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Thesis
PHYSIOLOGICAL ADAPTATIONS OF DIAMOND KILLIFISH (ADINIA XENICA) TO SURVIVE TEMPERATURE EXTREMES
University of West Florida
Master of Science (MS), University of West Florida
2016
Abstract
Diamond killifish, Adinia xenica, is a species of shallow saltmarsh fish subject to rapid temperature increases over short periods of time as well as high and low temperature extremes; however, little is known about this organism's thermal ecology. Chronic thermal maxima and minima were measured in addition to critical thermal maxima and minima (CTmaxima/minima) at four acclimation temperatures in order to construct a thermal polygon and quantify the thermal niche of diamond killifish. Fish acclimated to temperatures of 10.6, 16.7, 26.1, and 35.2oC demonstrated CTmaxima of 38.6, 38.7, 42.0, and 43.8oC, and CTminima of 0.7, 1.7, 4.6, and 9.4oC respectively, and the resulting thermal polygon had an area of 1320.7oC2. Fish acclimated to 10.6, 16.8, and 26.0 oC were plunged to increased temperatures of 16.8, 26.0, and 35.6 oC respectively, and acclimation rates were measured by recording CTmaxima values after 0, 2, 5, 10, 15, 20, and 25 days. The CTmaxima of reciprocal transfers were also recorded, and resultant data were used to construct second-order polynomial regressions to model acclimation from low to high and high to low temperature changes. This fish demonstrates acclimation patterns much like Cyprinodon dearborni, with most tolerance gained or lost within five days post-transfer.
Details
- Title
- PHYSIOLOGICAL ADAPTATIONS OF DIAMOND KILLIFISH (ADINIA XENICA) TO SURVIVE TEMPERATURE EXTREMES
- Resource Type
- Thesis
- Publisher
- University of West Florida
- Format
- text
- Identifiers
- 99380090731506600
- Academic Unit
- Biology
- Language
- English
- Awarding Institution
- University of West Florida; Master of Science (MS)
- Theses and Dissertations
- Master of Science (MS), University of West Florida