster. Ingested erythritol decreased fruit fly longevity in a dose-dependent manner, and erythritol was ingested by flies that had free access to control (sucrose) foods in choice and CAFE studies. Erythritol was US FDA approved in 2001 and is used...
Conference Paper
As small-bodied, ecologically dominant ectotherms, ants are important models for understanding animal responses to temperature variation and climate change. We took advantage of extreme variation in body size and species habitat use among Neotropical army ants (Ecitoninae) to explore how physiology and ecology affect thermal tolerance. The relation...
Article
Full-text available
Insecticides have a variety of commercial applications including urban pest control, agricultural use to increase crop yields, and prevention of proliferation of insect-borne diseases. Many pesticides in current use are synthetic molecules such as organochlorine and organophosphate compounds. Some synthetic insecticides suffer drawbacks including h...
Conference Paper
Full-text available
As small-bodied, ecologically dominant ectotherms, ants are important models for understanding animal responses to temperature variation and climate change. We took advantage of extreme body size variation and species habitat differences among army ants (Ecitoninae) to explore how physiology and ecology affect thermal tolerance. The relationship be...
Conference Paper
Larvae of some species of ants in the subfamily Ponerinae have specilaized adhesive structures on the dorsum of the body.These adhesive structures appear to function to attach the larvae to the walls and roof of nest chambers. We show these structures vary in number, placement, and morphology. We use a recent molecular phylogeny of the Ponerinae...
Conference Paper
Full-text available
Many members of the ant subfamily Ponerinae possess in larval form a variety of specialized sticky appendages to facilitate the attaching of brood to nest chamber walls. The presence of these structures has been documented for decades, but up until now the exact mechanism by which they produce adhesion has not been fully explored. In this project,...
Conference Paper
D-Limonene is a substance derived from citrus rinds that is widely used for many different applications such as cleaning solutions or as an organic replacement for other solvents such as mineral spirits, acetone, and glycol ethers. One product that uses d-Limonene is Orange Oils XT-2000 which is currently marketed as a treatment for drywood termite...

Questions

Questions (3)
Question
I am trying to put into context an interesting and recurring behavior I've observed while studying something else. I'm curious if this is novel.
Question
I am having trouble finding sources explicitly talking about this, but get the sense that highly polymorphic species don't much occur at high latitudes. Does anyone have anecdotes or papers refuting or supporting this observation?
Question
I am looking for records of Monomorium floricola (Jerdon) in the North Eastern USA. Does anyone have any knowledge of collections from this area?

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Cited By

Projects

Projects (3)
Project
We study the complex behavioral and morphological variation associated with nest defense in the stingless bee Tetragonisca angustula, and also work on bio-inspired design projects that utilize these highly successful strategies to solve human domain problems.
Project
Understand how temperature variation among and within habitats affects behavior and ecology, using species comparisons and individual physiology measures.