..., and that hotter acclimated flies did not perform better at higher test temperatures, the ‘beneficial acclimation’ hypothesis can also be ruled out. Thus, these results provide support for the CIB acclimation hypothesis, but this is only partial support because performance improved at only the lower test...

... showed complete compensation in terms of their burst locomotor performance, as the burst speed of acclimated fish was similar in all temperature treatments and was always higher than that of unacclimated fish. Indeed, our findings for guppies adhered to the beneficial acclimation hypothesis ( Leroi et al...

... perspective. * Author for correspondence (e-mail: [email protected] ) 26 1 2006 © The Company of Biologists Limited 2006 2006 intra-specific variation metabolic rate phenotypic plasticity water balance beneficial acclimation hypothesis climatic stress resistance tsetse fly...