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Proc Biol Sci

Title:		Evolution of basal metabolic rate in bank voles from a multidirectional selection experiment
Author(s):		Sadowska ET; Stawski C; Rudolf A; Dheyongera G; Chrzascik KM; Baliga-Klimczyk K; Koteja P;
Address:		"Institute of Environmental Sciences, Jagiellonian University, ul. Gronostajowa 7, Krakow 30-387, Poland. Institute of Environmental Sciences, Jagiellonian University, ul. Gronostajowa 7, Krakow 30-387, Poland pawel.koteja@uj.edu.pl"
Journal Title:		Proc Biol Sci
Year:		2015
Volume:		282
Issue:		1806
Page Number:		20150025 -
DOI:		10.1098/rspb.2015.0025
ISSN/ISBN:		1471-2954 (Electronic) 0962-8452 (Print) 0962-8452 (Linking)
Abstract:		"A major theme in evolutionary and ecological physiology of terrestrial vertebrates encompasses the factors underlying the evolution of endothermy in birds and mammals and interspecific variation of basal metabolic rate (BMR). Here, we applied the experimental evolution approach and compared BMR in lines of a wild rodent, the bank vole (Myodes glareolus), selected for 11 generations for: high swim-induced aerobic metabolism (A), ability to maintain body mass on a low-quality herbivorous diet (H) and intensity of predatory behaviour towards crickets (P). Four replicate lines were maintained for each of the selection directions and an unselected control (C). In comparison to C lines, A lines achieved a 49% higher maximum rate of oxygen consumption during swimming, H lines lost 1.3 g less mass in the test with low-quality diet and P lines attacked crickets five times more frequently. BMR was significantly higher in A lines than in C or H lines (60.8, 56.6 and 54.4 ml O2 h(-1), respectively), and the values were intermediate in P lines (59.0 ml O2 h(-1)). Results of the selection experiment provide support for the hypothesis of a positive association between BMR and aerobic exercise performance, but not for the association of adaptation to herbivorous diet with either a high or low BMR"
Keywords:		"Animals Arvicolinae/genetics/*physiology *Basal Metabolism *Biological Evolution Diet Feeding Behavior Food Chain Gryllidae Predatory Behavior *Selection, Genetic Swimming aerobic metabolism endothermy experimental evolution food habits;"
Notes:		"MedlineSadowska, Edyta T Stawski, Clare Rudolf, Agata Dheyongera, Geoffrey Chrzascik, Katarzyna M Baliga-Klimczyk, Katarzyna Koteja, Pawel eng Research Support, Non-U.S. Gov't England 2015/04/17 Proc Biol Sci. 2015 May 7; 282(1806):20150025. doi: 10.1098/rspb.2015.0025"