The effect of relative humidity on photoresponse in sympatric species of Drosophila: Short term exposure to desiccating environments |
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| Institution: | 1. Department of Biological Sciences, Wright State University, Dayton, OH 45435 U.S.A.;2. City of Hampton Public Works Operations, 419 N. Armistead Avenue, Hampton, VA 23669, U.S.A.;1. Laboratory of Functional Lipidomics, Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates;2. Department of Neuroscience, Physiology & Pharmacology, University College London, London, United Kingdom;3. Departments of Physiology, College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates;4. Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, CA 92866, USA;1. Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan Province, PR China;2. State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, 450052, Henan Province, PR China;1. Bio-Imaging Lab, Department of Biomedical Sciences, University of Antwerp, 2610, Antwerp, Belgium;2. Centre of Biosciences, Institute of Animal Biochemistry and Genetics, Slovak Academy of Sciences, Bratislava, Slovakia;1. Neurobiology Division, Medical Research Council (MRC) Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 OQH, UK;1. Department of Animal Bio-Science, Faculty of Bio-Science, Nagahama Institute of Bio-Science and Technology, 1266 Tamura-cho, Nagahama-shi, Shiga 526-0829, Japan;2. Division of Biophysics and Neurobiology, Department of Molecular & Cellular Physiology, National Institute for Physiological Sciences, Nishigohnaka 38, Myodaiji, Okazaki, Aichi 444-8585, Japan;3. Department of Physiological Sciences, School of Life Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama, Kanagawa 240-0155, Japan |
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| Abstract: | Photoresponses of isofemale strains of sympatric sibling species, Drosophila pseudoobscura and D. persimilis from MacDonald Ranch, California and D. pseudoobscura and D. miranda from Mather, California were compared at relative humidities of 95, 50 and 5% for a period of 30 min. The sympatric species could be distinguished behaviourally by their responses at the three humidities. Although the average photoresponses of all four populations were negative, D. pseudoobscura was significantly more photonegative than its sibling sympatric species in each habitat. There was no effect of humidity on light response over the short term duration of exposure to desiccating environments. A hypothesis is presented to account for this phenomenon. |
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