caa a22 4500 445845376 CHVBK 20180317145357.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10709-012-9635-z doi (NATIONALLICENCE)springer-10.1007/s10709-012-9635-z Genetic variation in heat-stress tolerance among South American Drosophila populations [Elektronische Daten] [Lindsey Fallis, Juan Fanara, Theodore Morgan] Spatial or temporal differences in environmental variables, such as temperature, are ubiquitous in nature and impose stress on organisms. This is especially true for organisms that are isothermal with the environment, such as insects. Understanding the means by which insects respond to temperature and how they will react to novel changes in environmental temperature is important for understanding the adaptive capacity of populations and to predict future trajectories of evolutionary change. The organismal response to heat has been identified as an important environmental variable for insects that can dramatically influence life history characters and geographic range. In the current study we surveyed the amount of variation in heat tolerance among Drosophila melanogaster populations collected at diverse sites along a latitudinal gradient in Argentina (24°-38°S). This is the first study to quantify heat tolerance in South American populations and our work demonstrates that most of the populations surveyed have abundant within-population phenotypic variation, while still exhibiting significant variation among populations. The one exception was the most heat tolerant population that comes from a climate exhibiting the warmest annual mean temperature. All together our results suggest there is abundant genetic variation for heat-tolerance phenotypes within and among natural populations of Drosophila and this variation has likely been shaped by environmental temperature. Springer Science+Business Media B.V., 2012 Heat survival nationallicence Thermotolerance nationallicence Temperature stress resistance nationallicence Fallis Lindsey The Division of Biology, The Ecological Genomics Institute, Kansas State University, 116 Ackert Hall, 66506, Manhattan, KS, USA aut Fanara Juan Departamento de Ecología, Genética y Evolución, FCEN UBAI, Buenos Aires, Argentina aut Morgan Theodore The Division of Biology, The Ecological Genomics Institute, Kansas State University, 116 Ackert Hall, 66506, Manhattan, KS, USA aut Genetica Springer Netherlands 139/10(2011-10-01), 1331-1337 0016-6707 139:10<1331 2011 139 10709 https://doi.org/10.1007/s10709-012-9635-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10709-012-9635-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fallis Lindsey The Division of Biology, The Ecological Genomics Institute, Kansas State University, 116 Ackert Hall, 66506, Manhattan, KS, USA aut NATIONALLICENCE 700 1- Fanara Juan Departamento de Ecología, Genética y Evolución, FCEN UBAI, Buenos Aires, Argentina aut NATIONALLICENCE 700 1- Morgan Theodore The Division of Biology, The Ecological Genomics Institute, Kansas State University, 116 Ackert Hall, 66506, Manhattan, KS, USA aut NATIONALLICENCE 773 0- Genetica Springer Netherlands 139/10(2011-10-01), 1331-1337 0016-6707 139:10<1331 2011 139 10709 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer