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Toure MW, Reader SM. Colour biases in learned foraging preferences in Trinidadian guppies. Ethology 2021. [DOI: 10.1111/eth.13237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Wyatt Toure
- Department of Biology McGill University Montreal QC Canada
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Liebgold EB, Carleton KL. The Right Light: Tiger Salamander Capture Rates and Spectral Sensitivity. WILDLIFE SOC B 2020. [DOI: 10.1002/wsb.1058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Eric B. Liebgold
- Department of Biological SciencesSalisbury University Salisbury MD 21801 USA
| | - Karen L. Carleton
- Department of BiologyUniversity of Maryland College Park MD 20742 USA
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Kolluru GR, Walz J, Hanninen AF, Downey K, Kalbach B, Gupta S, Earley RL. Exploring behavioral and hormonal flexibility across light environments in guppies from low-predation populations. BEHAVIOUR 2015. [DOI: 10.1163/1568539x-00003264] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Phenotypic flexibility is essential for organisms to respond to changing environments. Guppies experience light environments that alter their visibility to conspecifics and predators. We used guppies from populations with low rates of predation by fish, but which may be subject to avian predators, to test the hypotheses that conspicuous behaviors and the androgens that mediate them are reduced under high light, and that cortisol levels are increased under high light because the perceived risk is stressful. We found reduced courtship, potentially driven by the reduced female response to courtship, under high light. Aggression and testosterone levels were higher in the absence of females. We found elevated androgen and decreased cortisol levels following social interactions, but no relationship between hormones and behavior, and no influence of light level on hormones. We forward explanations for these results and advocate understanding the flexible response to light environments in a range of guppy populations.
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Affiliation(s)
- Gita R. Kolluru
- aBiological Sciences Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA
| | - Julia Walz
- aBiological Sciences Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA
| | - Amanda F. Hanninen
- bDepartment of Biological Sciences, University of Alabama, Tuscaloosa, AL, USA
- cDepartment of Biology, University of Virginia, Charlottesville, VA, USA
| | - Kate Downey
- aBiological Sciences Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA
| | - Brandy Kalbach
- aBiological Sciences Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA
| | - Shelly Gupta
- aBiological Sciences Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA
| | - Ryan L. Earley
- bDepartment of Biological Sciences, University of Alabama, Tuscaloosa, AL, USA
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