Temperature Preference in the annual kilifish Austrofundulus limnaeus
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The objective of this study was to determine the thermal preference of the annual killifish, Austrofundulus limnaeus after acclimation to a constant temperature of 26°C for 3 weeks. The thermal preference of eighteen fish was determined using a thermal gradient and video recognition software over a twenty-four hour period. Preliminary analysis of the data indicates that the male fish have a mean thermal preference of 26.61°C (S.D. 2.68, n=4), and the female fish have a mean thermal preference of 29.55°C (S.D. 1.08, n=3). We are currently investigating the thermal preference of these same fish after exposure to a fluctuating thermal regime to assess any difference in behavior induced by fluctuating versus constant acclimation regimes. This work was supported by NSF grant IOB-0344578 to JEP.
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The objective of this study was to determine the thermal preference of the annual killifish, Austrofundulus limnaeus after acclimation to a constant temperature of 26°C for 3 weeks. The thermal preference of eighteen fish was determined using a thermal gradient and video recognition software over a twenty-four hour period. Preliminary analysis of the data indicates that the male fish have a mean thermal preference of 26.61°C (S.D. 2.68, n=4), and the female fish have a mean thermal preference of 29.55°C (S.D. 1.08, n=3). We are currently investigating the thermal preference of these same fish after exposure to a fluctuating thermal regime to assess any difference in behavior induced by fluctuating versus constant acclimation regimes. This work was supported by NSF grant IOB-0344578 to JEP.
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